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Found results for
patents
1.
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METHODS AND APPARATUS FOR DROPLET DEPOSITION
Application Number |
GB2023051248 |
Publication Number |
2023/222999 |
Status |
In Force |
Filing Date |
2023-05-12 |
Publication Date |
2023-11-23 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
Gouch, Martin
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Abstract
The present invention relates to methods and apparatus for depositing droplets of fluid onto a medium, particularly in the field of printing. The apparatus 10 comprises an array of chambers 12, each of which can be actuated to release a droplet of fluid (an active firing chamber), actuated without depositing a droplet of fluid (an active non-firing chamber), or not actuated at all (an inactive non-firing chamber) in a given actuation cycle. The methods described include considering the history of deposition in the system and the impact thereof on a given chamber. Based on this assessment, that chamber is allocated to one of the three categories to address problems associated with non-uniform droplet deposition.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
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2.
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METHODS AND APPARATUS FOR DROPLET DEPOSITION
Application Number |
GB2023050682 |
Publication Number |
2023/180713 |
Status |
In Force |
Filing Date |
2023-03-20 |
Publication Date |
2023-09-28 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Trip, Renzo
- Jackson, Nicholas Marc
- Voit, Wolfgang
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Abstract
The present invention relates to methods and apparatus for depositing droplets of fluid onto a medium, particularly in the field printing. The apparatus (10) comprises an array of chambers including a first plurality of chambers (12) arranged to selectively deposit droplets of fluid and a second plurality of chambers (13) not configured for selective deposition of droplets of fluid. The plurality of first chambers (12) are arranged in pairs separated from adjacent pairs by at least one chamber (13) of the second plurality of chambers. Each chamber is separated from adjacent chambers by walls (14), the walls (14) being actuable to eject droplets of fluid from the chambers (12).
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J 2/14 - Structure thereof
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3.
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METHODS AND APPARATUS FOR DROPLET DEPOSITION
Application Number |
GB2023050621 |
Publication Number |
2023/175333 |
Status |
In Force |
Filing Date |
2023-03-16 |
Publication Date |
2023-09-21 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Trip, Renzo
- Jackson, Nicholas Marc
- Voit, Wolfgang
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Abstract
A method is provided for depositing droplets of fluid onto a medium utilising a droplet deposition head, the method comprising, for an actuation cycle, the steps of: • receiving input data; • assigning, based on said input data, all the fluid chambers (12) within an array (10) of fluid chambers as either firing chambers or non-firing chambers so as to produce bands of one or more contiguous firing chambers separated by bands of one or more contiguous non-firing chambers; and • actuating the walls (14) of said chambers such that, for each non- firing chamber, if the non-firing chamber is adjacent to a band of firing chambers, on wall is actuated in the first direction while the other wall remains in the neutral position, if the non-firing chamber is a single non-firing chamber between bands of firing chambers, both walls are actuated concurrently in the first direction, and if the non-firing chamber is not adjacent to a band of firing chambers, both walls either remain in the neutral position, or are actuated concurrently in the first direction, or are actuated concurrently in the second direction; and for each firing chamber, each of the first and second walls are actuated consecutively in the first direction. Other methods, a droplet deposition head, a droplet deposition apparatus, and a computer program are also provided.
IPC Classes ?
- B41J 2/14 - Structure thereof
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
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4.
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DISTRIBUTED INK DELIVERY SYSTEM AND METHODS OF USE
Application Number |
GB2022053047 |
Publication Number |
2023/105193 |
Status |
In Force |
Filing Date |
2022-12-01 |
Publication Date |
2023-06-15 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
Trip, Renzo
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Abstract
A recirculating fluid supply system for a plurality of droplet ejection heads (107a, 107b), each having a fluid inlet and fluid outlet; the system comprising: a common supply pump (103) for transferring fluid to each of the plurality of droplet ejection heads; a fluid reservoir (101) fluidically connectable via said common supply pump to said plurality of droplet ejection heads so as to supply fluid via said common supply pump to each of said droplet ejection heads; a sensor manifold (106a, 106b) per droplet ejection head for outputting the pressure in the vicinity of the fluid inlet and in the vicinity of the fluid outlet respectively for each droplet ejection head; and a fluid return pump (113a, 113b) per droplet ejection head having a fluid return connection, fluidically connectable to said droplet ejection head so as to transfer fluid away from said droplet ejection head; wherein each of said fluid return pumps is operable to control the meniscus pressure at said respective droplet ejection head based on the output of its respective sensor manifold. Also provided is a droplet ejection apparatus comprising one or more recirculating fluid supply systems and two or more droplet ejection heads per fluid supply system, wherein at least two of said two or more droplet ejection heads are arranged at different vertical positions; a method of operating said droplet ejection apparatus; and a controller to control said fluid supply system or said droplet ejection apparatus.
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5.
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A NOZZLE PLATE FOR A DROPLET EJECTION HEAD, A DROPLET EJECTION APPARATUS AND A METHOD FOR OPERATING THE SAME
Application Number |
GB2022051598 |
Publication Number |
2022/269258 |
Status |
In Force |
Filing Date |
2022-06-23 |
Publication Date |
2022-12-29 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
Kuban, Lukasz
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Abstract
A nozzle plate for a droplet ejection device; comprising a first, media facing surface and, opposing it, a second, back surface; and at least one nozzle; wherein said at least one nozzle passes through the nozzle plate from the second surface to the first surface; and wherein said at least one nozzle comprises an exit bore having an exit bore centreline and wherein the exit bore centreline is inclined at an oblique inclination angle θ to the first surface and is adapted such that, in use, one or more droplets will be ejected from the nozzle at an acute inclination angle θ to the first surface. A droplet ejection device comprising the nozzle plate. A droplet ejection apparatus comprising at least one droplet ejection device and a deposition media movement apparatus and a method of operating the droplet ejection apparatus.
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6.
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METHODS, APPARATUS AND CONTROLLER FOR A DROPLET EJECTION APPARATUS
Application Number |
GB2021051381 |
Publication Number |
2022/254171 |
Status |
In Force |
Filing Date |
2021-06-03 |
Publication Date |
2022-12-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Massucci, Mario
- Cox, Andrew
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Abstract
A method is provided for providing a drive waveform for a droplet ejection apparatus, the method comprising the steps of: receiving a nominal drive waveform comprising a droplet ejection pulse having a nominal maximum amplitude Vmax(nominal) and for achieving a nominal droplet velocity vel(nominal); and further comprising a nominal non-ejecting pulse ahead of the droplet ejection pulse, wherein the non-ejecting pulse is spaced apart from the droplet ejection pulse by a first delay d1; receiving a target droplet velocity vel(target) and/or a target maximum amplitude of the droplet ejection pulse Vmax(target); adjusting one or more waveform parameters on the basis of the received vel(target) and/or Vmax(target) to provide an adjusted drive waveform to achieve at least one of vel(target) and Vmax(target); and outputting the adjusted drive waveform. A method is also provided for operating a droplet ejection apparatus, the droplet ejection apparatus comprising an actuator element of the droplet ejection apparatus, the actuator element bounding in part a pressure chamber, the pressure chamber being in fluidic communication with a nozzle, the actuator element arranged to deform so as to cause a droplet to be ejected from the nozzle; the method comprising providing an adjusted drive waveform to the actuator element, wherein the adjusted drive waveform comprises a droplet ejection pulse and a non-ejecting pulse arranged ahead of the droplet ejection pulse, wherein the first delay and/or the duration of the non-ejecting pulse is such that the non-ejecting pulse causes a priming pressure in the chamber below that which causes ejection of the droplet and the droplet ejection pulse causes the ejection of the droplet after the droplet ejection pulse further increases the priming pressure in the chamber to a droplet ejection pressure.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
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7.
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ELECTRICAL COMPONENT FOR A MICROELECTROMECHANICAL SYSTEMS DEVICE
Application Number |
GB2022051232 |
Publication Number |
2022/243666 |
Status |
In Force |
Filing Date |
2022-05-17 |
Publication Date |
2022-11-24 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
Vella, Andrew
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Abstract
An electrical component for a microelectromechanical systems device, the electrical component comprising: i) a substrate comprising a first substrate surface and an opposing second substrate surface spaced apart in a thickness direction perpendicular to the first substrate surface; ii) a plurality of electrical elements arranged over the first substrate surface in rows, each row extending in a row direction, wherein each electrical element comprises: a) a first electrode disposed adjacent to the first substrate surface, b) a ceramic member having a first surface disposed in contact with the first electrode and a second surface opposite the first surface, the ceramic member extending in a length direction that is parallel to the first substrate surface and non-parallel to the row direction, and a width direction parallel to the first substrate surface and perpendicular to the length direction; c) a second electrode disposed in contact with the second surface of the ceramic member such that a potential difference may be established between the first and second electrodes and through the ceramic member during operation of the component; d) a passivation layer provided, at least in part, on the second electrode and having vias extending through to the second electrode at opposite ends of the second electrode in the length direction; e) a first electrical trace connecting the first electrode to an external circuit and a second electrical trace connecting the second electrode to the external circuit, wherein each second electrical trace is arranged, at least in part, overlying the respective second electrode and on the passivation layer and each second electrical trace comprises a connecting portion and two electrode connecting points for the respective second electrode, wherein each connecting portion extends in the length direction and is connected to the respective second electrode by said connecting points through said vias of said passivation layer. A microelectromechanical systems device comprising the electrical component. A droplet ejection head comprising the electrical component. A droplet ejection apparatus comprising a droplet ejection head. A method of providing electrical traces to an electrical component for a microelectromechanical systems device.
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8.
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ELECTRICAL ELEMENT
Application Number |
GB2021053317 |
Publication Number |
2022/148945 |
Status |
In Force |
Filing Date |
2021-12-15 |
Publication Date |
2022-07-14 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Mardilovich, Peter
- Sivaramakrishnan, Subramanian
- Ko, Song Won
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Abstract
An improved electrical element (20) is provided, comprising a ceramic member, wherein said ceramic member comprises at least one layer (31) having a depth; and first (41) and second (42) electrode layers disposed adjacent the at least one layer (31) of the ceramic member, such that a potential difference may be established through at least a portion of the ceramic member during operation. The electrical element (20) is arranged adjacent to a flexible membrane (10). The first electrode layer (41) comprises a first group of electrodes (G1(41)) comprising at least two fingers and a second group of electrodes (G2(41 ) ) comprising at least one finger; the fingers of the first and second groups of electrodes (G1(41), G2(41)) are arranged alternately in the first electrode layer (41) in an interdigitation direction. The second electrode layer (42) comprises a first group of electrodes (G1(42)) comprising at least two fingers and a second group of electrodes (G2(42 ) ) comprising at least one finger; the fingers of the first and second groups of electrodes (G1(42), G2(42)) are arranged alternately in the second electrode layer (42) in an interdigitation direction. For each group of electrodes (G1, G2) all the fingers in said group are electrically connected to each other and to a group electrical contact. The fingers of the first group of electrodes of the first electrode layer (Gl(41)) at least partially overlap in the interdigitation direction with the corresponding fingers of the first group of electrodes of the second electrode layer (G1(42 ) ); and the fingers of the second group of electrodes of the first electrode layer (G2(41)) at least partially overlap in the interdigitation direction with the corresponding fingers of the second group of electrodes of the second electrode layer (G2(42)). The group electrical contacts are arranged to be addressable to establish a potential difference between the fingers of the first (G1) and second (G2) groups of electrodes of the same electrode layer (41, 42) in the interdigitation direction and deformation of the ceramic member in d33 mode, and to be addressable to establish a potential difference in the depth direction between said at least partially overlapping fingers of the first and second groups of electrodes (G1, G2) of the first and second electrode layers (41, 42) and deformation of the ceramic member in d31 mode. Drive signals, suitable for driving said electrical element (20), switching circuits, controllers, and methods of driving the electrical element (2) are also provided.
IPC Classes ?
- H01L 41/047 - Electrodes
- H01L 41/04 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof - Details of piezo-electric or electrostrictive elements
- H01L 41/09 - Piezo-electric or electrostrictive elements with electrical input and mechanical output
- H01L 41/113 - Piezo-electric or electrostrictive elements with mechanical input and electrical output
- B41J 2/14 - Structure thereof
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9.
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DROPLET DEPOSITION APPARATUS AND METHODS FOR DETERMINING MISALIGNMENT THEREOF
Application Number |
GB2021051014 |
Publication Number |
2021/219989 |
Status |
In Force |
Filing Date |
2021-04-27 |
Publication Date |
2021-11-04 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Morgan, Alan
- Garcia Maza, Jesus
- Gallon, Kevin
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Abstract
A droplet deposition apparatus (1) comprising: a first head module (101A, 101B, 102A) and a second head module (101B, 102A, 102B) arranged in at least partially overlapping relationship, each head module having a plurality of nozzles in at least one nozzle array (A1, B1); and a storage (200) configured to store a table of determined best aligned nozzle pairs in an overlap region and corresponding skew angles (Θi) of at least one of the head modules relative to a datum of the droplet deposition apparatus and/or a corresponding positional offset of the second head module relative to the first head module; wherein, in the overlap region, nozzles of the first head module are arranged at a first nozzle pitch (P2) and nozzles of the second head module are arranged at a second nozzle pitch (P3). Associated methods in respect of determining misalignment information in respect of such a droplet deposition apparatus, and determining one or more best aligned nozzle pairs in an overlap region between at least two head modules, are also provided.
IPC Classes ?
- B41J 25/00 - Actions or mechanisms not otherwise provided for
- B41J 2/21 - Ink jet for multi-colour printing
- B41J 29/393 - Devices for controlling or analysing the entire machine
- B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
- B41J 15/04 - Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B41J 2/155 - Arrangement thereof for line printing
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10.
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AN ACTUATOR COMPONENT FOR A DROPLET EJECTION HEAD AND METHOD FOR MANUFACTURING THE SAME
Application Number |
GB2021051012 |
Publication Number |
2021/219987 |
Status |
In Force |
Filing Date |
2021-04-27 |
Publication Date |
2021-11-04 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Walsh, Michael
- Ristea, Alin
- Brook, Colin
- Caie, James
- Boltryk, Peter
- Jackson, Nicholas
- Tatum, John
- Watson, Michael
- Burton, Edward
- Arnold, James
- Mccormick, Ryan
- Barker, Jonathan
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Abstract
An actuator component for a droplet ejection head; wherein said actuator component comprises a substrate and one or more strips of piezoelectric material fixedly attached to said substrate; wherein said one or more strips of piezoelectric material comprise one or more layers of piezoelectric material, and an array of fluid chambers defined within said one or more strips of piezoelectric material and extending in an array direction; wherein said actuator component further comprises one or more cover parts; wherein the or each cover part extends in said array direction and is fixedly attached to at least one of a side face of one of said strips of piezoelectric material and/or at least a portion of said substrate; and wherein said one or more cover parts comprise a plurality of openings so as to enable fluid to be supplied to selected ones of said fluid chambers through said openings. Associated methods of manufacturing an actuator component for a droplet ejection head are also provided.
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11.
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PREDICTIVE INK DELIVERY SYSTEM AND METHODS OF USE
Application Number |
GB2020052473 |
Publication Number |
2021/069885 |
Status |
In Force |
Filing Date |
2020-10-07 |
Publication Date |
2021-04-15 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Condie, Angus
- Speed, David
- Trip, Renzo
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Abstract
A sub-controller (20), controller (30), fluid supply system and apparatus for printing and a method for printing. Provided is a processor controlled sub-controller (20) for controlling the fluid pressure in one or more droplet ejection heads (60); wherein said controller (30) is configured to receive a droplet ejection head movement profile for each of said one or more droplet ejection heads (60), determine a respective induced fluid pressure profile at one or more predetermined locations for each of said one or more droplet ejection heads (60) using the respective droplet ejection head movement profile; and generate respective pressure correction data for each of said one or more droplet ejection heads based on the respective induced fluid pressure profile and a predetermined pressure window to be maintained at said one or more droplet ejection heads (60). Also provided is a method of printing using one or more droplet ejection heads (60) fluidically connected to a fluid supply system wherein said method comprises the steps of receiving droplet ejection head movement profile(s); determining a respective induced fluid pressure profile at one or more predetermined locations for each of said one or more droplet ejection heads using the respective droplet ejection head movement profile(s); generating respective pressure correction file(s) at said one or more predetermined locations based on said induced fluid pressure profile(s) and said predetermined pressure window.
IPC Classes ?
- B41J 3/407 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J 2/175 - Ink supply systems
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12.
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NOZZLE ARRANGEMENTS FOR DROPLET EJECTION DEVICES
Application Number |
GB2020051840 |
Publication Number |
2021/023975 |
Status |
In Force |
Filing Date |
2020-07-31 |
Publication Date |
2021-02-11 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Cruz-Uribe, Tony
- Kuban, Lukasz
- Boltryk, Peter
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Abstract
A nozzle plate for a droplet ejection head, the nozzle plate comprising a first row of nozzles arranged to deposit droplets onto a deposition media; wherein the first row of nozzles extends in a row direction and comprises two or more nozzle clusters, each nozzle cluster being arranged along the row direction for a cluster length c, and extending along a cluster depth direction perpendicular to the row direction by a cluster depth d; wherein each nozzle cluster comprises a plurality of nozzles of which one or more nozzles within each nozzle cluster define the cluster length c and two or more nozzles within each nozzle cluster define the cluster depth d; wherein each nozzle cluster is spaced apart from an adjacent nozzle cluster along the row direction by a cluster spacing a such that an air flow path is created for forced air to pass through the row of nozzles in a controlled manner; and wherein, when the first row is projected in a transverse direction onto the row direction, a transition region between adjacent nozzle clusters comprises two or more nozzles from a first cluster and two or more nozzles from a second cluster, the second cluster being adjacent to the first cluster, and the nozzles in the transition region being equidistantly spaced from one another by a projected nozzle spacing.
IPC Classes ?
- B41J 2/145 - Arrangement thereof
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
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13.
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PIEZOELECTRIC DROPLET DEPOSITION APPARATUS OPTIMISED FOR HIGH VISCOSITY FLUIDS, AND METHODS AND CONTROL SYSTEM THEREFOR
Application Number |
GB2020051234 |
Publication Number |
2020/234592 |
Status |
In Force |
Filing Date |
2020-05-20 |
Publication Date |
2020-11-26 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Jackson, Nicholas Marc
- Condie, Angus
- Voit, Wolfgang
- Cox, Andrew
- Reddish, Michael
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Abstract
A droplet deposition apparatus comprising a droplet deposition head, a fluid supply and a controller, wherein: the droplet deposition head comprises one or more fluid chambers each having a nozzle, a fluid inlet path having a fluid inlet into the head, and ending in the one or more nozzles, and a fluid return path starting at the one or more nozzles and ending in a fluid return of the head; each fluid chamber comprises two opposing chamber walls comprising piezoelectric material and deformable upon application of an electric drive signal so as to eject a fluid droplet from the nozzle; the fluid supply is configured to supply a fluid to the fluid inlet at a differential pressure as measured between the fluid inlet and the fluid return; and the controller is configured to apply a drive signal to the piezoelectric chamber walls such that the nozzle or nozzles deposit droplets of a fluid having a viscosity in the range from 45 mPa∙s to 130 mPa∙s at a jetting temperature between 20°C and 90°C, and wherein the differential pressure applied by the fluid supply causes a fluid return flow into the fluid return at a rate of between 50 ml/min and 200 ml/min. A method of operating the droplet deposition apparatus, and a control system for carrying out the method, are also provided.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J 2/14 - Structure thereof
- C09D 11/00 - Inks
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14.
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METHOD OF PREPARING A SOLID SOLUTION CERAMIC MATERIAL HAVING INCREASED ELECTROMECHANICAL STRAIN, AND CERAMIC MATERIALS OBTAINABLE THEREFROM
Application Number |
GB2020051251 |
Publication Number |
2020/234606 |
Status |
In Force |
Filing Date |
2020-05-22 |
Publication Date |
2020-11-26 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Cann, David
- Gibbons, Brady
- Mardilovich, Peter
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Abstract
max,r, maxr, maxr, max, maxr, max,r,r, of the solid solution.
IPC Classes ?
- C04B 35/462 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates
- C04B 35/475 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on bismuth titanates
- C04B 35/626 - Preparing or treating the powders individually or as batches
- C04B 35/634 - Polymers
- C04B 35/638 - Removal thereof
- C04B 35/64 - Burning or sintering processes
- H01L 41/187 - Ceramic compositions
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15.
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METHODS, APPARATUS AND CONTROL SYSTEMS FOR DROPLET DEPOSITION APPARATUS
Application Number |
GB2020050937 |
Publication Number |
2020/208369 |
Status |
In Force |
Filing Date |
2020-04-09 |
Publication Date |
2020-10-15 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Garcia Maza, Jesus
- Heather, Nigel
- Cerny, Tomas
- Boltryk, Peter
- Massucci, Mario
|
Abstract
A method for reducing nozzle meniscus instability of a droplet deposition apparatus, the method comprising the steps of: (a) receiving a first data block for a first line pixel and a second data block for a second line pixel; (b) receiving a data set of forbidden pixel periods that cause harmonic/subharmonic excitation of the meniscus surface and lead to meniscus instability; (c) determining a first jitter delay value based on the data set of forbidden pixel periods; (d) generating first print data based on the first data block, wherein the first print data comprises data defining a first holding period, determined by the first jitter delay value, and one or more drive pulses; and (e) generating second print data based on the second data block, wherein the second print data comprises data defining one or more drive pulses, the time between each first of the one or more drive pulses defined by the first and second print data determining a first pixel period; wherein the first and second print data are for generating first and second actuating element signals for controlling at least one actuating element of the droplet deposition apparatus according to the first and second print data; such that each drive pulse causes the actuating element to eject at least one droplet from a respective nozzle of the droplet deposition apparatus; and the first jitter delay value adjusts the first pixel period to fall outside of the data set of forbidden pixel periods so as to reduce the occurrence of nozzle meniscus instability.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
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16.
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ELECTRICAL COMPONENT
Application Number |
GB2019053249 |
Publication Number |
2020/099891 |
Status |
In Force |
Filing Date |
2019-11-15 |
Publication Date |
2020-05-22 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Vella, Andrew
- Mardilovich, Peter
|
Abstract
The present invention relates to an electrical component for a microelectromechanical systems (MEMS) device, in particular, but not limited to, an electromechanical actuator. In one aspect, the present invention provides an insulated electrical component for a microelectromechanical systems device comprising: i) a substrate layer comprising first and second sides spaced apart in a thickness direction; ii) one or more electrical elements arranged over the first side of the substrate layer, wherein each of the one or more electrical elements comprises: a) a ceramic member; and b) first and second electrodes disposed adjacent the ceramic member such that a potential difference may be established between the first and second electrodes and through the ceramic member during operation; iii) a continuous insulating layer, or laminate of insulating layers, arranged to overlie each of the one or more electrical elements arranged on the first side of the substrate layer; and iv) a passivation layer, or laminate of multiple passivation layers, disposed adjacent to, and at least partially overlying, each of the one or more electrical elements so as to provide electrical passivation between the first and second electrodes of each of the one or more electrical elements; wherein: a) the passivation layer, or at least an innermost layer of the laminate of multiple passivation layers which is disposed adjacent each of the one or more underlying electrical elements, is discontinuous; and/or b) the laminate of multiple passivation layers is recessed at a side which faces away from each of the underlying electrical elements, wherein a recess is provided in a region overlying each of the one or more electrical elements, such that the laminate of passivation layers is thinner in a thickness direction across the recess compared to other non-recessed regions of the laminate of passivation layers.
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17.
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ELECTRICAL COMPONENT
Application Number |
GB2019053250 |
Publication Number |
2020/099892 |
Status |
In Force |
Filing Date |
2019-11-15 |
Publication Date |
2020-05-22 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Vella, Andrew
- Mardilovich, Peter
|
Abstract
The present invention relates to an electrical component for a microelectromechanical systems (MEMS) device, in particular, but not limited to, an electromechanical actuator. In one aspect, the present invention provides an electrical component for a microelectromechanical systems device comprising: i) a substrate layer; ii) a plurality of adjacent electrical elements arranged over the substrate layer, where each electrical element is separated from a neighbouring electrical element by an intermediate region, each of the plurality of electrical elements comprising: a) a ceramic member; and b)first and second electrodes disposed adjacent the ceramic member such that a potential difference may be established between the first and second electrodes and through the ceramic member during operation; iii) a passivation layer, or a laminate of multiple passivation layers, at least partially overlying each of the plurality of electrical elements so as to provide electrical passivation between the first and second electrodes of each of the plurality of electrical elements; wherein the passivation layer, or at least an innermost layer of the laminate of passivation layers which is disposed adjacent each underlying electrical element, is discontinuous over at least one intermediate region between neighbouring electrical elements of the electrical component.
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18.
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ELECTRICAL COMPONENT COMPRISING A LEAD-FREE THIN FILM CERAMIC MEMBER AND AN ALUMINA BARRIER LAYER
Application Number |
GB2019052212 |
Publication Number |
2020/030907 |
Status |
In Force |
Filing Date |
2019-08-07 |
Publication Date |
2020-02-13 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mardilovich, Peter
- Gibbons, Brady
- Ko, Song Won
|
Abstract
The present invention relates to an electrical componentfor a MEMS device, in particular, but not limited to, an electromechanical actuator. It may find particularly beneficial application as an actuator element for a droplet deposition head. In one aspect, the present inventionprovides anelectrical component comprising: i)a substrate layer; ii)at least one electrical element; and iii)at least one barrier layer comprising amorphous alumina, said at least one barrier layer arranged over at least a portion of the substrate layerso as to separate the substrate layer from the at least one electrical element; wherein each of the at least one electrical element comprises: a)a lead-free thin film ceramic member formed of a lead-free ceramic material having a major proportion of a perovskite phase; and b)first and second electrodes disposed adjacent the lead-free thin film ceramic member such that a potential difference may be established between the first and second electrodes, through the lead-free thin film ceramic member during operation; and wherein the electrical component is configured so that the lead-free thin film ceramic member of each of the at least one electrical element is disposed adjacent to the barrier layer over one or more regions.
IPC Classes ?
- H01L 41/08 - Piezo-electric or electrostrictive elements
- H01L 41/187 - Ceramic compositions
- H01L 27/08 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind
|
19.
|
DROPLET EJECTION HEAD, MANIFOLD COMPONENT THEREFOR, AND DESIGN METHOD
Application Number |
GB2019052106 |
Publication Number |
2020/021284 |
Status |
In Force |
Filing Date |
2019-07-26 |
Publication Date |
2020-01-30 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Degraeve, Sebastien Roger Gabriel
- Brook, Colin
|
Abstract
A manifold component for a droplet ejection head, the manifold component comprising: a mount for receiving an actuator component that provides one or more rows of fluid chambers, each chamber being provided with a respective at least one actuating element and a respective at least one nozzle, the at least one actuating element for each chamber being actuable to eject a droplet of fluid in an ejection direction through the corresponding at least one nozzle, each row extending in a row direction; a manifold chamber, which extends from a first end to a second end, and widens from said first end to said second end, the second end providing fluidic connection, in parallel, to at least a group of chambers within said one or more rows and being located adjacent said mount; and at least one port, each port opening into the manifold chamber at the first end thereof; wherein at least one portion between the first end and second end of the manifold chamber is shaped as a hyperbolic acoustic horn.
|
20.
|
DROPLET EJECTION HEAD AND MANIFOLD COMPONENT THEREFOR
Application Number |
GB2019052107 |
Publication Number |
2020/021285 |
Status |
In Force |
Filing Date |
2019-07-26 |
Publication Date |
2020-01-30 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Degraeve, Sebastien Roger Gabriel
- Neal, Gareth Paul
|
Abstract
A manifold component for a droplet ejection head, the manifold component comprising: a mount for receiving at least one actuator component that provides one or more rows of fluid chambers, each chamber being provided with at least one respective actuating element and at least one respective nozzle, each at least one actuating element being actuable to eject a droplet of fluid in said ejection direction through the corresponding at least one of said nozzles, each row extending in a row direction; an inlet manifold chamber, which extends from a first end to a second end, the second end providing fluidic connection, in parallel, to at least a group of chambers within said one or more rows of fluid chambers and being located adjacent said mount; at least one inlet port, each inlet port opening into the inlet manifold chamber at the first end thereof;and a plurality of fluid guides disposed within the inlet manifold chamber, each fluid guide extending from a respective first end to a respective second end, the first ends of at least some of said fluid guides being located adjacent the first end of the inlet manifold chamber, and the second ends of at least some of said fluid guides being located adjacent the second end of the inlet manifold chamber; wherein the fluid guides diverge as they progress from the first end towards the second end of the inlet manifold chamber, the fluid guides thereby causing fluid flowing from the first end to the second end of the inlet manifold chamber to be distributed over the width, in the row direction, of the second end thereof.
|
21.
|
AN ELECTRICAL ELEMENT COMPRISING A MULTILAYER THIN FILM CERAMIC MEMBER, AN ELECTRICAL COMPONENT COMPRISING THE SAME, AND USES THEREOF
Application Number |
GB2019051255 |
Publication Number |
2019/215436 |
Status |
In Force |
Filing Date |
2019-05-07 |
Publication Date |
2019-11-14 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mardilovich, Peter
- Ko, Song Won
- Trolier-Mckinstry, Susan
- Fragkiadakis, Charalampos
- Zhu, Wanlin
|
Abstract
33) phase, said thin film ceramic member having a first side and an opposing second side spaced apart in a thickness direction; ii) first and second electrodes disposed adjacent to the thin film ceramic member, wherein, relative to each other, one of the first or second electrodes is a higher potential electrode and the other one of the first and second electrodes is a lower potential electrode, such that a potential difference may be established between the first and second electrodes and through the thin film ceramic member during operation; wherein the thin film ceramic member comprises: a first layer of ceramic material doped with: I) one or more transition metal ions capable of Jahn-Teller distortion of the perovskite crystal structure of the ceramic material and/or II) one or more non-transition metal ions which have a lower oxidation state and/or one or more transition metal ions which preferentially undergo reduction, compared to the B-site cation of the perovskite crystal structure of the ceramic material; and a second layer of ceramic material not doped with any of the one or more metal ions as defined for the first layer of ceramic material; and wherein said first layer of ceramic material is located, over the thickness of the thin film ceramic member, so as to be: a) in contact with both of the first and second electrodes, wherein the first and second electrodes are both disposed adjacent to one of the first or second sides of the thin film ceramic member; or b) in contact with the one of the first or second electrodes which is the lower potential electrode, wherein first and second electrodes are interposed by the thin film ceramic member.
|
22.
|
METHOD FOR POLING PIEZOELECTRIC ACTUATOR ELEMENTS
Application Number |
GB2019050267 |
Publication Number |
2019/150115 |
Status |
In Force |
Filing Date |
2019-01-31 |
Publication Date |
2019-08-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Fragkiadakis, Charalampos
- Mardilovich, Peter
- Trolier-Mckinstry, Susan
|
Abstract
A method of poling piezoelectric elements of an actuator comprises applying an electric pulse heating waveform to the piezoelectric element(s) in order to increase the temperature thereof to a poling temperature (S202), applying an electric field poling waveform to the piezoelectric element(s) for a poling time period (S203), and apply an electric field holding poling waveform to the piezoelectric element(s) to maintain poling whilst the temperature of the actuator decreases (S204).
IPC Classes ?
- H01L 41/257 - Treating devices or parts thereof to modify a piezo-electric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
- H01L 41/09 - Piezo-electric or electrostrictive elements with electrical input and mechanical output
- B41J 2/16 - Production of nozzles
|
23.
|
DROPLET EJECTION APPARATUS
Application Number |
GB2019050229 |
Publication Number |
2019/150085 |
Status |
In Force |
Filing Date |
2019-01-28 |
Publication Date |
2019-08-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Islam, Mujahid-Ul
|
Abstract
CDWONCDWON ON : has a start time that is concurrent with one of said plurality of pulses of the common drive waveform; and/or has an end time that is concurrent with a different one of said plurality of pulses of the common drive waveform.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
24.
|
A METHOD FOR FABRICATING A LEAD-FREE THIN FILM ELEMENT AND USES THEREOF
Application Number |
GB2018053699 |
Publication Number |
2019/141961 |
Status |
In Force |
Filing Date |
2018-12-19 |
Publication Date |
2019-07-25 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Gibbons, Brady
- Grove, Kyle
- Cann, David
- Ko, Song-Won
|
Abstract
11221212122) ≥ 0; said method comprising: performing steps i) and ii) below one or more times: i) depositing a precursor solution for the ceramic material of formula (I) on to the substrate by chemical solution deposition to form a deposited precursor solution on the substrate; ii) drying and pyrolysing the deposited precursor solution to form a coating; followed by performing step iii) below: iii) crystallising the coating by rapid thermal processing to form a film of the solid solution ceramic material of formula (I); wherein crystallising in step iii) involves heating the coating to a crystallisation temperature of from 600 °C to 800 °C; and wherein the temperature is increased at a ramp rate of from 70 to 150 °C/s up to the crystallisation temperature.
IPC Classes ?
- H01L 41/318 - Applying piezo-electric or electrostrictive parts or bodies onto an electrical element or another base by depositing piezo-electric or electrostrictive layers, e.g. aerosol or screen printing by liquid phase deposition by sol-gel deposition
- C23C 18/12 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
|
25.
|
METHOD, APPARATUS AND CIRCUITRY FOR DROPLET EJECTION
Application Number |
GB2018052722 |
Publication Number |
2019/058143 |
Status |
In Force |
Filing Date |
2018-09-25 |
Publication Date |
2019-03-28 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Jackson, Nicholas Marc
- Cox, Andrew
- Reddish, Michael
|
Abstract
A droplet ejection apparatus comprising: a droplet deposition head comprising an array of actuating elements and a corresponding array of nozzles; actuating circuitry, configured to apply drive waveforms to said actuating elements, thereby causing the ejection of fluid in the form of droplets through said array of nozzles onto deposition media,which are moved relative to the head; and head controller circuitry, configured to: receive an input set of ejection data; generate a series of sub-sets of ejection data based on the input set; and send said series of sub-sets of ejection data to said actuating circuitry; wherein the actuating circuitry is further configured so as to, for each sub-set of ejection data, apply drive waveforms to said actuating elements such that they repeatedly eject droplets from one or more nozzles, thus depositing successive rows of droplets, the one or more nozzles and the sizes of the droplets ejected therefrom being determined by the current sub-set of ejection data, each of the one or more nozzles ejecting droplets with a substantially constant frequency of 1/T; wherein the apparatus is configured to receive deposition media speed data, which indicates the current speed of relative movement of the head with respect to the deposition media; and wherein the apparatus is configured such that the head switches from ejecting droplets in accordance with a current sub-set of ejection data to ejecting droplets in accordance with a consecutive sub-set of ejection data in the series at a time determined in accordance with said media speed data, with the time interval between starting ejecting droplets in accordance with successive sub-sets of ejection data varying inversely with the current speed of relative movement of the head.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
26.
|
A METHOD FOR THE MANUFACTURE OF A MEMS DEVICE
Application Number |
GB2018052566 |
Publication Number |
2019/048888 |
Status |
In Force |
Filing Date |
2018-09-10 |
Publication Date |
2019-03-14 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Scott, Bruce
|
Abstract
A method for the manufacture of a microelectromechanical systems (MEMS) device comprising bonded components which together define a chamber in the device, which method comprises forming a bonding material layer on a surface of a first component, patterning the bonding material layer and, optionally,the first component and bonding a second component to the patterned bonding material layer and first component.The forming of the bonding material layer comprises partially curing a curable material and the bonding of the second component to the patterned bonding material layer and the first component comprises fully curing the partially cured material.
|
27.
|
DROPLET DEPOSITION HEAD AND ACTUATOR COMPONENT THEREFOR
Application Number |
GB2018052576 |
Publication Number |
2019/048891 |
Status |
In Force |
Filing Date |
2018-09-11 |
Publication Date |
2019-03-14 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mardilovich, Peter
- Mcmullen, Robert Errol
- Sivaramakrishnan, Subramanian
|
Abstract
An actuator component for a droplet deposition head, comprising: a plurality of fluid chambers, each fluid chamber being provided with a respective nozzle and a respective piezoelectric actuating element, which is actuableto cause the ejection of fluid from the chamber in question through the corresponding one of the nozzles by deforming a membrane, which bounds, in part, the chamber in question; wherein each piezoelectric actuating element comprises: a piezoelectric member having a top side and an opposing bottom side, the bottom side being nearest to the membrane, the top and bottom sides being spaced apart in a thickness direction; a lower electrode, disposed adjacent said bottom side of the piezoelectric member; an upper electrode, disposed adjacent said top side of the piezoelectric member; wherein each upper electrode comprises: a first layer, which is formed of a first conductive material; a second layer, which is formed of a second conductive material, the first layer being disposed between the second layer and piezoelectric member; wherein at least a portion of the first layer overlies the piezoelectric member when viewed from the thickness direction, this overlying portion of the first layer extending over substantially the whole of the top side of the piezoelectric member and having a length in a length direction, which is a direction perpendicular to the thickness direction in which the extent of the first layer overlying portion is at or near a maximum; wherein at least a portion of the second layer overlies both the first layer and the piezoelectric member when viewed from said thickness direction, this overlying portion of the second layer being formed as a pattern that is shaped so as to accommodate flexing of the piezoelectric actuating element when it is actuated; wherein, as viewed from the thickness direction, the area of the second layer overlying portion is substantially less than half that of the first layer overlying portion; wherein the projection of the second layer overlying portion onto said length of the first layer overlying portion covers at least a majority of said length of the first layer overlying portion.
|
28.
|
METHOD AND APPARATUS FOR DROPLET DEPOSITION
Application Number |
GB2018051537 |
Publication Number |
2018/224821 |
Status |
In Force |
Filing Date |
2018-06-06 |
Publication Date |
2018-12-13 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Jackson, Nicholas, Marc
- Condie, Angus
|
Abstract
A method for depositing droplets onto a medium, utilising a droplet deposition head is provided. The head used in the method includes: an array of fluid chambers separated by interspersed walls, each fluid chamber communicating with an aperture for the release of fluid droplets and each wall separating two neighbouring chambers. Each wall is actuable such that, in response to a first voltage, it will deform so as to decrease the volume of one chamber and increase the volume of the other chamber, and, in response to a second voltage, it will deform so as to cause the opposite effect on the volumes of its neighbouring chambers. The method includes the steps of: receiving input data; assigning, based on such input data, all the chambers within the array as either firing chambers or non-firing chambers, so as to produce bands of one or more contiguous firing chambers separated by bands of one or more contiguous non-firing chambers; actuating the walls of certain of the chambers such that: for each non-firing chamber, either one wall is stationary while the other is moved, or the walls move with the same sense, or they remain stationary; and, for each firing chamber the walls move with opposing senses; such actuations result in each firing chamber releasing at least one droplet, the resulting droplets forming bodies of fluid disposed on a line on the medium, such bodies of fluid being separated on the line by respective gaps for each of the bands of non-firing chambers, the size of each such gap generally corresponding in size to the respective band of non-firing chambers. The actuations of the walls of said firing chambers in the actuating step are such that, if only one of the two walls of each firing chamber were actuated in such manner, no droplets would be ejected from that firing chamber. A droplet deposition apparatus, a droplet deposition head and a computer program product are also provided.
IPC Classes ?
- B41J 2/14 - Structure thereof
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
29.
|
CERAMIC
Application Number |
GB2018051269 |
Publication Number |
2018/206969 |
Status |
In Force |
Filing Date |
2018-05-10 |
Publication Date |
2018-11-15 |
Owner |
- XAAR TECHNOLOGY LIMITED (United Kingdom)
- IONIX ADVANCED TECHNOLOGIES LTD (United Kingdom)
|
Inventor |
- Watson, Michael
- Condie, Angus
- Comyn, Timothy Paul
- Bell, Andrew
|
Abstract
There is disclosed a piezoelectric ceramic having the composition: a[PbTiO3]- b[SrTiO3] - c[BiFeO3] - d[(KxBi1-x)TiO3]; wherein 0.4 < x < 0.6; 0.1 < a < 0.4; 0.01 < b≤ 0.2; c≥ 0.05; d≥ 0.01; and a + b +c + d =1 optionally comprising an A- or B-site metal dopant in an amount of up to 2 at.%.
IPC Classes ?
- C04B 35/26 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on ferrites
- C04B 35/462 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates
- C04B 35/475 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on bismuth titanates
- H01L 41/43 - Inorganic materials by sintering
- H01L 41/00 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof
- H01L 41/187 - Ceramic compositions
- C04B 35/626 - Preparing or treating the powders individually or as batches
- B41J 2/14 - Structure thereof
- C04B 35/64 - Burning or sintering processes
- C04B 35/645 - Pressure sintering
|
30.
|
METHODS OF IDENTIFYING A CERAMIC MATERIAL EXHIBITING AN ELECTRIC FIELD INDUCED STRAIN DERIVED FROM A REVERSIBLE PHASE TRANSITION, METHODS OF PREPARATION AND CERAMIC MATERIALS OBTAINABLE THEREFROM
Application Number |
GB2018050306 |
Publication Number |
2018/142151 |
Status |
In Force |
Filing Date |
2018-02-02 |
Publication Date |
2018-08-09 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Cann, David
- Gibbons, Brady
- Mardilovich, Peter
|
Abstract
The present invention relates to a method for identifying a solid solution ceramic material of a plurality of perovskite compounds which exhibits an electric field induced strain derived from a reversible phase transition, as well as a method for making such ceramic materials and ceramic materials obtainable therefrom. In particular, the present invention is directed to a method of identifying a solid solution ceramic material of at least three perovskite compounds which exhibits an electric field induced strain derived from a reversible phase transition; said method comprising the steps of: i) determining a molar ratio of at least one tetragonal perovskite compound to at least one non-tetragonal perovskite compound which, when combined to form a solid solution, provides a ceramic material comprising a major portion of a tetragonal phase having an axial ratio c/a of greater than 1.005 to 1.04; and ii) determining a molar ratio of at least one additional non-tetragonal perovskite compound to the combination of perovskite compounds from step i) at the determined molar ratio which, when combined to form a solid solution, provides a ceramic material comprising a major portion of a pseudo-cubic phase having an axial ratio c/a of from 0.995 to 1.005 and/or a rhombohedral angle of 90 ± 0.5 degrees.
IPC Classes ?
- C04B 35/475 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on bismuth titanates
- H01L 41/187 - Ceramic compositions
- C04B 35/462 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates
- C04B 35/465 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
|
31.
|
CERAMIC MATERIAL COMPRISING A PSEUDO-CUBIC PHASE, A PROCESS FOR PREPARING AND USES OF THE SAME
Application Number |
GB2018050307 |
Publication Number |
2018/142152 |
Status |
In Force |
Filing Date |
2018-02-02 |
Publication Date |
2018-08-09 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Cann, David
- Gibbons, Brady
- Mardilovich, Peter
|
Abstract
The present invention relates to a bismuth-based solid solution ceramic material, as well as a process for preparing the ceramic material and uses thereof, particularly in an actuator component employed, for example, in a droplet deposition apparatus. In particular, the present invention relates to a ceramic material having a general chemical formula (I): (I): x(Bi0.5Na0.5)Ti03-y(Bi0.5K0.5)Ti03-z1SrHf03-z2SrZr03, wherein x+y+Ζ1+Ζ2 = 1; y, (z1+ z2)≠ 0; x ≥ 0. In embodiments, the present invention also relates to a ceramic material having a general chemical formula (II): x(Bi0.5Nao.5)Ti03-y(Bi0.5K0.5)Ti03-ZiSrHf03-z2SrZr03, wherein x+y+z-i+z2 = 1; x, y, fa + z2)≠ 0; as well as a ceramic material of general formula (III): y(Bi0.5K0.5)Ti03-z1SrHf03-z2SrZr03, wherein y+z1,+z2 = 1; y, (z1 + z2)≠ 0.
IPC Classes ?
- C04B 35/46 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates
- C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
- C04B 35/475 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on bismuth titanates
- C04B 35/49 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates containing also titanium oxide or titanates
- H01L 41/43 - Inorganic materials by sintering
- H01L 41/00 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof
- H01L 41/187 - Ceramic compositions
- H01L 41/25 - Assembling devices that include piezo-electric or electrostrictive parts
- C04B 35/626 - Preparing or treating the powders individually or as batches
- C04B 35/634 - Polymers
- C04B 35/64 - Burning or sintering processes
- C01G 23/00 - Compounds of titanium
|
32.
|
DROPLET DEPOSITION HEAD
Application Number |
GB2016053104 |
Publication Number |
2018/065744 |
Status |
In Force |
Filing Date |
2016-10-05 |
Publication Date |
2018-04-12 |
Owner |
- XAAR TECHNOLOGY LIMITED (United Kingdom)
- MCMULLEN, Robert Errol (United Kingdom)
|
Inventor |
- Brunahl, Jürgen
- Boltryk, Peter
- Kanaris, Athanasios
|
Abstract
A droplet deposition head, such as an inkjet printhead, that includes: an actuator component made up of a plurality of patterned layers, with each layer extending in a plane having a normal in a layering direction and the layers being stacked one upon another in the layering direction. A row of fluid chambers is formed within the plurality of layers, with the fluid chamber row extending in a row direction, which is substantially perpendicular to the layering direction. Each fluid chamber is provided with a respective nozzle and a respective actuating element, which is actuable to cause the ejection of fluid from the chamber in question through the corresponding one of the nozzles. A row of inlet passageways is also formed within the layers of the actuator component, with the inlet passageway row extending in the row direction. Each inlet passageway extends from a first end, where it receives fluid, to a second end, which is fluidically connected to a respective one of the fluid chambers so as to supply fluid thereto. A row of outlet passageways is also formed within the layers of the actuator component, with the outlet passageway row extending in the row direction. Each outlet passageway extends from a first end, which is fluidically connected to a respective one of the fluid chambers so as receive fluid therefrom, to a second end, to which it conveys fluid. THe actuator component further includes a number of conductive traces that extend in a plane having a normal in the layering direction and that are provided on one of the layers of the actuator component. The conductive traces provide at least part of the electrical connection between the actuating elements and drive circuitry. The droplet deposition head further includes one or more manifold components, in which there is provided an inlet manifold chamber and an outlet manifold chamber. The inlet manifold chamber extends from a first end, at which it receives fluid, to a second end, which is fluidically connected in parallel to substantially all of the inlet passageways in the row so as to supply fluid thereto and, thereby, to the row of fluid chambers. The outlet manifold chamber extends from a first end, which is fluidically connected in parallel to substantially all of the outlet passageways in the row so as to receive fluid therefrom and thereby from the row of fluid chambers, to a second end, to which it conveys fluid. Substantially all of the inlet and outlet passageways cross the plane in which the conductive traces extend, passing between the conductive traces.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J 2/14 - Structure thereof
|
33.
|
DROPLET DEPOSITION HEAD AND ACTUATOR COMPONENT THEREFOR
Application Number |
GB2016053103 |
Publication Number |
2018/051051 |
Status |
In Force |
Filing Date |
2016-10-05 |
Publication Date |
2018-03-22 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mcmullen, Robert Errol
- Mardilovich, Peter
- Boltryk, Peter
|
Abstract
actuator component for a droplet deposition head made up of a number of patterned layers, each layer extending in a plane normal to a layering direction, with the layers being stacked one upon another in said layering direction. A row of fluid chambers is formed within the layers, with the row extending in a row direction, which is substantially perpendicular to the layering direction. Each fluid chamber is provided with a respective nozzle and a respective actuating element, which is actuable to cause the ejection of fluid from the chamber in question through the corresponding one of the nozzles. A row of inlet passageways is also formed within the layers of the actuator component, with the row extending in the row direction. Each inlet passageway is fluidically connected so as to supply fluid to a respective one of said fluid chambers. In some embodiments, either a row of outlet passageways or a second row of inlet passageways is additionally formed within the layers; in either case, such row extends in the row direction. Where outlet passageways are present, each is fluidically connected so as to receive fluid from a respective one of said fluid chambers. At least one of the rows of passageways is staggered, whereby at least some of the members of the staggered row in question are offset from their neighbours in an offset direction for the staggered row in question that is perpendicular to the row direction. The row of fluid chambers may also be staggered.
IPC Classes ?
- B41J 2/14 - Structure thereof
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
34.
|
AN ACTUATOR COMPONENT
Application Number |
GB2016052440 |
Publication Number |
2018/025003 |
Status |
In Force |
Filing Date |
2016-08-05 |
Publication Date |
2018-02-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Reyero, Juan
- Garcia Maza, Jesus
|
Abstract
Broadly speaking, embodiments of the present techniques provide apparatus and methods to minimise or reduce the effects of actuator component (and therefore, nozzle array) misalignment. In particular, the present techniques provide an actuator component comprising at least one array of nozzles. In the or each array, the nozzles of the array are arranged in at least two portions: a first portion in which the nozzles in a row of the array are separated by a constant nozzle pitch, and a second portion in the nozzles in a row of the array are separated by a variable nozzle pitch.
|
35.
|
DROPLET DEPOSITION APPARATUS AND TEST CIRCUIT THEREFOR
Application Number |
GB2017051911 |
Publication Number |
2018/002634 |
Status |
In Force |
Filing Date |
2017-06-29 |
Publication Date |
2018-01-04 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Bird, Neil Christopher
- Islam, Mujahid-Ul
|
Abstract
A test circuit to determine the capacitance of an actuator element in an actuator element array, wherein the test circuit comprises: a controller; a source to generate test inputs; measurement circuitry to measure one or more test values on a test path between the test circuit and the actuator element;wherein the controller is configured to, for a test period: control a first switch associated with the actuator element to connect the actuator element to the test path; control the source to generate a first test input; and determine a total capacitance of the actuator element from a first test value generated in response to the first test input; and determine the capacitance of the actuator element (CACT) from the total capacitance (CPAR + CACT).
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
36.
|
DROPLET DEPOSITION HEAD AND METHOD OF PROVIDING ADJUSTMENT DATA THEREFOR
Application Number |
GB2017051929 |
Publication Number |
2018/002651 |
Status |
In Force |
Filing Date |
2017-06-30 |
Publication Date |
2018-01-04 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Cruz-Uribe, Tony
- Sivaramakrishnan, Subramanian
- Dorrestijn, Marko, Raymond, Paul
|
Abstract
Disclosed is a method of providing adjustment data for a droplet deposition head (such as a printhead), or a data processing component therefor. The method makes use of test data, which has been collected by operating the droplet deposition head (or a test droplet deposition head of substantially the same construction, e.g from the same batch), using a set of test waveforms, at a number of frequencies within a test range, and by recording the volume and velocity of the thus-ejected droplets, with these recorded values (volr, velr) being represented within the test data. Each of the set of test waveforms includes a basic drive waveform and a number of adjusted drive waveforms, each of which corresponds to the basic drive waveform, but with a particular waveform parameter adjusted by a corresponding amount. This waveform parameter is a continuous variable, such as pulse width or pulse amplitude. The method further includes, determining adjustment values corresponding to a number of adjustment frequencies, each adjustment vale corresponding to an amount of adjustment for the waveform parameter that, based on the test data, is expected to result in adjusted values for droplet volume and velocity of, respectively, vola and vela, which are substantially equal to targeted values for droplet volume and velocity, volT and velT. The method outputs adjustment data representing such adjustment values and their associated adjustment frequencies, for example in the form of values for a look-up-table. Also disclosed is a droplet deposition apparatus that includes a droplet deposition head with data storage having stored thereon a set of adjustment data. The head uses the adjustment data to actuate its actuator elements with a drive waveform that is based on a basic drive waveform, but with a particular waveform parameter being adjusted by an adjustment value, which is represented by the set of adjustment data and which is determined based on it being associated with the current operating frequency of the actuator element in question. The waveform parameter is again a continuous variable. The adjustment data enable the head to eject droplets at frequencies within an operating range for the head whose values for droplet volume and velocity are substantially equal to targeted values for droplet volume and velocity, volT and velT.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J 29/393 - Devices for controlling or analysing the entire machine
|
37.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2017051906 |
Publication Number |
2018/002630 |
Status |
In Force |
Filing Date |
2017-06-29 |
Publication Date |
2018-01-04 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Massucci, Mario
|
Abstract
A circuit for a droplet deposition apparatus, the circuit configured to generate a drive waveform having a drive pulse, a first non-ejection pulse and a second non-ejection pulse, and wherein the first non-ejection pulse is inverted with respect to the second non-ejection pulse.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
38.
|
POLING OF A PIEZOELECTRIC THIN FILM ELEMENT IN A PREFERRED ELECTRIC FIELD DRIVING DIRECTION
Application Number |
GB2017051926 |
Publication Number |
2018/002648 |
Status |
In Force |
Filing Date |
2017-06-30 |
Publication Date |
2018-01-04 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Hook, Michael
- Marson, Silvia
- Mardilovich, Peter
- Trolier-Mckinstry, Susan
- Fragkiadakis, Charalampos
- Ko, Song-Won
|
Abstract
A piezoelectric thin film element (220) is provided comprising a first electrode (260), a piezoelectric layer (240) formed on said first electrode; and a second electrode (280) formed on said piezoelectric layer; wherein said piezoelectric layer is poled, by applying a poling electric field across said piezoelectric layer from said first electrode to said second electrode, wherein said second electrode is at a lower potential relative to said first electrode, to orient dipoles of said piezoelectric layer in a dipole direction from said first electrode to said second electrode, and wherein said first and second electrodes are configured such that said second electrode is at a lower potential relative to said first electrode when said piezoelectric thin film element is deformed in a deformation direction predominantly opposite to said dipole direction.
IPC Classes ?
- H01L 41/09 - Piezo-electric or electrostrictive elements with electrical input and mechanical output
- B41J 2/14 - Structure thereof
- H01L 41/257 - Treating devices or parts thereof to modify a piezo-electric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
- H01L 41/113 - Piezo-electric or electrostrictive elements with mechanical input and electrical output
|
39.
|
DROPLET DEPOSITION HEAD ALIGNMENT SYSTEM
Application Number |
GB2017051037 |
Publication Number |
2017/182778 |
Status |
In Force |
Filing Date |
2017-04-13 |
Publication Date |
2017-10-26 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Naunton, Ulrik Manfred
- Jeapes, Stephen Mark
- Lewis, Richard Hugh
- Garcia Maza, Jesus
- Gomez, Arturo Garcia
- Dunn, Robert John Charles
|
Abstract
A droplet deposition head including a datum surface arrangement for alignment of the head relative to an external mounting component in either a vertical mounting mode in which the head is held against a vertical mounting plate or a horizontal mounting mode where the head is held against a horizontal mounting plate. The datum surface arrangement comprising at least seven datum surfaces (x1; y1, y2, y3; z1, z2, z3) provided on the head, wherein five of the seven datum surfaces are provided for alignment in both vertical and horizontal mounting modes, and wherein a sixth datum surface (z3) is provided for alignment exclusively in said horizontal mounting mode and a seventh datum surface (y3) is provided for alignment exclusively in said vertical mounting mode.
IPC Classes ?
- B41J 25/34 - Bodily-changeable print heads or carriages
|
40.
|
A DROPLET DEPOSITION APPARATUS AND CONTROLLER THEREFOR
Application Number |
GB2017050882 |
Publication Number |
2017/168149 |
Status |
In Force |
Filing Date |
2017-03-29 |
Publication Date |
2017-10-05 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Lahiri, Anirban
- Jeapes, Stephen Mark
- Islam, Mujahid-Ul
|
Abstract
There is disclosed a controller for controlling two or more groups of nozzles in an array, the controller configured to: encode data blocks into a data stream, wherein each data block denotes how a respective group of nozzles is to be controlled for a droplet period; encode fire codes into the data stream, wherein each fire code is a reserved code that denotes when a respective group of nozzles is to be controlled in accordance with the data block for the droplet period; and wherein the data block precedes the fire code for the respective group of nozzles in the data stream and wherein the fire codes are generated independently of the data blocks.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
41.
|
A PIEZOELECTRIC THIN FILM ELEMENT
Application Number |
GB2017050695 |
Publication Number |
2017/158344 |
Status |
In Force |
Filing Date |
2017-03-14 |
Publication Date |
2017-09-21 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mardilovich, Peter
- Ko, Song-Won
- Trolier-Mckinstry, Susan
- Borman, Trent
- Zhu, Wanlin
|
Abstract
A method for the manufacture of a piezoelectric thin film element comprising a first electrode,a second electrode and one or more piezoelectric thin films there between which method comprises forming a piezoelectric thin film comprising PZT by a chemical solution deposition using three solutions wherein the forming of the PZT thin film comprises forming a bulk PZT thin film layer from the three solutions, wherein each solution has a Zr/Ti content which is different from that of any other solution and at least one solution has an excess lead content greater than that of any other solution, such that the bulk PZT thin film layer has a substantially uniform lead content and Zr/(Zr+Ti) ratio in its thickness direction.
IPC Classes ?
- H01L 41/187 - Ceramic compositions
- H01L 41/318 - Applying piezo-electric or electrostrictive parts or bodies onto an electrical element or another base by depositing piezo-electric or electrostrictive layers, e.g. aerosol or screen printing by liquid phase deposition by sol-gel deposition
|
42.
|
A PIEZOELECTRIC THIN FILM ELEMENT
Application Number |
GB2017050696 |
Publication Number |
2017/158345 |
Status |
In Force |
Filing Date |
2017-03-14 |
Publication Date |
2017-09-21 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mardilovich, Peter
- Ko, Song-Won
- Trolier-Mckinstry, Susan
- Borman, Trent
|
Abstract
A piezoelectric thin film element comprising a first electrode, a second electrode and one or more piezoelectric thin films there between wherein the first electrode is a platinum metal electrode having an average grain size greater than 50 nm and wherein a piezoelectric thin film adjacent the platinum metal electrode comprises a laminate having a plurality of piezoelectric thin film layers wherein a piezoelectric thin film layer contacting the platinum metal electrode comprises lead zirconate titanate (PZT) of composition at or about PbZrxTi1-xO3 where 0 < x ≤ 0.60 and has a degree of pseudo cubic {100} orientation greater than or equal to 90%.
IPC Classes ?
- H01L 41/187 - Ceramic compositions
- H01L 41/318 - Applying piezo-electric or electrostrictive parts or bodies onto an electrical element or another base by depositing piezo-electric or electrostrictive layers, e.g. aerosol or screen printing by liquid phase deposition by sol-gel deposition
- H01L 41/08 - Piezo-electric or electrostrictive elements
|
43.
|
DROPLET DEPOSITION HEAD AND MANIFOLD COMPONENTS THEREFOR
Application Number |
GB2017050596 |
Publication Number |
2017/149330 |
Status |
In Force |
Filing Date |
2017-03-06 |
Publication Date |
2017-09-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Kanaris, Athanasios
- Brook, Colin
- Cameno Salinas, Alfonso
|
Abstract
A droplet deposition head includes: one or more manifold components, providing one or more fluid inlets, each of which is connectable to a fluid supply system so that the head can receive a corresponding droplet fluid; and two or more arrays of fluid chambers, each chamber being provided with a respective actuating element and a respective nozzle, each actuating element being actuable to eject a droplet of fluid in an ejection direction through the corresponding one of the nozzles, each array extending in an array direction. The head extends, in the ejection direction, from a first end, at which the one or more fluid inlets are located, to a second end, at which the arrays of fluid chambers are located. One or more branched inlet paths are provided within the manifold components over a first portion of their height in the ejection direction, each of the branched paths being fluidically connected so as to receive fluid at a main branch thereof from a respective one of the fluid inlets, branching at one or more branching points into two or more sub-branches, and culminating in a plurality of end sub-branches, to which fluid is conveyed. A plurality of widening inlet chambers is provided within the manifold components over a second portion of their height in the ejection direction, the width of each widening inlet chamber in the array direction increasing with distance in the ejection direction from a first end to a second end thereof, the first end being fluidically connected so as to receive fluid from one or more of the branched paths and the second end being fluidically connected so as to supply fluid to one or more of the arrays. Each of the branched inlet paths is fluidically connected so as to supply fluid to two or more of the widening inlet chambers. Also provided are manifold components, which include a plurality of layers, for a droplet deposition head.
|
44.
|
DROPLET DEPOSITION HEAD
Application Number |
GB2016054036 |
Publication Number |
2017/129933 |
Status |
In Force |
Filing Date |
2016-12-22 |
Publication Date |
2017-08-03 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Ko, Song-Won
- Mardilovich, Peter
- Tatum, John Philip
- Cazacu, Alexandru
|
Abstract
A droplet deposition head having a fluid chamber connected to a droplet ejection nozzle and to a reservoir for the fluid, and a piezoelectric actuator element formed at least in part by a fluid chamber wall having an electrode thereon, which element is displaceable in response to a drive voltage to generate a pressure in the chamber to eject a droplet of fluid from the chamber through the nozzle wherein the electrode is provided with a passivation coating which comprises, at least in part, a laminate comprising an inorganic insulating layer nearest to or contacting the electrode and an organic insulating layer overlying the inorganic insulating layer wherein defects in the insulating layers tend to be misaligned at the interface there between and wherein the inorganic insulating layer has thickness less than or equal to 500 nm and the organic insulating layer has a thickness less than 3 μιη.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J 2/16 - Production of nozzles
- B41J 2/14 - Structure thereof
|
45.
|
A PRINTHEAD CIRCUIT
Application Number |
GB2017050050 |
Publication Number |
2017/121999 |
Status |
In Force |
Filing Date |
2017-01-10 |
Publication Date |
2017-07-20 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Van Brocklin, Andrew L.
- Jeapes, Stephen
- Hurst, Ian Anthony
|
Abstract
A print head circuit for providing pulses for driving two or more actuating elements, the circuit comprising a cold switch drive circuit, for driving an actuating element for a first phase of a first pulse, the cold switch drive circuit having a cold drive switch for selectively coupling a drive waveform to the actuating element during the first phase according to a print signal; and a hot switch drive circuit, for driving the actuating element for a second phase of the first pulse, wherein the hot switch drive circuit is configured to drive the actuating element during the second phase according to an actuating element compensation indication signal.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
46.
|
DROPLET DEPOSITION HEAD AND ACTUATOR COMPONENT THEREFOR
Application Number |
GB2016054095 |
Publication Number |
2017/118843 |
Status |
In Force |
Filing Date |
2016-12-30 |
Publication Date |
2017-07-13 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Condie, Angus
- Jackson, Nicholas Marc
- Hubbard, Simon James
|
Abstract
An actuator component for a droplet deposition head that includes: a plurality of fluid chambers arranged side-by-side in an array, with certain of the fluid chambers being firing chambers, each of which is provided with at least one piezoelectric actuating element for causing droplet ejection from a nozzle for that firing chamber; and a plurality of non-actuable walls, each of which is formed of piezoelectric material and bounds at least one of the firing chambers. Each of the piezoelectric actuating elements is provided with at least a first and a second actuation electrode, the first and second actuation electrodes for each piezoelectric actuating element being configured to apply a drive waveform to that piezoelectric actuating element, which is thereby deformed, thus causing droplet ejection. Each of the non-actuable walls is provided with at least a first and a second isolated electrode, the first and second isolated electrodes for each non-actuable wall being electrically isolated so that, when fluid within one of the at least one of said firing chambers bounded by that non-actuable wall applies a force to that non-actuable wall.
|
47.
|
MASKING TECHNIQUE TO REDISTRIBUTE DROPLETS FROM A FAULTY NOZZLE TO NEIGHBOURING NOZZLES
Application Number |
GB2016053933 |
Publication Number |
2017/109461 |
Status |
In Force |
Filing Date |
2016-12-14 |
Publication Date |
2017-06-29 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Reyero, Juan
- Jeapes, Stephen Mark
- Garcia, Jesus
|
Abstract
Broadly speaking, embodiments of the present technique provide apparatus and methods to print an image using masking techniques that control the operation of a droplet deposition head having at least one faulty nozzle. More specifically, an image is analysed to determine a pixel colour density for each pixel of the image. A masking technique is provided which may distribute the droplets (or sub-droplets) that a faulty nozzle is assigned to print among one or more neighbouring, functioning nozzles.
IPC Classes ?
- B41J 2/205 - Ink jet for printing a discrete number of tones
- B41J 2/21 - Ink jet for multi-colour printing
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
48.
|
DROPLET DEPOSITION APPARATUS AND METHODS OF DRIVING THEREOF
Application Number |
GB2016054027 |
Publication Number |
2017/109493 |
Status |
In Force |
Filing Date |
2016-12-21 |
Publication Date |
2017-06-29 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Hurst, Ian
- Bird, Neil
- Jeapes, Stephen
|
Abstract
There is provided a droplet deposition apparatus comprising : control circuitry configured to generate a common drive waveform; storage to store data, wherein the storage comprises a buffer to store scheduled image data relating to one or more pixels; a droplet deposition head having one or more actuator elements configured to be driven in response to drive pulses derived from the common drive waveform; and wherein the common drive waveform comprises a plurality of pixel periods comprising a firing phase and a non-firing phase, each firing phase comprising a firing pulse and each non-firing phase comprising a non-firing pulse, wherein the characteristics of each non-firing pulse are defined in response to the data in storage, and wherein, the firing pulse of a first pixel period is applied as a drive pulse to an actuator element based on the scheduled image data relating to a first pixel, and wherein the non-firing pulse of the first pixel period is applied as a drive pulse to the actuator element based on past image data and/or the stored scheduled image data.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
49.
|
A PIEZOELECTRIC THIN FILM ELEMENT
Application Number |
GB2016051741 |
Publication Number |
2016/198895 |
Status |
In Force |
Filing Date |
2016-06-10 |
Publication Date |
2016-12-15 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mardilovich, Peter
- Trolier-Mckinstry, Susan
- Sivaramakrishnan, Subramanian
|
Abstract
There is disclosed a piezoelectric thin film element (20) comprising a first electrode (22), a second electrode (23) and one or more piezoelectric thin films there between wherein the thin film element has at least two of: • an electrode arrangement in which electrodes are arranged with the one or more piezoelectric thin films so that an electric field applied to a piezoelectric thin film or a portion of a piezoelectric thin film adjacent to the first electrode is lower than an electric field applied to a piezoelectric thin film or a portion of a piezoelectric thin film further from the first electrode when the piezoelectric thin film element actuated; • a piezoelectric thin film adjacent to the first electrode in which a layer of the piezoelectric thin film near to the first electrode has a piezoelectric displacement constant which is lower than that of a layer of the piezoelectric thin film further from the first electrode; and • a piezoelectric thin film adjacent to the first electrode in which a layer of the piezoelectric thin film near to the first electrode has an elastic modulus which is lower than that of a layer of the piezoelectric thin film further from the first electrode.
IPC Classes ?
- H01L 41/04 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof - Details of piezo-electric or electrostrictive elements
- H01L 41/08 - Piezo-electric or electrostrictive elements
- H01L 41/09 - Piezo-electric or electrostrictive elements with electrical input and mechanical output
- B41J 2/14 - Structure thereof
- H01L 41/083 - Piezo-electric or electrostrictive elements having a stacked or multilayer structure
|
50.
|
CIRCUIT FOR DRIVING PRINTER ACTUATING ELEMENTS
Application Number |
GB2016051648 |
Publication Number |
2016/193752 |
Status |
In Force |
Filing Date |
2016-06-03 |
Publication Date |
2016-12-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Jeapes, Stephen Mark
|
Abstract
A circuit for driving first and second groups of actuating elements for ejection of droplets from a printhead, the circuit comprising: a drive circuit configured to provide a drive waveform to first electrodes of the first and second groups; and a voltage offset circuit configured to provide a voltage offset to the second electrodes of the first or second groups to bias the second electrodes of the first and second groups relative to each other.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
51.
|
INKJET PRINTHEAD
Application Number |
GB2016051645 |
Publication Number |
2016/193749 |
Status |
In Force |
Filing Date |
2016-06-03 |
Publication Date |
2016-12-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mcmullen, Robert Errol
- Marchant, James Edward David
- Sivaramakrishnan, Subramanian
|
Abstract
An inkjet printhead comprising a printhead die, the printhead die comprising: a plurality of actuators; a plurality of electrical connections in electrical communication with respective first electrodes of the plurality of actuators for providing drive signals thereto; a first electrical bus arranged in common electrical communication with second electrodes of a first group of the actuators for providing first signals thereto; and a second electrical bus arranged in common electrical communication with second electrodes of a second group of the actuators for providing second signals thereto.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J 2/14 - Structure thereof
|
52.
|
INKJET PRINTHEAD
Application Number |
GB2016050756 |
Publication Number |
2016/156792 |
Status |
In Force |
Filing Date |
2016-03-18 |
Publication Date |
2016-10-06 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mcmullen, Robert Errol
- Mardilovich, Peter
|
Abstract
An inkjet printhead comprising: a fluidic chamber substrate, the fluidic chamber substrate having at least two droplet units provided in an array therein, the droplet units comprising: a fluidic chamber, a first fluidic port provided at a first surface of the fluidic chamber substrate, wherein the first fluidic port is in fluidic communication with the fluidic chamber, a nozzle formed in a nozzle layer provided at a second surface of the fluidic chamber substrate; and a vibration plate provided at the first surface of the fluidic chamber substrate, the vibration plate comprising an actuator for effecting pressure fluctuations within the fluidic chamber; and wherein the droplet units are arranged adjacent each other about an axis extending substantially in a width direction of the droplet units, wherein the first fluidic ports of the droplet units are staggered a first stagger offset distance from each other substantially in a length direction of the droplet units, and wherein a wiring layer extends over the first surface of the fluidic chamber substrate and between the first fluidic ports.
|
53.
|
ACTUATOR DRIVE CIRCUIT WITH TRIM CONTROL OF PULSE SHAPE
Application Number |
GB2016050194 |
Publication Number |
2016/142645 |
Status |
In Force |
Filing Date |
2016-01-29 |
Publication Date |
2016-09-15 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Lahiri, Anirban
- Islam, Mujahid-Ul
- Massucci, Mario
- Hurst, Ian
- Jeapes, Stephen
- Bird, Neil
- Saugey, Anthony
|
Abstract
A drive circuit (100) for driving actuators of a printhead (97) from a common drive waveform has a switching circuit (32) for coupling the common drive waveform to an actuator (1,2), and a timing circuit (10) to control the switching circuit to form a drive pulse from the common drive waveform. The drive pulse is trimmed by controlling a duration (TTRIM) of a step at an intermediate level (VHOLD) in the drive pulse. This can improve the trade-off between available range of trimming and thermal efficiency because the voltage drop across the switching circuit can be reduced, compared to trimming only the height. Decoupling during a flat portion of the common drive waveform can enable the timing of the decoupling to be more relaxed compared to decoupling during a slope. Such relaxing can enable costs, complexity and thermal loading to be reduced.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
54.
|
MULTILAYERED PIEZOELECTRIC THIN FILM ELEMENT
Application Number |
GB2015053312 |
Publication Number |
2016/071688 |
Status |
In Force |
Filing Date |
2015-11-04 |
Publication Date |
2016-05-12 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Mardilovich, Peter
- Trolier-Mckinstry, Susan
|
Abstract
A piezoelectric thin film element having a first electrode, a second electrode and a piezoelectric thin film between the electrodes, wherein the thin film comprises a laminate having two or more piezoelectric thin film layers and wherein a first thin film layer is doped by one or more dopants and a second film layer is doped by one or more dopants and wherein at least one dopant of the second thin film layer is different from the dopant or dopants of the first thin film layer.
IPC Classes ?
- H01L 41/08 - Piezo-electric or electrostrictive elements
- H01L 41/187 - Ceramic compositions
- H01L 41/318 - Applying piezo-electric or electrostrictive parts or bodies onto an electrical element or another base by depositing piezo-electric or electrostrictive layers, e.g. aerosol or screen printing by liquid phase deposition by sol-gel deposition
|
55.
|
PRINTHEAD CIRCUIT WITH TRIMMING
Application Number |
GB2015052610 |
Publication Number |
2016/038367 |
Status |
In Force |
Filing Date |
2015-09-10 |
Publication Date |
2016-03-17 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Van Brocklin, Andrew L
|
Abstract
A printhead circuit for driving at least two actuating elements has a trim generating circuit (10) for generating a trim signal using a comparator (40, 41 ) coupled to receive and compare feedback indicative of a present level of a drive voltage, with a configurable reference voltage value. The trim being based on a drive voltage feedback can give a more direct indication of actuating element output than given by timing references. Hence the trim can be more accurate, can be simpler, without accurate digital timing references, and thus costs can be reduced. It can be combined with a cold switch arrangement.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
56.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2015051940 |
Publication Number |
2016/001679 |
Status |
In Force |
Filing Date |
2015-07-02 |
Publication Date |
2016-01-07 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Hubbard, Simon James
- Gosling, Christopher James
|
Abstract
A droplet deposition apparatus, such as an inkjet printhead, is disclosed. The apparatus includes an array of fluid chambers, where each chamber has a nozzle and a piezoelectric actuator element that causes droplets to be released on-demand from the nozzle in an ejection direction. The array of chambers extends in an array direction, which is perpendicular to the ejection direction. The apparatus also includes a common inlet manifold, which supplies fluid to the array of chambers, and may also include a common outlet manifold, which receives fluid from the array of chambers; both the inlet manifold and, where present, the outlet manifold are elongate in the array direction and extend the length of the array of chambers. The apparatus also includes a flow restrictor passage, which extends the length of the array of chambers in the array direction. This may either: connect the inlet manifold to the array of chambers so that during use fluid can flow along the length of the common inlet manifold, through the flow restrictor passage, then through said array of fluid chambers, and then into and along the length of said common outlet manifold;or, in situations where a common outlet manifold is provided, it may connect the array of chambers to the outlet manifold so that during use fluid can flow along the length of the common inlet manifold, through the array of fluid chambers, then through the first flow restrictor passage, and then into and along the length of the common outlet manifold. When a cross-section taken perpendicular to the array direction is viewed, the flow restrictor, and the manifold to which it is connected, are shaped such that the flow restrictor appears as a narrow, elongate passage linking that manifold to the chambers. The flow restrictor passage presents sufficient impedance to fluid flow such that, in use, fluid within it that is adjacent to the array of chambers is directed generally perpendicular to the array direction for substantially all of the chambers in the array.
|
57.
|
DROPLET DEPOSITION APPARATUS AND METHOD FOR MANUFACTURING THE SAME
Application Number |
GB2014053497 |
Publication Number |
2015/079223 |
Status |
In Force |
Filing Date |
2014-11-25 |
Publication Date |
2015-06-04 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Brook, Colin
- Ristea, Alin
- Walsh, Michael
- Gosling, Chris
|
Abstract
A droplet deposition apparatus, such as an inkjet printhead, that includes an integrally-formed manifold component and one or more actuator components; these actuator components provide an first array of fluid chambers, each of which has a piezoelectric actuator element and a nozzle, with this piezoelectric actuator element being able to cause the release in a deposition direction of fluid droplets through the nozzle in response to electrical signals; the first array of fluid chambers extends in an array direction from a first longitudinal end to a second, opposite longitudinal end, this array direction being perpendicular to the deposition direction; in addition, the manifold component is elongate in the array direction and includes a first and second manifold chambers, with these manifold chambers extending side-by-side in the array direction and the first manifold chamber being fluidically connected to the second manifold chamber via each of the fluid chambers in the first array; the cross-sectional area of at least one of these manifold chambers is tapered with distance in the array direction, for example to improve purging of the chambers during start-up; the cross-sectional shape of the integrally-formed manifold component perpendicular to the array direction varies with distance in the array direction such that the centroid of the cross-section remains a substantially constant distance, in said deposition direction, from said array of fluid chambers over the length of the first array of fluid chambers, with the integrally-formed manifold component thus being essentially self-stiffening.
|
58.
|
A PRINTHEAD ACTUATOR CIRCUIT
Application Number |
GB2014051389 |
Publication Number |
2014/181100 |
Status |
In Force |
Filing Date |
2014-05-06 |
Publication Date |
2014-11-13 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Lahiri, Anirban
- Drury, Paul
- Maza, Jesus Garcia
- Massucci, Mario
- Hook, Michael
|
Abstract
A printhead actuator circuit is provided which is configured to connect any one of a plurality of waveforms from a signal generator to either an output connectable to a printhead actuator. The circuit therefore provides much greater flexibility as each printhead actuator of a printhead may be driven by a different waveform.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
59.
|
DROPLET DEPOSITION APPARATUS AND METHOD FOR DEPOSITING DROPLETS OF FLUID
Application Number |
GB2013052146 |
Publication Number |
2014/023981 |
Status |
In Force |
Filing Date |
2013-08-12 |
Publication Date |
2014-02-13 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul Raymond
- Condie, Angus
- Kanaris, Athanasios
|
Abstract
A droplet ejection apparatus, such as an inkjet printhead, having improved productivity that includes: an array of elongate fluid chambers (2), with each chamber communicating with a nozzle (6), the array extending in an array direction; a common fluid inlet manifold (4); a common fluid outlet manifold (5); and a fluid supply that generates a through-flow of fluid from the common fluid inlet manifold, through each chamber in the array and into the common fluid outlet manifold; the two walls defining each chamber are formed from piezoelectric material so as to effect droplet ejection from the nozzle; this ejection flow occurs simultaneously with the through flow, which may have a larger value than the maximum ejection flow; each nozzle may be elongate parallel to the length of its chamber and/or may have an outlet with an area conferring advantages in terms of productivity and temperature control.
|
60.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2013051857 |
Publication Number |
2014/009743 |
Status |
In Force |
Filing Date |
2013-07-12 |
Publication Date |
2014-01-16 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul
- Lahiri, Anirban
|
Abstract
A droplet deposition apparatus, such as an inkjet printer, that includes one or more servers, which process image data to be printed by a number of droplet deposition modules, such as inkjet printheads; each of the droplet deposition modules is provided with a corresponding controller, with the server(s), the droplet deposition modules and their controllers being connected together by a network, the server(s) thus being able to transfer the image data to the droplet deposition modules via the network; in addition, the controllers for the droplet deposition modules are able to transfer synchronisation data between each other via the network so as to achieve synchronisation of droplet deposition by the modules.
IPC Classes ?
- B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
|
61.
|
DROPLET DEPOSITION APPARATUS AND METHOD FOR MANUFACTURING THE SAME
Application Number |
GB2011051481 |
Publication Number |
2012/017248 |
Status |
In Force |
Filing Date |
2011-08-04 |
Publication Date |
2012-02-09 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Walsh, Michael
- Tatum, John
- Drury, Paul Raymond
|
Abstract
A method of forming a component for a droplet deposition apparatus,includes the steps of: providing a protection material so as to fill fluid chambers and; directing a high-powered laser at the component so as to ablate an array of nozzles communicating with respective filter chambers. The protection material acts to inhibit damage to the walls of the chamber during ablation, such as damage to the interior passivation coating, or electrodes provided on the walls of the chamber, and can be removed for example by flushing with a heated solvent.
|
62.
|
METHOD AND APPARATUS FOR DROPLET DEPOSITION
Application Number |
GB2009051526 |
Publication Number |
2010/055344 |
Status |
In Force |
Filing Date |
2009-11-12 |
Publication Date |
2010-05-20 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul, Raymond
- Bane, Julian, Richard
- Morris, Alison, Diane
|
Abstract
A method for depositing droplets onto a substrate employs an apparatus, such as an inkjet printhead, the apparatus having: an array of channels, acting as fluid chambers,separated by interspersed walls, with each channel communicating with an aperture or nozzle for the release of droplets of a fluid contained within the channel, such as ink. Each of the walls separates two neighbouring channels and is actuable such that, in response to a first voltage, it will deform so as to decrease the volume of one channel and increase the volume of the other channel, and, in response to a second voltage, it will deform so as to cause the opposite effect on the volumes of the neighbouring channels. The method includes the steps of: receiving input data, such as an array of image data pixels; selecting pairs of adjacent channels based on the input data; assigning the selected pairs of adjacent channels as firing channels and the remaining channels as non-firing channels. While the pairs of firing channels may generally have any spacing, one of the pairs of firing channels is spaced apart from another of the pairs of firing channels by an odd number of non-firing channels. Within each of these selected pairs, the separating wall of that pair is actuated so as to cause the release of at least one droplet from each of said firing channels. The actuations for all the pairs overlap in time so as to ensure a high level of throughput or printing speed.
|
63.
|
METHOD AND APPARATUS FOR DROPLET DEPOSITION
Application Number |
GB2009051527 |
Publication Number |
2010/055345 |
Status |
In Force |
Filing Date |
2009-11-12 |
Publication Date |
2010-05-20 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul, Raymond
- Bane, Julian, Richard
- Morris, Alison, Diane
|
Abstract
A method for depositing droplets onto a substrate employs an apparatus, such as an inkjet printhead, the apparatus having: an array of channels, acting as fluid chambers,separated by interspersed walls, with each channel communicating with an aperture or nozzle for the release of droplets of a fluid contained within the channel, such as ink. Each of the walls separates two neighbouring channels and is actuable such that, in response to a first voltage, it will deform so as to decrease the volume of one channel and increase the volume of the other channel, and, in response to a second voltage, it will deform so as to cause the opposite effect on the volumes of the neighbouring channels. The method includes the steps of: receiving input data, such as an array of image data pixels; assigning, based on the input data, all the channels within the array as either firing channels or non-firing channels so as to produce groups of one or more contiguous firing channels separated by groups of one or more contiguous non- firing channels;actuating the walls of certain channels so that, for each non-firing chamber, either the walls move with the same sense or they remain stationary, and, for each firing chamber, either the walls move with opposing senses, or one wall is stationary while the other is moved. These actuations result in each of the firing channels releasing at least one droplet of fluid, the resulting droplets forming dots disposed on a straight line on said substrate,for example so as to form a representation of a line of image data pixels. The dots are separated on the line by gaps corresponding to the non-firing channels.
|
64.
|
METHOD OF PREVENTING THE FORMATION OF INKJET PRINTING ARTEFACTS
Application Number |
EP2007061119 |
Publication Number |
2008/046875 |
Status |
In Force |
Filing Date |
2007-10-17 |
Publication Date |
2008-04-24 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Bane, Julian
|
Abstract
A method for compensating for a tendency for droplets deposited by a plurality of nozzles of an ink jet printer to merge in the direction of printing on a substrate, comprising: identifying lines of pixels to be printed by each nozzle which have a grey level greater than a first threshold value; selecting certain of those pixels which are separated by a distance in the printing direction determined by a probability function and reducing the grey level of those certain pixels below a second threshold value so as to prevent merging of drops in the printing direction.
IPC Classes ?
- B41J 2/21 - Ink jet for multi-colour printing
|
65.
|
PRINTER AND METHOD FOR PRINTING
Application Number |
GB2007003748 |
Publication Number |
2008/040968 |
Status |
In Force |
Filing Date |
2007-10-03 |
Publication Date |
2008-04-10 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Bane, Julian
- Temple, Steve
- Drury, Paul, Raymond
|
Abstract
A method for controlling the printing of overlapping swathes, the swathes extending perpendicular to a succession of print lines; for each print line a transition is defined between one swathe and the next, with the location of the transition in the print line varying between print lines, for example varying pseudo-randomly or as a curve extending in the swathe direction.
IPC Classes ?
- G06K 15/10 - Arrangements for producing a permanent visual presentation of the output data using printers by matrix printers
|
66.
|
METHOD OF FORMING AN ELECTRONIC COMPONENT
Application Number |
GB2006002949 |
Publication Number |
2008/017795 |
Status |
In Force |
Filing Date |
2006-08-08 |
Publication Date |
2008-02-14 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul, Raymond
- Harvey, Robert
|
Abstract
A method of forming a component for use in printed electronics. The method comprises the steps of preparing a plurality of discrete deposition locations (20a, 20b, 20c) on a substrate (2), and depositing first and second components, such as light emitting polymers (24a, 24b), by fluid-processing on the discrete deposition locations. The fluid- processing comprises the steps of : supplying the first component (24a) in a fluid; contacting the fluid containing the first component with the deposition locations, attracting at least a proportion of the first component to a selected deposition location; removing fluid and any unfixed first component; supplying the second component (24b) in a fluid,- contacting the fluid containing the second component with the deposition locations,- attracting at least a proportion of the second component to a selected deposition location, for example by dielectrophoresis; and removing fluid and any unfixed second component.
IPC Classes ?
- H05K 1/16 - Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
- H01L 51/56 - Processes or apparatus specially adapted for the manufacture or treatment of such devices or of parts thereof
- H01L 51/00 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
- H01L 27/32 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes
|
67.
|
DROPLET DEPOSITION COMPONENT
Application Number |
GB2007001567 |
Publication Number |
2007/125345 |
Status |
In Force |
Filing Date |
2007-04-27 |
Publication Date |
2007-11-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Brünahl, Jürgen
|
Abstract
A method of forming a nozzle plate component (30) for a printhead comprising the steps of: providing a laminar body having a polymeric upper layer (11) defining a top surface and a metal lower layer (12) defining a bottom surface; removing material by ablation or photolithography from the polymeric layer to selectively expose the metal layer; and applying etchant from the top surface that selectively etches the exposed areas of the metal layer, thereby undercutting said upper layer to form a recess area 21 in the metal layer and forming an opening through said body (20, 21).
|
68.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2007001228 |
Publication Number |
2007/113554 |
Status |
In Force |
Filing Date |
2007-04-03 |
Publication Date |
2007-10-11 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul, Raymond
- Temple, Stephen
|
Abstract
Droplet deposition apparatus comprising an array of fluid chambers defined by a pair of opposing chamber walls, and in fluid communication with a nozzle for droplet ejection therefrom; a cover member is joined to the edges of the chamber walls and thus seals one side of the chambers. The cover member has a ratio of cover thickness to chamber wall separation less than or equal to 1:1.
|
69.
|
DROPLET DEPOSITION METHOD AND APPARATUS
Application Number |
GB2006004485 |
Publication Number |
2007/063318 |
Status |
In Force |
Filing Date |
2006-11-30 |
Publication Date |
2007-06-07 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Harvey, Robert
|
Abstract
In an ink jet printer in which a selected a number of subdroplet volumes are ejected at a selected series of timings in a packet to form a droplet of the desired size on the substrate, an estimate of droplet placement error is derived and the position of the series of subdroplets in the packet is varied in correction of the droplet placement error.
IPC Classes ?
- B41J 2/205 - Ink jet for printing a discrete number of tones
|
70.
|
METHOD OF PRINTING
Application Number |
GB2006003264 |
Publication Number |
2007/026172 |
Status |
In Force |
Filing Date |
2006-09-04 |
Publication Date |
2007-03-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul, Raymond
- Harvey, Robert
|
Abstract
A method of offset printing wherein a layer of varnish or similar coating material is deposited onto a print drum and an ink image pattern layer is printed upon the varnish layer using a technique such as inkjet printing; the print drum transfers the ink layer onto a print substrate with a portion of the varnish layer thereupon, thus acting as a covering layer for the printed image.
IPC Classes ?
- B41M 1/00 - Inking and printing with a printer's forme
- B41M 5/00 - Duplicating or marking methods; Sheet materials for use therein
|
71.
|
METHOD OF PRINTING
Application Number |
GB2006003269 |
Publication Number |
2007/026174 |
Status |
In Force |
Filing Date |
2006-09-04 |
Publication Date |
2007-03-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul, Raymond
- Harvey, Robert
|
Abstract
A method for printing multiple layer structures, such as printed circuit boards, or flexible substrates: a first print pattern is printed to form a first layer, which is subsequently imaged to measure the displacement vectors of fiducial marks in the first print pattern; the vectors are then applied to the second print pattern to ensure that the second layer is printed in registration with the first layer.
IPC Classes ?
- G03F 9/00 - Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces, e.g. automatically
- H05K 3/12 - Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using printing techniques to apply the conductive material
|
72.
|
DROPLET DEPOSITION METHOD AND APPARATUS
Application Number |
GB2006002544 |
Publication Number |
2007/007074 |
Status |
In Force |
Filing Date |
2006-07-07 |
Publication Date |
2007-01-18 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Drury, Paul, Raymond
|
Abstract
In an ink jet printhead have an elongate ink chamber (3) and a nozzle (5) at one end, a continuous flow of ink is provided through a high impedance channel (33) communicating with the chamber close to the nozzle. Ink is ejected through the nozzle by generating longitudinal acoustic waves in the fluid chamber. A high velocity ink flow into the chamber from the channel sweeps away from the nozzle debris or bubbles that might otherwise block the nozzle.
|
73.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2006002551 |
Publication Number |
2007/007079 |
Status |
In Force |
Filing Date |
2006-07-11 |
Publication Date |
2007-01-18 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Drury, Paul, Raymond
|
Abstract
An inkjet printhead has a first array of actuable side walls (1507) defining channels (1508) , the actuable sidewalls being displaceable to cause a pressure change in selected channels, alternate channels in the array being firing channels; and a second array of parallel side walls (1503) offset in a channel height direction to define channel extension regions (1504) opening to a respective firing channel (1508) . A nozzle (1506) communicates with each channel extension region. The spacing between adjacent side walls in the second array is large to reduce impedance and the spacing between adjacent actuable side walls in the first array is small to provide for efficient actuation.
|
74.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2006001958 |
Publication Number |
2006/129071 |
Status |
In Force |
Filing Date |
2006-05-30 |
Publication Date |
2006-12-07 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Drury, Paul, Raymond
|
Abstract
An ink jet printhead has ink chambers separated by actuable walls, each chamber communicating with a nozzle through which a droplet is ejected when two actuable walls associated with that chamber move in unison to change the volume of that chamber. Even-numbered walls in the array are continuously moving and droplet ejection from a chamber is effected by actuating the odd- numbered wall associated with that chamber in unison with the continuously moving wall.
|
75.
|
PASSIVATION OF PRINTHEAD ASSEMBLIES AND COMPONENTS THEREFOR
Application Number |
GB2006001959 |
Publication Number |
2006/129072 |
Status |
In Force |
Filing Date |
2006-05-30 |
Publication Date |
2006-12-07 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Drury, Paul, Raymond
|
Abstract
A printhead assembly comprising the printhead and filters intended for use with the printhead is passivated by passing a gaseous coating such as Parylene through the assembly. In this way dirt particles created during manufacture of the printhead are encapsulated and thus prevented from blocking the nozzles. The printhead assembly is also prevented from interacting physically or chemically with ink flowing through the printhead.
|
76.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2006001961 |
Publication Number |
2006/129074 |
Status |
In Force |
Filing Date |
2006-05-30 |
Publication Date |
2006-12-07 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Temple, Steve
|
Abstract
A component for a printhead is created by forming a PZT wafer (1); forming a region of SU8 photo-resist material (4) on one side of the PZT wafer; sawing in a second side of said planar body, opposite said first side, actuator channels (6) to a depth sufficient to expose an area of the photo-resist material; forming a nozzle (7) through the layer of photo-resist material in the exposed area such that the nozzle is in communication with the actuator channels. The region of photo-resist material may be used to form a nozzle plate using photolithography.
|
77.
|
METHOD OF STERILISATION
Application Number |
GB2006001543 |
Publication Number |
2006/114633 |
Status |
In Force |
Filing Date |
2006-04-27 |
Publication Date |
2006-11-02 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Temple, Steve
|
Abstract
A method of sterilization of a droplet deposition head by introducing into the droplet deposition head a liquid sterilant, and reducing pressure so as to boil the sterilant within the head.
IPC Classes ?
- B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
|
78.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2006000687 |
Publication Number |
2006/090179 |
Status |
In Force |
Filing Date |
2006-02-27 |
Publication Date |
2006-08-31 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Temple, Steve
- Drury, Paul, Raymond
|
Abstract
A component for a drop on demand printhead having three groups of actuators (210, 220, 230, 402, 404, 406) arranged on a surface forming a central group (404) and two end groups (402, 406) . The electrical connections (424a, 424b) for the central group are split, one portion (424a) extending towards one edge of the surface in one direction, and the remaining portion (424b) extending towards an edge in a different direction. Such components can be butted together to form an array of such components providing improved actuator density along the module, and facilitating improved electrical connection.
|
79.
|
PRINTER ARRANGEMENT AND METHOD OF MANUFACTURE
Application Number |
GB2006000422 |
Publication Number |
2006/082445 |
Status |
In Force |
Filing Date |
2006-02-07 |
Publication Date |
2006-08-10 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Marsden, Richard
- Drury, Paul
- Temple, Steve
|
Abstract
A mounting arrangement for mounting a printer component to a support (30), using a foil (60) including a number of mounting apertures (50), into which pins (40) are inserted to provide alignment. The engagement of the pins (40) in the aperture (50) causes local deformation of the foil (60), the resulting forces acting to align the pins (40) to an accuracy which can be greater than that to which the foil (60) is manufactured.
|
80.
|
DROPLET DEPOSITION
Application Number |
GB2005004587 |
Publication Number |
2006/059095 |
Status |
In Force |
Filing Date |
2005-11-30 |
Publication Date |
2006-06-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul, Raymond
- Harvey, Robert, Alan
|
Abstract
A method for depositing fluid from an array of ejection nozzles (206) into physical regions (202) defined in a substrate (204) by effecting relative movement of a printhead (208) and the substrate such that each of said plurality of target regions (202) is addressed by more than one nozzle and ejecting droplets (212) from a plurality of nozzles to form a fluid envelope in each region (202). The positioning perpendicular to the direction of movement (210) of the fluid envelope within said region is controlled by the proportion of fluid ejected from each of said more than one nozzles (206). The positioning of the fluid envelope in an orthogonal direction can be controlled by ejection timings.
IPC Classes ?
- H01L 51/40 - Processes or apparatus specially adapted for the manufacture or treatment of such devices or of parts thereof
- B41J 2/21 - Ink jet for multi-colour printing
|
81.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2005004595 |
Publication Number |
2006/059102 |
Status |
In Force |
Filing Date |
2005-11-30 |
Publication Date |
2006-06-08 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Temple, Steve
- Harvey, Robert, Alan
|
Abstract
Apparatus for applying radial acoustic waves to a body of fluid to cause ejection of micro-drops. Micro-drops differ from conventionally ejected droplets by being substantially smaller than the opening from which they are ejected, and ejection speeds are typically increased also. Such apparatus can advantageously be combined with known actuating arrangements to allow ejection of droplets of two different sizes.
|
82.
|
DROPLET DEPOSITION APPARATUS
Application Number |
GB2005003816 |
Publication Number |
2006/037995 |
Status |
In Force |
Filing Date |
2005-10-04 |
Publication Date |
2006-04-13 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Temple, Steve
- Drury, Paul, Raymond
- Brunahl, Jurgen
|
Abstract
A droplet deposition apparatus including a channel (10) having deformable side walls (14) actuated by a piezoelectric element (18) forming the roof of the channel. The roof is caused to expand or contract in a direction perpendicular to the plane of the walls, and causes the walls to deform into the channel. The walls can act to amplify small deflections of the actuator to cause sufficiently large changes of volume in the channel. The piezoelectric is typically high activity piezoelectric and preferably single crystal ceramic.
|
83.
|
FLUID SUPPLY METHOD AND APPARATUS
Application Number |
GB2005003588 |
Publication Number |
2006/030235 |
Status |
In Force |
Filing Date |
2005-09-19 |
Publication Date |
2006-03-23 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Drury, Paul
- Temple, Stephen
- Purser, Michael
|
Abstract
A method and apparatus for supplying fluid to a deposition device or printhead using the through flow principle. The pressure of fluid entering and exiting the printhead is controlled directly at the printhead by respective pressure controllers, preferably a transducer and control system or a weir. The pressure controllers can be integrated together and mounted on or further integrated with the printhead. The supply system preferably forms a closed loop including a remote reservoir, and the entire system can be arranged such that the overall free surface of fluid is exposed on average to a negative gauge pressure.
IPC Classes ?
- B41J 2/19 - Ink jet characterised by ink handling for removing air bubbles
- B41J 2/20 - Ink jet characterised by ink handling for preventing or detecting contamination of compounds
|
84.
|
PRINTER AND METHOD OF ALIHNING A MODULE IN A PRINTHEAD
Application Number |
GB2005002923 |
Publication Number |
2006/008555 |
Status |
In Force |
Filing Date |
2005-07-25 |
Publication Date |
2006-01-26 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
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Inventor |
- Drury, Paul, Raymond
- Lowe, Robert, Jonathan
- Temple, Steve
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Abstract
A method of manufacture of printers and printheads formed of a number of modules (28) mounted on a chassis (30). The modules (28) and chassis (30) are formed with a number of alignment features (2,2a,2b,10,10a,10b) which engage with one another to form elastic interference couplings. By arranging a number n of such couplings for each module (28), the variance in positional error of each module (28) with respect to the chassis (30) can be made significantly less than the alignment error of the alignment features (2,2a,2b,10,10a,10b) themselves, by the process of Average Elastic Alignment. The elastic interference couplings can advantageously by made to form a sealed coupling for the supply of ink from the chassis (30) to each module (28).
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85.
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DROPLET DEPOSITION APPARATUS
Application Number |
GB2005002746 |
Publication Number |
2006/005952 |
Status |
In Force |
Filing Date |
2005-07-11 |
Publication Date |
2006-01-19 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
- Temple, Stephen
- Drury, Paul, Raymond
|
Abstract
An actuator taking the form of a piezoelectric wall separating two chambers, which utilises two actuation modes. Both actuation modes cause volume displacements in both chambers, but act to reinforce one another in one chamber and cancel one another in the other chamber. A fluid pump for droplet deposition having an array of channels separated by such actuators can be operated with each channel acting substantially independently of its neighbours.
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86.
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DROPLET DEPOSITION APPARATUS AND METHOD OF MANUFACTURE
Application Number |
GB2005002617 |
Publication Number |
2006/003433 |
Status |
In Force |
Filing Date |
2005-07-04 |
Publication Date |
2006-01-12 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Drury, Paul, Raymond
|
Abstract
To increase manufacturing yield, an array of ejection chambers in an lnkjet printer includes at least one redundant ejection chamber. For each ejection chamber, there is a possible nozzle window (14), and these nozzle windows overlap. The ejection chambers (4) are tested prior to nozzle formation to identify any non-functioning chambers, appropriately positioned within the respective nozzle windows to foam uniformly spaced dots on a substrate, with at least one ejection chamber remaining unused.
IPC Classes ?
- B41J 2/145 - Arrangement thereof
- B41J 2/16 - Production of nozzles
- B41J 2/51 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements serial printer type
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87.
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METHOD OF MANUFACTURE OF ELECTRONIC OR FUNCTIONAL DEVICES
Application Number |
GB2005002540 |
Publication Number |
2006/000821 |
Status |
In Force |
Filing Date |
2005-06-29 |
Publication Date |
2006-01-05 |
Owner |
XAAR TECHNOLOGY LIMITED (United Kingdom)
|
Inventor |
Drury, Paul, Raymond
|
Abstract
Plastics or other electronic devices are formed on a flexible substrate using inkjet printing techniques. To avoid registration difficulties arising from distortion of the substrate, deposition is conducted on a rigid substrate to which a release layer is applied. After application of a type layer which serves as the permanent, flexible substrate, the structure is released from the temporary rigid substrate.
IPC Classes ?
- H01L 21/68 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for positioning, orientation or alignment
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