Memjet Technology Ltd.

Ireland

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2024 June 2
2024 (YTD) 2
2023 6
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2021 9
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IPC Class
B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles 19
B41J 2/175 - Ink supply systems 17
B41J 2/21 - Ink jet for multi-colour printing 15
B41J 2/155 - Arrangement thereof for line printing 14
B41J 25/34 - Bodily-changeable print heads or carriages 12
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Found results for  patents

1.

AEROSOL EXTRACTOR FOR INKJET PRINTING SYSTEM

      
Application Number EP2023080170
Publication Number 2024/115022
Status In Force
Filing Date 2023-10-30
Publication Date 2024-06-06
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Lawrence, James
  • Horrocks, Glenn
  • Kuzmin, Sergey

Abstract

An inkjet printing system includes: a printhead (2) positioned over a media feed path; and an aerosol extractor (10) positioned downstream of the printhead relative to a media feed direction. The aerosol extractor includes: an air knife (12) having a knife slot for directing a flow of air towards print media; and a suction nozzle (16) positioned upstream of the knife slot for directing aerosol into a suction channel.

IPC Classes  ?

  • B41J 2/17 - Ink jet characterised by ink handling

2.

COMPACT PRINTING UNIT WITH INTEGRATED AEROSOL EXTRACTION UNIT

      
Application Number EP2023080171
Publication Number 2024/115023
Status In Force
Filing Date 2023-10-30
Publication Date 2024-06-06
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Profaca, Mark
  • Lawrence, James
  • Horrocks, Glenn

Abstract

A printing unit (1) includes: a fixed maintenance chassis (9) having a bottom plate defining a plurality of first slots; print modules (30) having a respective inkjet printheads extending across a media feed path; a lift mechanism for lifting and lowering the print modules relative to the media feed path; and an aerosol extraction unit mounted to an underside of the bottom plate. The aerosol extraction unit includes a plurality of aerosol extractors, which extend across the media feed path between a pair of side bars, the aerosol extractors being spaced apart along the media feed direction to define a corresponding plurality of second slots aligned with the first slots. Each print module is slidably movable through its respective first and second slots towards the media feed path into a printing position.

IPC Classes  ?

  • B41J 2/17 - Ink jet characterised by ink handling
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 2/175 - Ink supply systems
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
  • B41J 25/34 - Bodily-changeable print heads or carriages

3.

INKJET MODULE WITH PRINTHEAD NEST ASSEMBLY

      
Application Number EP2023059058
Publication Number 2023/232325
Status In Force
Filing Date 2023-04-05
Publication Date 2023-12-07
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Burke, David
  • Profaca, Mark

Abstract

An integrated inkjet module includes: a chassis; a printhead carrier mounted to the chassis; and a printhead nest assembly having a nest fastened to the printhead carrier and a replaceable printhead nestably secured within the nest. The printhead nest assembly is detachable from the printhead carrier and the printhead is removable from the nest only when the printhead nest assembly is detached from the printhead carrier.

IPC Classes  ?

  • B41J 2/175 - Ink supply systems
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/17 - Ink jet characterised by ink handling
  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 25/308 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms

4.

TANDEM PRINT MODULES WITH INTERSTITIAL BAR FOR OPTIMIZING AIRFLOW

      
Application Number EP2023059062
Publication Number 2023/232328
Status In Force
Filing Date 2023-04-05
Publication Date 2023-12-07
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Horrocks, Glenn
  • Crichton, Peter
  • Burke, David
  • Tharion, Joseph

Abstract

A printing unit includes: a unit chassis having a pair of side bars interconnected by a pair of end bars; first and second print modules mounted on the unit chassis, each print module having a respective printhead and an associated print zones; an aerosol extractor providing an airflow through the print zones; and an interstitial bar positioned in a space between the 5 printheads. The interstitial bar is configured to modulate the airflow through the print zones.

IPC Classes  ?

  • B41J 2/175 - Ink supply systems
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/17 - Ink jet characterised by ink handling
  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 25/308 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

5.

PRINTING UNIT WITH TANDEM INKJET MODULES

      
Application Number EP2023059059
Publication Number 2023/232326
Status In Force
Filing Date 2023-04-05
Publication Date 2023-12-07
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Burke, David
  • Profaca, Mark
  • Brice, Robert
  • Crichton, Peter

Abstract

A printing unit includes: a unit chassis and a pair of opposed inkjet modules mounted in tandem on the unit chassis in forward and reverse orientations, each inkjet module having one respective printhead and at least one of: a capper and a wiper. Each printhead includes first and second rows of print chips mounted on a unitary surface of a respective ink manifold, the first and second rows of print chips having a plurality of print chips butted end-on-end along a length of the printhead. The printheads are wholly aligned with respect to a media feed direction for printing in four ink colors from the pair of printheads.

IPC Classes  ?

  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 2/175 - Ink supply systems
  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 25/308 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
  • B41J 2/17 - Ink jet characterised by ink handling

6.

PRINTING UNIT WITH PIVOTING OPPOSED INKJET MODULES

      
Application Number EP2023059060
Publication Number 2023/232327
Status In Force
Filing Date 2023-04-05
Publication Date 2023-12-07
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Brice, Robert
  • Burke, David
  • Profaca, Mark

Abstract

A printing unit includes: a unit chassis and a pair of opposed inkjet modules mounted on the unit chassis, each inkjet module having a respective printhead. The inkjet modules are each pivotally mounted on the unit chassis for pivotally moving the inkjet modules towards and away from each other.

IPC Classes  ?

  • B41J 2/175 - Ink supply systems
  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 2/17 - Ink jet characterised by ink handling
  • B41J 25/308 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms

7.

ORIENTATION-AGNOSTIC PRINT MODULE AND MULTIPLE PRINT MODULE ARRAY

      
Application Number EP2022080604
Publication Number 2023/104397
Status In Force
Filing Date 2022-11-02
Publication Date 2023-06-15
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Crichton, Peter
  • Grohn, Edmund James
  • Hogan, Julie
  • Palliser, Ronan

Abstract

An inkjet print module includes: a printhead having first and second rows of print chips, the printhead having 180 degree rotational symmetry about a print axis parallel to a direction of droplet ejection; a cradle for removably receiving the printhead; and control circuitry for distributing data signals to the printhead via first and second data paths of the inkjet print module. The cradle is configurable for receiving the printhead in first and second printhead orientations relative to the print module, the second printhead orientation being rotated 180 degrees about the print axis relative to the first printhead orientation. The control circuitry is configurable to invert distribution of the data signals between the first and second data paths.

IPC Classes  ?

  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 25/308 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms

8.

THREAD-COATING MODULE

      
Application Number EP2022069205
Publication Number 2023/006392
Status In Force
Filing Date 2022-07-08
Publication Date 2023-02-02
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Profaca, Mark

Abstract

A thread-coating module includes: a base plate having a printhead opening; an inkjet printhead received in the printhead opening; and a chamber unit having a mouth for engagement with the base plate and an ink-collection slot opposing the printhead. The chamber unit and the base plate are movable relative to each other for opening and closing a coating chamber comprising the base plate and the chamber unit, with the ink-collection slot being positioned opposite the printhead in the coating chamber.

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
  • D06B 11/00 - Treatment of selected parts of textile materials, e.g. partial dyeing
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 2/17 - Ink jet characterised by ink handling
  • B41J 25/00 - Actions or mechanisms not otherwise provided for
  • D06P 1/00 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed

9.

THERMAL REGULATION IN LONG INKJET PRINTHEAD

      
Application Number EP2022064137
Publication Number 2022/268427
Status In Force
Filing Date 2022-05-25
Publication Date 2022-12-29
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Hudson, Michael
  • Burke, David
  • Chen, Qing
  • Lowe, Graeme
  • Thelander, Jason
  • Munton, Ellaine

Abstract

An inkjet printing system includes: (a) an inkjet printhead having a rigid elongate manifold with first and second parallel ink supply channels extending along a length of the manifold between respective ink ports positioned at opposite ends thereof; and a plurality of printhead chips mounted to a lower surface of the manifold, the ink supply channels supplying ink to the printhead chips via ink outlets defined in the lower surface. One end of the manifold has a first ink inlet port for the first ink supply channel and an ink outlet port for the second ink supply channel. The other end of the manifold has a first ink outlet port for the first ink supply channel and a second ink inlet port for the second ink supply channel. An ink delivery system is configured to flow ink along the first and second channels in opposite directions.

IPC Classes  ?

10.

SYSTEM FOR REMOVING CONDENSATE FROM PRINTHEAD

      
Application Number EP2022062071
Publication Number 2022/248182
Status In Force
Filing Date 2022-05-04
Publication Date 2022-12-01
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Burke, David

Abstract

A printing device (1) includes: an inkjet printhead (5) having a row of ink ejection devices; a lift mechanism configured for raising and lowering the printhead between a maintenance position and a printing position; a conveyor tape (12) positioned below the printhead (5) in the printing position, the conveyor tape (12) defining a slot (19) aligned with the row of ink ejection devices; and a tape movement mechanism (16) for moving the tape longitudinally along the length of the printhead (5). The tape movement mechanism (16) is configured to move the tape (12) along the printhead during printing, thereby conveying condensate accumulated on an underside of the tape (12) away from the printhead (5).

IPC Classes  ?

  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

11.

PRESSURE-REGULATING VALVE WITH DUAL VALVE MEMBERS

      
Application Number EP2022055772
Publication Number 2022/218605
Status In Force
Filing Date 2022-03-07
Publication Date 2022-10-20
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Yourlo, Zhenya
  • Behi, Reza
  • Crichton, Peter
  • Berry, Norman Micheal

Abstract

A pressure regulating valve for an inkjet printhead. The valve includes: a valve inlet connect to a valve outlet; via a flow path; a first orifice positioned in the flow path having a sealable first seat; a movable first valve member configured for sealing engagement with the first seat; a second orifice positioned in the flow path; a movable second valve member configured for regulating a fluid flow rate through the second orifice; a regulator chamber having the valve outlet and comprising a diaphragm operatively connected to the second valve member, such that movement of the diaphragm moves the second valve member relative to the second orifice; and a biasing mechanism for resiliently biasing the diaphragm away from the second orifice.

IPC Classes  ?

  • B41J 2/175 - Ink supply systems
  • G05D 16/16 - Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid

12.

INKJET INKS FOR MINIMIZING GHOSTING ARTEFACTS

      
Application Number EP2022054152
Publication Number 2022/184478
Status In Force
Filing Date 2022-02-18
Publication Date 2022-09-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Prashar, Jognandan

Abstract

An inkjet ink includes: an ink vehicle; a polymer; a surfactant package containing an ethoxylated acetylenic nonionic surfactant having an HLB value in the range of 5 to 10; and an ABA-type bis-alkoxylated silicone compound. The ink has a surface tension in the range of 26 to 31 mN/m.

IPC Classes  ?

  • C09D 11/106 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes

13.

THERMAL BEND ACTUATOR HAVING IMPROVED LIFETIME

      
Application Number EP2021087407
Publication Number 2022/161716
Status In Force
Filing Date 2021-12-22
Publication Date 2022-08-04
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • O'Reilly, Ronan
  • Shnider, Michael
  • Hacket, Darren
  • Donohoe, Brian
  • Reid, Kim
  • Bagnat, Misty
  • Byrne, Owen
  • Barcuk, Alexandra

Abstract

A thermal bend actuator includes: a thermoelastic beam for connection to drive circuitry; and a passive beam mechanically cooperating with the thermoelastic beam, such that when a current is passed through the thermoelastic beam, the thermoelastic beam expands relative to the passive beam resulting in bending of the actuator. The thermoelastic beam wherein the thermoelastic beam is comprised of an aluminium alloy. The aluminium alloy comprises a first metal which is aluminium, a second metal, and at least 0.1 at.% of a third metal selected from the group consisting of: copper, scandium, tungsten, molybdenum, chromium, titanium, silicon and magnesium.

IPC Classes  ?

14.

PRINTHEAD MAINTENANCE SYSTEM

      
Application Number EP2021073433
Publication Number 2022/063510
Status In Force
Filing Date 2021-08-24
Publication Date 2022-03-31
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Yourlo, Zhenya
  • Behi, Reza

Abstract

A printhead maintenance system (1) includes: an elongate inkjet printhead (3) having a nozzle face (8) containing a plurality of inkjet nozzles; a carriage (5) movable longitudinally along the printhead in a cleaning direction, the carriage including a maintenance member (7) having: a fluid bath (20) having a mouth opposing the nozzle face (8) of the printhead, a primary fluid inlet (24) at an upstream end of the fluid bath relative to the cleaning direction and a fluid outlet (26) at a downstream end of the fluid bath relative to the cleaning direction; and a traversing mechanism for traversing the carriage (5) longitudinally along the printhead (3) in the cleaning direction. The maintenance member (7) does not contact inkjet nozzles (8) of the printhead (3), and the fluid bath (20) is configured to provide a greater fluid velocity at the downstream end relative to the upstream end.

IPC Classes  ?

  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

15.

METHOD AND PRINT CHIP FOR SINGLE-PASS MONOCHROME PRINTING AT HIGH SPEEDS

      
Application Number EP2021072548
Publication Number 2022/053257
Status In Force
Filing Date 2021-08-12
Publication Date 2022-03-17
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Hogan, Julie
  • Palliser, Ronan
  • Sheehan, John
  • Brown, Brian
  • Forbes, Caitriona
  • Lehane, Pat

Abstract

A method of printing an image from a printhead module having a plurality of horizontal nozzle rows. Each nozzle row has a main row portion and a corresponding dropped row portion vertically offset from the main row portion. The method includes the steps of: determining a predetermined delay for the dropped row portions based on the offset, a print speed and a print resolution; allocating dot data for image lines to respective nozzle rows based on the print speed and print resolution, sending first dot data for each main row portion and second dot data for each dropped row portion to the printhead module; and firing nozzles from the main row portions and dropped row portion in a predetermined sequence. Each dropped row portion is fired independently of its corresponding main row portion and delayed relative to its corresponding main row portion by the predetermined delay.

IPC Classes  ?

  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/21 - Ink jet for multi-colour printing

16.

RAMPING DOT DATA FOR SINGLE-PASS MONOCHROME PRINTING AT HIGH SPEEDS

      
Application Number EP2021072549
Publication Number 2022/053258
Status In Force
Filing Date 2021-08-12
Publication Date 2022-03-17
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Brown, Brian
  • Hogan, Julie
  • Palliser, Ronan
  • Nazneen, Keshu
  • Le Hir, Juliette
  • Hardy, Rodney

Abstract

A method of printing an image from a printhead module having a plurality of horizontal nozzle rows. The method includes the steps of: allocating first dot data for an image line of the image to nozzles in a main row portion of a first nozzle row; allocating second dot data for the image line to nozzles in a dropped row portion of the first nozzle row; sending the first and second dot data to the printhead module and firing respective droplets. Some bits of the first dot data correspond to pixels of the image line aligned with the dropped row portion, and some bits of the second dot data correspond to pixels of the image line aligned with the main row portion.

IPC Classes  ?

  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/21 - Ink jet for multi-colour printing

17.

INKJET PRINTHEAD HAVING ROBUST ENCAPSULATION OF WIREBONDS

      
Application Number EP2021070190
Publication Number 2022/033814
Status In Force
Filing Date 2021-07-19
Publication Date 2022-02-17
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Perez, Elmer
  • Tan, See-Huat
  • Horrocks, Glenn
  • Hossain, Mohammad
  • Webb, Michael
  • Blanquer, Pascal
  • Coolen, Erik

Abstract

An electronic assembly includes a substrate having a die and PCB mounted thereon. Wirebonds interconnect bond pads of the die with contact pads of the PCB, each wirebond having a first end portion bonded to a respective bond pad, an opposite second end portion bonded to a respective contact pad and an intermediate section extending between the first and second end portions. A dam encapsulant encapsulates each of the first and second end portions, a first fill encapsulant contacts the substrate and the dam encapsulant; and a second fill encapsulant overlies the first fill encapsulant. The first fill encapsulant has a lower modulus of elasticity than the second fill encapsulant and the dam encapsulant.

IPC Classes  ?

18.

METHOD OF EVALUATING PRINTHEAD CONDITION

      
Application Number EP2021055957
Publication Number 2021/204480
Status In Force
Filing Date 2021-03-09
Publication Date 2021-10-14
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Lau, Daniel

Abstract

A method of determining a condition of a printhead (1). The method includes the steps of: (i) printing a test image (10) using the printhead, (ii) optically imaging the test image and determining optical densities along a length of the test image; (iii) converting the optical densities into a single-dimensional signal (18); (iv) analyzing one or more portions of the signal using a convolutional neural network to provide a classification for corresponding portions of the signal; and (v) using each classification to determine the condition of corresponding portions of the printhead..

IPC Classes  ?

  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 29/393 - Devices for controlling or analysing the entire machine
  • H04N 1/60 - Colour correction or control
  • G06T 7/00 - Image analysis
  • G06N 3/00 - Computing arrangements based on biological models
  • G06F 3/12 - Digital output to print unit
  • G06N 3/04 - Architecture, e.g. interconnection topology
  • G06N 3/08 - Learning methods

19.

INK TANK WITH INTEGRATED FILTER

      
Application Number EP2021055823
Publication Number 2021/185621
Status In Force
Filing Date 2021-03-08
Publication Date 2021-09-23
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Tow, Gregory
  • Mcauliffe, Patrick
  • Yourlo, Zhenya

Abstract

An ink tank for an ink delivery system includes: a housing having an ink inlet port and an ink outlet port; an air vent communicating with a headspace of the ink tank; a filter positioned in the housing for filtering ink supplied from the ink tank via the ink outlet port; and a baffle plate positioned in the housing between the ink inlet port and the filter. The baffle plate is configured for directing air bubbles entering the ink tank via the ink inlet port towards the headspace of the ink tank. A baffle opening is positioned towards a base of the ink tank, thereby allowing ink to flow from the ink inlet port towards the ink outlet port via the baffle opening.

IPC Classes  ?

  • B41J 2/175 - Ink supply systems
  • B41J 2/18 - Ink recirculation systems
  • B41J 2/19 - Ink jet characterised by ink handling for removing air bubbles
  • B41J 2/195 - Ink jet characterised by ink handling for monitoring ink quality

20.

METHOD OF DITHERING FOR HIGH-SPEED SINGLE-PASS PRINTING

      
Application Number EP2021055953
Publication Number 2021/185635
Status In Force
Filing Date 2021-03-09
Publication Date 2021-09-23
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Hardy, Rodney
  • Lawrence, James

Abstract

A method of single-pass printing uses a printing system having first and second aligned printheads (2, 4) supplied with a same ink. The method includes the steps of: receiving first and second halftone images at the first and second printheads, respectively; printing the first halftone image from the first printhead (2); and printing the second halftone image from the second printhead (4). The first halftone image is based on a first dither pattern and the second halftone image is based on a second dither pattern, the first dither pattern being different than the second dither pattern.

IPC Classes  ?

  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 2/505 - 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
  • B41J 2/515 - 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 line printer type
  • G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers
  • G06K 15/10 - Arrangements for producing a permanent visual presentation of the output data using printers by matrix printers

21.

LOW-COST INK DELIVERY SYSTEM FOR CONTROLLING INK PRESSURE

      
Application Number EP2021050206
Publication Number 2021/164951
Status In Force
Filing Date 2021-01-07
Publication Date 2021-08-26
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Yourlo, Zhenya
  • Thomas, Andrew

Abstract

An ink delivery system for delivering ink to an inkjet printhead. The system includes a first ink tank, a second ink tank, a main air line having an air inlet and an air outlet; a first air line interconnecting the first ink tank and the main air line; a second air line interconnecting the second ink tank and the main air line; an air pump positioned in the main air line; first and second airflow restrictor positioned in the main air line; an ink circulation line interconnecting the first and second ink tanks; and an ink pump positioned in the ink circulation line for pumping ink from the first ink tank to the second ink tank.

IPC Classes  ?

22.

THREAD COATING USING INKJET PRINTHEAD

      
Application Number EP2021051088
Publication Number 2021/160384
Status In Force
Filing Date 2021-01-19
Publication Date 2021-08-19
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Roetker, Thomas
  • Thelander, Jason
  • Profaca, Mark
  • Hassibi, Payman

Abstract

A method of coating threads using a printhead having rows of nozzles extending along a length of the printhead. The method includes the steps of: feeding the thread along a length of the printhead; and ejecting ink from the rows of nozzles towards the thread. Thread-coating modules and thread-coating systems make use of the method described.

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 2/01 - Ink jet
  • D06P 5/30 - Ink jet printing
  • B41J 2/21 - Ink jet for multi-colour printing
  • D06B 11/00 - Treatment of selected parts of textile materials, e.g. partial dyeing

23.

METHOD AND SYSTEM FOR PRIMING DRY PRINTHEADS

      
Application Number EP2021051089
Publication Number 2021/160385
Status In Force
Filing Date 2021-01-19
Publication Date 2021-08-19
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Yourlo, Zhenya

Abstract

A system for priming a dry inkjet printhead (4). The system includes: the inkjet printhead (4) having an inlet port (8) connected to an upstream ink line and an outlet port (14) connected to a downstream ink line; a pump (40) operably connected to the downstream ink line; a capper (200) engaged with printhead; a vacuum source for applying suction to a capping chamber (202) of the capper (200); and a control system for coordinating actuation of the pump and the vacuum source. In use, the pump (40) is actuated simultaneously with the vacuum source, thereby drawing ink through the printhead (4) from the inlet port to the outlet port and priming the printhead.

IPC Classes  ?

  • B41J 2/17 - Ink jet characterised by ink handling
  • B41J 2/18 - Ink recirculation systems
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

24.

PRINTHEAD MODULE HAVING THROUGH-SLOTS FOR SUPPLYING POWER AND DATA

      
Application Number EP2020073135
Publication Number 2021/047868
Status In Force
Filing Date 2020-08-18
Publication Date 2021-03-18
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Thelander, Jason
  • Burke, David

Abstract

A printhead module includes a monolithic substrate having a plurality of rows of print chips mounted thereon. Each row of print chips receives power and data through a respective longitudinal slot defined through a thickness of the substrate, each longitudinal slot extending parallel with and offset from the rows of print chips.

IPC Classes  ?

  • B41J 2/155 - Arrangement thereof for line printing

25.

MODULAR INKJET PRINTHEAD FOR REDUNDANT PAGEWIDE PRINTING

      
Application Number EP2020073133
Publication Number 2021/047867
Status In Force
Filing Date 2020-08-18
Publication Date 2021-03-18
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Thelander, Jason
  • Burke, David

Abstract

A modular inkjet printhead includes a plurality of printhead modules arranged end on end in a row. Each printhead module includes: a substrate having a plurality of parallel ink supply channels extending longitudinally along a length thereof and a plurality of parallel printhead segments. Each printhead segment extends longitudinally along a length of the substrate and has a plurality of print chips arranged end on end in a row. A plurality of fingers extend longitudinally from opposite ends of each printhead module, each finger including a portion of a respective one of the printhead segments. The fingers of neighboring printhead modules are interdigitated such that printhead segments of neighboring printhead modules overlap.

IPC Classes  ?

  • B41J 2/155 - Arrangement thereof for line printing

26.

MEMS INKJET PRINTHEAD HAVING RECIRCULATING INK PATHWAY

      
Application Number EP2020072067
Publication Number 2021/037510
Status In Force
Filing Date 2020-08-05
Publication Date 2021-03-04
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Hudson, Michael

Abstract

A MEMS printhead including: a plurality of nozzle chambers arranged in a plurality of nozzle rows, each nozzle chamber having: a nozzle opening for ejection of ink, an inlet channel extending parallel with a direction of droplet ejection and an outlet channel extending perpendicular to the inlet channel; an ink delivery channel extending parallel with the nozzle rows, the ink delivery channel supplying ink to a plurality of inlet channels; a plurality of ink collection channels extending across the nozzle rows, each ink collection channel collecting ink from a set of outlet channels; and an ink receiving channel extending parallel with the nozzle rows, the ink receiving channel receiving ink from the ink collection channels.

IPC Classes  ?

27.

PROCESS FOR HANDLING MEMS WAFERS

      
Application Number EP2020063071
Publication Number 2020/244890
Status In Force
Filing Date 2020-05-11
Publication Date 2020-12-10
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Arnal, Nicolas
  • Quimpo, Troy, Pasiola
  • North, Angus

Abstract

A process for handling MEMS wafers includes the steps of: (i) attaching a first carrier substrate to a first side of a MEMS wafer, the first carrier substrate being attached via a first wafer bonding tape and a silicone-free peel tape, the peel tape contacting the first side of the MEMS wafer; (ii) performing wafer processing steps on an opposite second side of the MEMS wafer; (iii) releasing the first carrier substrate from the first side of the MEMS wafer via exposure to an energy source, the energy source selectively releasing the wafer bonding tape from the first side of the MEMS wafer; and (iv) peeling the peel tape away from the first side of the MEMS wafer.

IPC Classes  ?

28.

METHOD OF GENERATING ALIGNMENT DATA FOR PRINTHEADS

      
Application Number EP2019085207
Publication Number 2020/143999
Status In Force
Filing Date 2019-12-13
Publication Date 2020-07-16
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Hoschke, Nigel
  • Hardy, Rodney
  • Parker, Steven

Abstract

A method of generating alignment data for a printhead. The method includes the steps of: printing a calibration pattern using the printhead, the calibration pattern including rows of spaced apart fiducials, each fiducial having a plurality of concentric shapes representing a code sequence; imaging the fiducials at a first resolution to generate imaged fiducials; cross-correlating a template fiducial with the imaged fiducials at a plurality of different displacement s relative to each imaged fiducial, the template fiducial having a configuration matching the imaged fiducials; determining a two-dimensional set of cross-correlation values for each imaged fiducial, each set of cross-correlation values indicating a center of a respective fiducial; and generating alignment data for the printhead using the sets of cross-correlation values.

IPC Classes  ?

  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 29/393 - Devices for controlling or analysing the entire machine

29.

PRINT MODULE HAVING PIVOTABLE PRINTHEAD CARRIER

      
Application Number EP2019074749
Publication Number 2020/069843
Status In Force
Filing Date 2019-09-16
Publication Date 2020-04-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Burke, David
  • Berry, Norman
  • Selvan S/o Anothonysamy, Harrick
  • Pacinio Anciano, Reynovel
  • Keat Fah, Soon
  • Lai Say, Poh

Abstract

A print module includes: a cradle defining a longitudinal cavity and an access opening at a first end of the longitudinal cavity; an elongate printhead carrier positioned in the longitudinal cavity, the printhead carrier being pivotable about a pivot axis at a second end of the cradle opposite the first end; and an elongate printhead longitudinally slidably engaged with the printhead carrier. The printhead is removable from the cradle via pivoting of the printhead carrier and longitudinally sliding the printhead relative to the printhead carrier through the access opening.

IPC Classes  ?

30.

PRINT MODULE WITH TWO-STAGE PCB ENGAGEMENT

      
Application Number EP2019074751
Publication Number 2020/069845
Status In Force
Filing Date 2019-09-16
Publication Date 2020-04-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Burke, David
  • Berry, Norman
  • Selvan S/o Anothonysamy, Harrick
  • Pacinio Anciano, Reynoval
  • Keat Fah, Soon
  • Lai Say, Poh

Abstract

A print module includes: a cradle defining a longitudinal cavity; an elongate printhead received in the longitudinal cavity, the printhead having a row of printhead contacts; a PCB slidably movable relative to the cradle along a first axis perpendicular to a longitudinal axis of the printhead; and an actuator handle. The actuator handle is configured for reciprocally lowering and raising the PCB and urging the PCB contacts into engagement with the printhead contacts, thereby forming electrical connections between the PCB and the printhead. The PCB electrical contacts are urged along a second axis perpendicular to the first axis and the longitudinal axis of the printhead.

IPC Classes  ?

31.

INTEGRATED INKJET MODULE FOR SCALABLE PRINTER

      
Application Number EP2019074752
Publication Number 2020/069846
Status In Force
Filing Date 2019-09-16
Publication Date 2020-04-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Profaca, Mark

Abstract

An integrated inkjet module includes: a support chassis configured for fixedly mounting on a media feed chassis; a maintenance chassis slidably mounted on the support chassis; and a print bar chassis liftably mounted on the maintenance chassis, the print bar chassis having one or more inkjet printheads mounted thereon.

IPC Classes  ?

  • B41J 29/02 - Framework
  • B41J 29/06 - Special supports, platforms, or trolleys for supporting machines on tables
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
  • B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form

32.

PRINTHEAD CRADLE WITH LONGITUDINAL RAIL ENGAGING PRINTHEAD OVERHEAD HANGER

      
Application Number EP2019074750
Publication Number 2020/069844
Status In Force
Filing Date 2019-09-16
Publication Date 2020-04-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Burke, David
  • Berry, Norman
  • Selvan S/o Anothonysamy, Harrick
  • Pacinio Anciano, Reynoval
  • Keat Fah, Soon
  • Lai Say, Poh

Abstract

A print module includes: a cradle defining a longitudinal cavity and an access opening at a first end of the longitudinal cavity; a printhead carrier positioned in the longitudinal cavity, the printhead carrier having a longitudinal rail; and an elongate printhead having a longitudinal overhead hanger for complementary longitudinal sliding engagement with the rail. The printhead is removable from the cradle via longitudinal sliding movement of the printhead relative to the printhead carrier through the access opening.

IPC Classes  ?

33.

PIGMENT-BASED INK FORMULATIONS HAVING IMPROVED PRINTHEAD LIFETIME

      
Application Number EP2019071275
Publication Number 2020/038725
Status In Force
Filing Date 2019-08-08
Publication Date 2020-02-27
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Fielder, Simon
  • Chong, Alison
  • Tyvoll, David
  • Hudson, Tim
  • Davey, Roger
  • Munton, Ellaine

Abstract

An aqueous-based inkjet ink for a thermal inkjet printhead includes: a pigment; 2 to 90 ppm ammonium ions; and an ink vehicle. The ink has a pH in the range of 8 to 9.5 and exhibits improved lifetime in thermal inkjet printheads with minimal loss of print quality.

IPC Classes  ?

  • C09D 11/322 - Pigment inks
  • C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
  • C09D 11/40 - Ink-sets specially adapted for multi-colour inkjet printing

34.

INK ADDITIVES FOR IMPROVING DRY TIME AND PRINTHEAD DEHYDRATION PERFORMANCE

      
Application Number EP2019071276
Publication Number 2020/038726
Status In Force
Filing Date 2019-08-08
Publication Date 2020-02-27
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Prashar, Jognandan

Abstract

An inkjet ink includes: an ink vehicle; a colorant; a diethylene glycol C3-8 alkyl ether; a first surfactant of formula (I); and a second surfactant different than the first surfactant, the first surfactant being present in a greater amount than the second surfactant.

IPC Classes  ?

  • C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes

35.

INKJET PRINTHEAD WITH ENCAPSULANT-RETAINING FEATURES

      
Application Number EP2019059174
Publication Number 2019/211070
Status In Force
Filing Date 2019-04-11
Publication Date 2019-11-07
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Perez, Elmer Dimaculangan
  • North, Angus
  • Lowe, Graeme
  • Tan, See-Huat
  • Barton, Christopher

Abstract

A MEMS chip assembly including: a support structure having a chip mounting surface; a MEMS chip mounted on the chip mounting surface, each MEMS chip having an active surface including one or more MEMS devices and a plurality of bond pads disposed alongside a connection edge of the MEMS chip; electrical connectors connected to the bond pads; and an encapsulant material covering the electrical connectors. The MEMS chip has encapsulant-retaining trenches defined in the active surface extending alongside the connection edge, each encapsulant-retaining trench being disposed between the bond pads and the MEMS devices.

IPC Classes  ?

36.

PROCESS FOR FORMING INKJET NOZZLE CHAMBERS

      
Application Number EP2018081277
Publication Number 2019/101605
Status In Force
Filing Date 2018-11-14
Publication Date 2019-05-31
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • North, Angus
  • Walker, Matthew

Abstract

A process for forming an inkjet chamber over a hole defined in a frontside surface of a wafer substrate. The process includes the steps of: (i) laminating a layer of dry film photoresist onto the frontside surface; (ii) defining wall openings corresponding to chamber walls in the dry film photoresist; (iii) depositing chamber material into the wall openings and over the dry film photoresist so as to form chamber walls and a chamber roof; (iv) defining a nozzle opening in the chamber roof; and (v) removing the dry film photoresist to form the inkjet chamber over the hole.

IPC Classes  ?

37.

MAINTENANCE MODULE ARRANGEMENT FOR MODULAR PRINTER HAVING CURVED MEDIA PATH

      
Application Number EP2018075108
Publication Number 2019/086163
Status In Force
Filing Date 2018-09-17
Publication Date 2019-05-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Profaca, Mark

Abstract

A printer includes: a convexly curved media path for feeding print media along a media feed direction, the curved media path having an apex, a first section upstream of the apex and a second section downstream of the apex; a plurality of printheads radially arranged around the curved media path, the plurality of printheads including a first printhead positioned for printing onto the first section and a second printhead positioned for printing onto the second section; a plurality of cappers for capping the plurality of printheads, each capper being positioned at one longitudinal side of a respective printhead and each capper being laterally moveable between capped and uncapped positions; and a lift mechanism for lifting and lowering the printheads. A first capper is positioned downstream of the first printhead and a second capper is positioned upstream of the second printhead in respective uncapped positions.

IPC Classes  ?

  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
  • B41J 25/34 - Bodily-changeable print heads or carriages

38.

INTEGRATED INKJET MODULE FOR SCALABLE PRINTER

      
Application Number EP2018075109
Publication Number 2019/076560
Status In Force
Filing Date 2018-09-17
Publication Date 2019-04-25
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Profaca, Mark

Abstract

An integrated inkjet module includes: first and second opposite end brackets; a single print module asymmetrically positioned between the end brackets, the print module having an elongate printhead; a wiper carriage positioned between a first end of the print module and the first end bracket, the wiper carriage being configured for longitudinally wiping the printhead; and a print module carrier mounted between the first and second end brackets. The print module includes a mounting arm bridging over the wiper carriage and the print module carrier is slidably liftable relative to the first and second end brackets.

IPC Classes  ?

  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 29/02 - Framework
  • B41J 15/02 - Web rolls or spindles; Attaching webs to cores or spindles
  • B41J 19/00 - Character- or line-spacing mechanisms

39.

PRINT ENGINE FOR COLOR DIGITAL INKJET PRESS

      
Application Number EP2018074353
Publication Number 2019/063275
Status In Force
Filing Date 2018-09-10
Publication Date 2019-04-04
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Profaca, Mark

Abstract

A print engine includes: a media support chassis having a plurality of guide rollers mounted between opposite sidewalls thereof, the plurality of guide rollers defining a media feed path; a maintenance chassis pivotally mounted on the media support chassis, the maintenance chassis including a plurality of maintenance modules fixedly mounted thereto and aligned along the media feed path; and a print bar chassis movably mounted on the maintenance chassis, the print bar chassis including a plurality of print modules, each print module having a printhead; a pivot actuation mechanism for pivoting the maintenance chassis between an open and closed position; and a lift mechanism for raising and lowering the print bar chassis relative to the maintenance chassis between a maintenance position a printing position.

IPC Classes  ?

  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 29/02 - Framework

40.

INK FILTER WITH PASSIVE DE-AERATION

      
Application Number EP2018067853
Publication Number 2019/011705
Status In Force
Filing Date 2018-07-02
Publication Date 2019-01-17
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Mcauliffe, Patrick

Abstract

An ink filter for an ink delivery system. The ink filter includes: a filter chamber having a filter inlet port, a filter outlet port and a vent port, the vent port being positioned in a roof of the filter chamber; a filter material positioned between the filter inlet port and the filter outlet port; and a closed vent chamber connected to the vent port. The vent chamber has wall exposed to atmosphere formed of an air-permeable polymer.

IPC Classes  ?

  • B41J 2/175 - Ink supply systems
  • B41J 2/18 - Ink recirculation systems
  • B41J 2/19 - Ink jet characterised by ink handling for removing air bubbles
  • B41J 2/195 - Ink jet characterised by ink handling for monitoring ink quality

41.

MIST EXTRACTION SYSTEM FOR INKJET PRINTER

      
Application Number EP2018062157
Publication Number 2018/206735
Status In Force
Filing Date 2018-05-09
Publication Date 2018-11-15
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Baterna, Dan
  • Balala, Rommel

Abstract

A printer includes: a platen having an ink-collection slot extending across its width; a wick bar received in the ink-collection slot, wherein an upstream gap and a downstream gap are defined at either side of the wick bar relative to a media feed direction; a printhead positioned over the wick bar; and a vacuum chamber in fluid communication with the ink-collection slot. The wick bar has a wick surface sloped upwards from the upstream gap towards the downstream gap.

IPC Classes  ?

  • B41J 2/17 - Ink jet characterised by ink handling

42.

LOW TOXICITY INK FORMULATIONS WITH IMPROVED PRINTHEAD LIFETIME

      
Application Number EP2018025060
Publication Number 2018/188806
Status In Force
Filing Date 2018-03-12
Publication Date 2018-10-18
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Prashar, Jognandan
  • Blake, Iain
  • Shepard, Michele

Abstract

An Inkjet ink includes; (i) a disazo dye of formula (1); (ii) 1,3-propanediol; (iii) a glycol compound selected from the group consisting of: triethylene glycol and tetraethylene glycol; and (iv) water. The ink has low toxicity and is preferably absent ethylene glycol and sulfolane.

IPC Classes  ?

  • C09D 11/328 - Inkjet printing inks characterised by colouring agents characterised by dyes
  • B41J 2/01 - Ink jet
  • C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes

43.

INK TANK FOR REGULATING INK PRESSURE

      
Application Number EP2018053367
Publication Number 2018/153703
Status In Force
Filing Date 2018-02-09
Publication Date 2018-08-30
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Mcauliffe, Patrick
  • Mallinson, Samuel
  • Mcbain, Geordie

Abstract

An ink tank for an ink delivery system includes: a first ink chamber having an ink inlet port and an ink outlet port; a second ink chamber having a gas port open to atmosphere; and a diffusion tube interconnecting the first and second ink chambers. The first ink chamber has a smaller volume than the second ink chamber and the diffusion tube is configured to minimize diffusion of air from the second chamber to the first chamber.

IPC Classes  ?

  • B41J 2/175 - Ink supply systems
  • B41J 2/19 - Ink jet characterised by ink handling for removing air bubbles

44.

INKJET PRINTHEAD FOR FULL COLOR PAGEWIDE PRINTING

      
Application Number EP2018051365
Publication Number 2018/141564
Status In Force
Filing Date 2018-01-19
Publication Date 2018-08-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Thelander, Jason
  • Burke, David
  • Thomas, Andrew

Abstract

An inkjet printhead includes: a manifold having first, second, third and fourth ink supply channels extending along the manifold and corresponding first, second, third and fourth rows of outlets defined in the manifold, wherein a first ink delivery group contains the first and second rows of outlets and a second ink delivery group contains the third and fourth rows of outlets. A first array of printhead chips is mounted to a lower surface of the manifold so as receive ink from the first and second rows of outlets and a second array of printhead chips is mounted to the lower surface of the manifold so as to receive receive ink from the third and fourth rows of outlets. A distance between the first and second ink delivery groups is greater than a distance between the first and second rows of outlets or the third and fourth rows of outlets.

IPC Classes  ?

45.

PRINTHEAD HAVING HEATED SHIELD PLATE

      
Application Number EP2018051367
Publication Number 2018/141565
Status In Force
Filing Date 2018-01-19
Publication Date 2018-08-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Thelander, Jason
  • Burke, David
  • Thomas, Andrew

Abstract

An inkjet printhead includes: a manifold having a plurality of ink outlets defined in a manifold surface; a plurality of printhead chips mounted to the manifold surface and aligned with the ink outlets; a PCB mounted to the manifold surface and offset from the ink outlets, the PCB being electrically connected to the printhead chips; and a shield plate covering the PCB. The shield plate has one face in thermal contact with the PCB and an exposed opposite

IPC Classes  ?

46.

ROLLER FEED MECHANISM FOR PRINTER HAVING MULTIPLE PRINTHEADS

      
Application Number EP2018051137
Publication Number 2018/141550
Status In Force
Filing Date 2018-01-17
Publication Date 2018-08-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Balala, Rommel
  • Baterna, Dan
  • Sy, Billy
  • Hibbard, Christopher

Abstract

A printer (1) includes: a first fixed printhead (3); a second fixed printhead (5) positioned downstream of the first printhead (3) relative to a media feed direction (F); a fixed platen (7) for supporting print media (9); an input roller assembly (15) positioned upstream of the first printhead (3), the input roller assembly (15) comprising a pair of input rollers (16A, 16B) having a first nip force N1; an output roller assembly (21) positioned downstream of the second printhead (5), the output roller assembly (21) comprising a pair of output rollers (22A, 22B) having a second nip force N2; and an intermediary roller assembly (25) positioned between the first and second printheads, the intermediary roller assembly (25) comprising a pair of intermediary rollers (24A, 24B) having a third nip force N3. The nip forces satisfy the relationship N1 > N2 > N3 for optimal printing results.

IPC Classes  ?

  • B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
  • B41J 13/03 - Rollers driven, e.g. feed rollers separate from platen
  • B41J 2/21 - Ink jet for multi-colour printing

47.

METHOD OF MINIMIZING STITCHING ARTIFACTS FOR OVERLAPPING PRINTHEAD SEGMENTS

      
Application Number EP2017073372
Publication Number 2018/077536
Status In Force
Filing Date 2017-09-15
Publication Date 2018-05-03
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor Lau, Daniel

Abstract

A method of printing an image using a printing system having first and second overlapping printhead segments. The method includes the steps of: (i) identifying a strip of the image to be printed in an overlap region of the first and second printhead segments; (ii) determining a continuous seam in the strip based on a cost function, the cost function including a parameter selected from the group consisting of: (a) minimizing a density of printed ink along the seam; and (b) maximizing a luminance along the seam; and (iii) printing the image using the first and second printhead segments, the printing including stitching the first and second printhead segments across the seam. The strip contains variable image content and the seam has a varying position within the strip.

IPC Classes  ?

  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 19/14 - Character- or line-spacing mechanisms with means for effecting line or character spacing in either direction
  • G06K 15/10 - Arrangements for producing a permanent visual presentation of the output data using printers by matrix printers
  • H04N 1/407 - Control or modification of tonal gradation or of extreme levels, e.g. background level

48.

PRINT MODULE FOR MODULAR PRINTER HAVING REPLACEABLE PRINTHEAD CARTRIDGES

      
Application Number EP2017057792
Publication Number 2017/190897
Status In Force
Filing Date 2017-03-31
Publication Date 2017-11-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Profaca, Mark
  • Burke, David
  • Sy, Billy
  • Alemana, Gilbert
  • Hibbard, Christopher
  • Balala, Rommel

Abstract

A print module including a printhead cartridge releasably engaged with a supply module. The supply module includes a body housing electronic circuitry for supplying power and data to a printhead of the printhead cartridge; and an ink inlet module and an ink outlet module flanking the body at opposite sides thereof. Each of the ink inlet and ink outlet modules having a respective ink coupling engaged with complementary inlet and outlet couplings of the printhead cartridge.

IPC Classes  ?

  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

49.

PRINTER HAVING PRINTHEAD EXTENDING AND RETRACTING THROUGH MAINTENANCE MODULE

      
Application Number EP2017057903
Publication Number 2017/190902
Status In Force
Filing Date 2017-04-04
Publication Date 2017-11-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Profaca, Mark
  • Burke, David
  • Sy, Billy
  • Alemana, Gilbert
  • Hibbard, Christopher
  • Balala, Rommel

Abstract

A printer includes: a media support defining a media feed path; and a pagewide printing unit for printing onto media fed along the media feed path. The printing unit includes: a maintenance chassis fixedly positioned over the media feed path, the maintenance chassis having a maintenance module fixedly mounted thereto; a print bar chassis movably mounted on the maintenance chassis, the print bar chassis including a print module having a printhead; and a lift mechanism for raising and lowering the print bar chassis relative to the maintenance chassis between a maintenance position a printing position. The printhead extends and retracts through a space defined by the maintenance module in the printing and maintenance positions, respectively.

IPC Classes  ?

  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

50.

PRINTER HAVING L-SHAPED MAINTENANCE MODULES FOR PLURALITY OF PRINTHEADS

      
Application Number EP2017057902
Publication Number 2017/190901
Status In Force
Filing Date 2017-04-03
Publication Date 2017-11-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Profaca, Mark
  • Burke, David
  • Sy, Billy
  • Alemana, Gilbert
  • Hibbard, Christopher
  • Balala, Rommel

Abstract

A printer including: a print module having a printhead for printing onto media fed along a media feed path and a maintenance module for maintaining the printhead. The maintenance module includes an L-shaped frame having a longer arm extending parallel with a longitudinal axis of the printhead and a shorter arm. The longer arm includes a capper for capping the printhead and the shorter arm includes a wiper for longitudinally wiping the printhead.

IPC Classes  ?

  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

51.

MONOCHROME INKJET PRINTHEAD CONFIGURED FOR HIGH-SPEED PRINTING

      
Application Number EP2017058713
Publication Number 2017/190926
Status In Force
Filing Date 2017-04-11
Publication Date 2017-11-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Jackson, Garry
  • Berry, Norman
  • Hudson, Michael
  • Brown, Brian
  • Mallinson, Samuel
  • Mcbain, Geordie

Abstract

An inkjet printhead includes an elongate fluid manifold having a base which includes a truss structure. The truss structure has webs extending between opposite chords, wherein a plurality of openings between the webs and the chords define fluid outlets. One or more printhead chips are attached to the webs of the truss structure with each printhead chip receiving printing fluid from a plurality of the fluid outlets.

IPC Classes  ?

  • B41J 2/14 - Structure thereof
  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/515 - 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 line printer type
  • 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 2/19 - Ink jet characterised by ink handling for removing air bubbles

52.

INK DELIVERY SYSTEM FOR SUPPLYING INK TO MULTIPLE PRINTHEADS AT CONSTANT PRESSURE

      
Application Number EP2017058893
Publication Number 2017/190934
Status In Force
Filing Date 2017-04-12
Publication Date 2017-11-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Thelander, Jason
  • Profaca, Mark
  • Wheatley, Stuart
  • Meyer, Craig

Abstract

An ink delivery system for an inkjet printer includes: a positive ink line having a controlled positive ink pressure; a negative ink line having a controlled negative ink pressure; one or more print modules interconnected between the positive ink line and the negative ink line via respective inlet and outlet lines. Each print module includes: a printhead; a control valve positioned at an inlet port of the print module for controlling an ink pressure in the printhead; an ink pressure sensor for sensing an ink pressure in the print module; and a controller for receiving feedback from the pressure sensor and controlling the control valve. During printing, the ink pressure sensor, the controller and the control valve cooperate to control a backpressure in the printhead within a predetermined backpressure range.

IPC Classes  ?

53.

SHEET FEED MECHANISM FOR PRINTER HAVING WIDE PRINT ZONE

      
Application Number EP2016068918
Publication Number 2017/036741
Status In Force
Filing Date 2016-08-08
Publication Date 2017-03-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Sanaei, Kianoush Mir
  • Moghaddasian, Reza
  • Tsubono, Makomo

Abstract

A printer includes: a first fixed printhead (3) having a respective first print zone; a first platen (7) positioned in the first print zone; a second fixed printhead (5) positioned downstream of the first printhead having a respective second print zone; a second platen (11) positioned in the second print zone; an input roller assembly (15) configured for feeding media sheets along a downward trajectory towards the first platen; an intermediary roller assembly (19) positioned between the first and second platens and configured for receiving the media sheets from the first platen and feeding the media sheets along a downward trajectory towards the second platen; and an exit roller assembly (21) for receiving the media sheets from the second platen. The second platen is positioned relatively lower than the first platen to facilitate a stepped media feed path with minimal distance between the first and second printheads.

IPC Classes  ?

  • B41J 3/54 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
  • B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
  • B41J 11/20 - Platen adjustments for varying the strength of impression, for a varying number of papers, for wear or for alignment

54.

BELT ASSEMBLY FOR HIGH-SPEED INKJET PRINTING

      
Application Number EP2016068596
Publication Number 2017/025417
Status In Force
Filing Date 2016-08-04
Publication Date 2017-02-16
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Sanaei, Kianoush Mir
  • Moghaddasian, Reza
  • Hibbard, Christopher

Abstract

A printer includes: a printhead assembly (9) having a print zone (5) and a belt assembly for feeding print media (22) past the print zone in a media feed direction. The belt assembly includes: an endless belt (1) tensioned between a first roller (3) upstream of the print zone and a second roller (7) downstream of the print zone; a drive mechanism (24) for moving the endless belt in the media feed direction; and a fixed platen (20) positioned in the print zone. The endless belt is guided around and below the fixed platen.

IPC Classes  ?

  • B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
  • B41J 13/08 - Bands or like feeding devices
  • B41J 15/04 - Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
  • B41J 25/308 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

55.

PROCESS FOR FILLING ETCHED HOLES

      
Application Number EP2016052318
Publication Number 2016/131657
Status In Force
Filing Date 2016-02-03
Publication Date 2016-08-25
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • North, Angus
  • O'Reilly, Ronan
  • Mcavoy, Gregory

Abstract

A process for filling one or more etched holes defined in a frontside surface of a wafer substrate. The process includes the steps of: (i) depositing a layer of a thermoplastic first polymer onto the frontside surface and into each hole; (ii) reflowing the first polymer; (iii) exposing the wafer substrate to a controlled oxidative plasma; (iv) optionally repeating steps (i) to (iii); (v) depositing a layer of a photoimageable second polymer; (vi) selectively removing the second polymer from regions outside a periphery of the holes using exposure and development; and (vii) planarizing the frontside surface to provide holes filled with a plug comprising the first and second polymers, which are different than each other. Each plug has a respective upper surface coplanar with the frontside surface.

IPC Classes  ?

  • B41J 2/16 - Production of nozzles
  • B81C 1/00 - Manufacture or treatment of devices or systems in or on a substrate

56.

INK ADDITIVE COMBINATIONS FOR IMPROVING PRINTHEAD LIFETIME

      
Application Number EP2015074423
Publication Number 2016/078859
Status In Force
Filing Date 2015-10-21
Publication Date 2016-05-26
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Tyvoll, David
  • Fielder, Simon
  • Gimona, Michele
  • Barton, Christopher
  • Prashar, Jognandan
  • Shepard, Michele
  • Blake, Iain
  • Myors, Richard
  • Grassy, Luke

Abstract

An inkjet ink for improving printhead lifetimes includes: an aqueous-based ink vehicle; a colorant; an anti-kogation additive; and an anti-corrosion additive having at least one acetylenic group, the acetylenic group being absent any tertiary or quaternary α-carbon atoms.

IPC Classes  ?

  • C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes

57.

INKJET NOZZLE DEVICE HAVING IMPROVED LIFETIME

      
Application Number EP2015076112
Publication Number 2016/078957
Status In Force
Filing Date 2015-11-10
Publication Date 2016-05-26
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • North, Angus, John
  • Barton, Christopher, Saul

Abstract

An inkjet nozzle device includes a resistive heater element for ejecting ink droplets through a nozzle opening. The resistive heater element includes: an aluminide layer having a native passivating oxide and a tantalum oxide layer disposed on the native passivating oxide of the aluminide layer. The tantalum oxide layer is a relatively thin layer, which may be deposited using atomic layer deposition.

IPC Classes  ?

58.

INKJET NOZZLE DEVICE WITH ROOF ACTUATOR CONNECTED TO LATERAL DRIVE CIRCUITRY

      
Application Number EP2015070989
Publication Number 2016/041913
Status In Force
Filing Date 2015-09-14
Publication Date 2016-03-24
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • O'Reilly, Ronan Padraig Sean
  • Mcavoy, Gregory John
  • Kerr, Emma Rose
  • Lawlor, Vincent Patrick
  • Bagnat, Misty
  • Donohoe, Brian Kevin
  • Ryan, Eimear

Abstract

An inkjet printhead integrated circuit includes: a substrate having a silicon layer; a nozzle plate disposed on the silicon layer; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber having a roof actuator; drive circuitry laterally disposed relative to the nozzle chamber; a connection arm extending parallel with the nozzle plate 5 from the actuator towards the drive circuitry; and a metal via interconnecting each connection arm and the drive circuitry, the metal via extending perpendicularly to the nozzle plate. The drive circuitry is positioned proximal the nozzle plate relative to a plane of the floor.

IPC Classes  ?

59.

PRINTER CONFIGURED FOR OPTIMIZED PRIMING

      
Application Number EP2015056163
Publication Number 2015/150148
Status In Force
Filing Date 2015-03-23
Publication Date 2015-10-08
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Sanaei, Kianoush Mir
  • Mcauliffe, Patrick

Abstract

An inkjet printer includes a printhead having first and second ports; an ink container for supplying ink to the printhead, the ink container having a supply port and a return port; a first ink conduit interconnecting the supply port and the first port; a second ink conduit interconnecting the return port and the second port; an ink valve positioned in the first ink 5 conduit; a first pump positioned in the second conduit; and a second pump positioned in a valve bypass conduit. The first and second pumps are employed during pressurized priming of the printhead so as to optimize a pressure gradient along a length of the printhead.

IPC Classes  ?

  • B41J 2/17 - Ink jet characterised by ink handling

60.

INK FORMULATIONS FOR IMPROVING PRINTHEAD LIFETIME

      
Application Number EP2015054682
Publication Number 2015/144419
Status In Force
Filing Date 2015-03-05
Publication Date 2015-10-01
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Prashar, Jognandan
  • Shepard, Michele
  • Bali, Doreen

Abstract

An inkjet ink includes: (i) a disazo dye of formula (I): (ii) sulfolane; (iii) a glycol compound selected from the group consisting of: ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and pentaethylene glycol; and (iv) water.

IPC Classes  ?

  • C09D 11/30 - Inkjet printing inks
  • C09D 11/328 - Inkjet printing inks characterised by colouring agents characterised by dyes

61.

PRINTER HAVING REGENERATIVE INTERMEDIARY DRIVE

      
Application Number EP2014079099
Publication Number 2015/106938
Status In Force
Filing Date 2014-12-23
Publication Date 2015-07-23
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Mackey, Paul Ian
  • Jensen, David William

Abstract

A printer includes: a media tray (10); a picker (15); a media guide (16) for guiding the media sheets around a media feed path towards a print zone (22); a main drive roller assembly (23) positioned upstream of the print zone; and an intermediary drive roller assembly (40,42,44) positioned between the picker and the main drive roller assembly. The intermediary drive roller assembly includes: an intermediary idler roller (42) mounted on an intermediary idler shaft; and an intermediary drive roller (44) having a gripping surface engaged with the intermediary idler roller. An intermediary drive shaft is pivotally connected to a support shaft via a swing arm (40, 72), such that the intermediary drive shaft is arcuately moveable relative to the intermediary idler shaft to provide a variable distance therebetween.

IPC Classes  ?

  • B65H 5/06 - Feeding articles separated from piles; Feeding articles to machines by rollers
  • B65H 9/16 - Inclined tape, roller, or like article-forwarding side registers
  • B41J 13/26 - Registering devices
  • B65H 3/06 - Rollers or like rotary separators

62.

METHOD OF PRINTING PIGMENT-BASED INKS, INK SET, INKS AND PRINTERS THEREFOR

      
Application Number EP2014073613
Publication Number 2015/074857
Status In Force
Filing Date 2014-11-03
Publication Date 2015-05-28
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Fukuda, Teruyuki
  • Tanaka, Satoshi
  • Bisson, Adrian
  • Davey, Roger
  • Myors, Richard
  • Bernard, Stephen
  • Read, Philippa
  • Blake, Iain
  • Carter, Steven

Abstract

A method of inkjet printing includes the steps of: printing a first ink onto a print medium, the first ink including a first self-dispersible pigment, the first ink having a first pigment content A; and subsequently printing a second ink onto the print medium at least partially over the first ink, the second ink including a second pigment and a polymeric dispersant encapsulating the second pigment, the second ink having a second pigment content B. The first self dispersible pigment and the second pigment have a same color; the pigment content A of the first ink and the pigment content B of the overprinted second ink have a relationship 0.8≤A/B≤1.2; and a polymer acid value of the polymeric dispersant is in the range of 100 to 170.

IPC Classes  ?

  • B41M 5/00 - Duplicating or marking methods; Sheet materials for use therein
  • C09D 11/40 - Ink-sets specially adapted for multi-colour inkjet printing
  • C09D 11/322 - Pigment inks
  • C09D 11/324 - Pigment inks containing carbon black

63.

MODULAR PRINTER HAVING NARROW PRINT ZONE

      
Application Number EP2014069643
Publication Number 2015/071007
Status In Force
Filing Date 2014-09-15
Publication Date 2015-05-21
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Campillo, Alejandro
  • Ramaswamy, Rajan
  • Tran, Tinh

Abstract

A modular printer includes: (a) a media feed path defining a media feed direction; (b) a first printer module suspended over the media feed path; and (c) a second printer module suspended over the media feed path and at least partially overlapping the first printer module in the media feed direction. The first and second printer modules have respective first and second printheads and maintenance assemblies. The first and second printheads are relatively proximal to each other with respect to the media feed direction, and the first and second maintenance assemblies are relatively distal from each other with respect to the media feed direction.

IPC Classes  ?

  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 25/34 - Bodily-changeable print heads or carriages
  • B41J 25/304 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

64.

INKJET NOZZLE DEVICE HAVING HIGH DEGREE OF SYMMETRY

      
Application Number EP2014063462
Publication Number 2015/014547
Status In Force
Filing Date 2014-06-25
Publication Date 2015-02-05
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor North, Angus John

Abstract

An inkjet nozzle device includes a main chamber having a floor, a roof and a perimeter wall extending between the floor and the roof. The main chamber includes: a firing chamber having a nozzle aperture defined in the roof and an actuator for ejection of ink through the nozzle aperture; an antechamber for supplying ink to the firing chamber, the antechamber having a main chamber inlet defined in the floor; and a baffle structure partitioning the main chamber to define the firing chamber and the antechamber, the baffle structure extending between the floor and the roof. The firing chamber and the antechamber have a common plane of symmetry.

IPC Classes  ?

65.

METHOD OF INKJET PRINTING AND MAINTAINING NOZZLE HYDRATION

      
Application Number EP2014064777
Publication Number 2015/010911
Status In Force
Filing Date 2014-07-09
Publication Date 2015-01-29
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • North, Angus John
  • Palma, Philip
  • Brown, Brian
  • Mcrae, Duncan
  • Prashar, Jognandan
  • Jurevic, Mile
  • Mallinson, Sam
  • Mcbain, Geordie
  • Lin, Chia-An
  • Myers, Sam
  • Tsang, Jeffrey
  • Powell, Benjamin

Abstract

A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; and printing a keep-wet pattern onto the print medium from each ink plane of the printhead, the keep-wet pattern being defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. A first keep-wet pattern from a first ink plane is printed at a higher frequency than a second keep-wet pattern from a second ink plane, the first ink plane being furthest upstream in the printhead.

IPC Classes  ?

  • B41J 2/155 - Arrangement thereof for line printing
  • B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

66.

INK FOR IMPROVING PRINTHEAD LIFETIME

      
Application Number EP2014063461
Publication Number 2015/003910
Status In Force
Filing Date 2014-06-25
Publication Date 2015-01-15
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Fielder, Simon
  • Gimona, Michele
  • Barton, Christopher

Abstract

An inkjet ink includes: an ink vehicle; a colorant; and an acetylenic compound having an alkoxylated hydroxyl group, wherein the hydroxyl group is a primary or secondary hydroxyl group and the acetylenic compound is absent a lipophilic group. Printheads having resistive heater elements exposed to such inks have prolonged lifetimes compared to reference inks.

IPC Classes  ?

  • C09D 11/00 - Inks
  • B41J 2/00 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed

67.

COMPACT PINCH VALVE

      
Application Number EP2013075592
Publication Number 2014/111195
Status In Force
Filing Date 2013-12-04
Publication Date 2014-07-24
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Dyer, Geoffrey Philip
  • Balala, Rommel
  • Knight, Paul Charles
  • Sanaei, Kianoush Mir
  • Jayatileke, Saminda

Abstract

An improved pinch valve includes a camshaft and associated cam(s) controlling the position of a pivotally-mounted first pinch arm and an opposed, pivotally-mounted second pinch arm. The respective pinch arms are provided symmetrically about a central plane which contains an axis of the camshaft. A spring extends across the central plane and interconnects the respective pinch arms so as to urge both pinch arms towards the central plane. A mechanical advantage lever is provided such that the pinching force is greater than the spring force.

IPC Classes  ?

  • B41J 2/175 - Ink supply systems
  • F16K 7/06 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with tubular diaphragm constrictable by external radial force by means of a screw-spindle, cam, or other mechanical means

68.

METHOD OF HIGH-SPEED PRINTING FOR IMPROVING OPTICAL DENSITY IN PIGMENT-BASED INKS

      
Application Number EP2013070987
Publication Number 2014/056950
Status In Force
Filing Date 2013-10-08
Publication Date 2014-04-17
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Bernard, Steven Adam
  • Davey, Roger Michael
  • Bisson, Adrian Peter

Abstract

A method of inkjet printing includes the steps of: (a) moving a substrate past a printhead; (b) printing a pigment-based ink onto the substrate from a first color channel of the printhead; and (c) overprinting a fixer ink onto the pigment-based ink from a second color channel of the printhead. The fixer ink is overprinted onto the pigment-based ink within a period of less than 5 ms.

IPC Classes  ?

  • B41J 2/21 - Ink jet for multi-colour printing

69.

METHOD OF IDENTIFYING DEFECTIVE NOZZLES IN AN INKJET PRINTHEAD

      
Application Number EP2013068859
Publication Number 2014/044587
Status In Force
Filing Date 2013-09-11
Publication Date 2014-03-27
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Allworth, Peter
  • Baker, Matthew

Abstract

A method of identifying defective nozzles of a printhead. The method includes the steps of: (i) instructing each nozzle in one ink plane of the printhead to print a respective coded line pattern, each coded line pattern being represented by a column of printed pixels and absent pixels, the coded line patterns being defined by first and second coding schemes encoding a position of each nozzle within its respective cell and a position of each cell within its respective ink plane; (ii) firing each nozzle of the ink plane to print a test pattern comprising a plurality of neighbouring coded line patterns; (iii) imaging an area of the test pattern to obtain an imaged test pattern; (iv) decoding the imaged test pattern using the first and second coding schemes; and (iv) identifying the defective nozzles using the decoded imaged test pattern.

IPC Classes  ?

  • B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
  • B41J 2/21 - Ink jet for multi-colour printing
  • B41J 29/393 - Devices for controlling or analysing the entire machine

70.

PRINTER CONFIGURED FOR EFFICIENT AIR BUBBLE REMOVAL

      
Application Number EP2013064085
Publication Number 2014/009232
Status In Force
Filing Date 2013-07-03
Publication Date 2014-01-16
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Esdaile-Watts, Edward
  • Alemana, Gilbert
  • Brice, Robert
  • Sanaei, Kianoush Mir

Abstract

An inkjet printer includes: a printhead having a first port and a second port; an ink container for supplying ink to the printhead, the ink container comprising a supply port and a return port; a first ink conduit interconnecting the supply port and the first port; a second ink conduit interconnecting the return port and the second port; and a pump configured for pumping ink from the supply port to the return port. The second ink conduit has a smaller internal cross-sectional area than the first ink conduit for providing a faster flow speed of ink in the second ink conduit relative to the first ink conduit when the pump is actuated.

IPC Classes  ?

71.

PRINTER HAVING INK DELIVERY SYSTEM WITH AIR COMPLIANCE CHAMBER

      
Application Number EP2013064086
Publication Number 2014/009233
Status In Force
Filing Date 2013-07-03
Publication Date 2014-01-16
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Balala, Rommel
  • Brice, Robert
  • Sanaei, Kianoush Mir

Abstract

An inkjet printer includes: an inkjet printhead; an ink delivery system configured for supplying ink to the printhead at a negative hydrostatic pressure; and an air chamber in fluid communication with the ink delivery system. The air chamber has an air-permeable wall which is impervious to the ink. The air chamber provides dampening of pressure fluctuations in the ink delivery system and, further, is self-recovering from ingress of ink into the air chamber.

IPC Classes  ?

72.

PRINTER WITH CRISS-CROSS DUPLEXER

      
Application Number EP2013064087
Publication Number 2014/006116
Status In Force
Filing Date 2013-07-03
Publication Date 2014-01-09
Owner MEMJET TECHNOLOGY LIMITED (Ireland)
Inventor
  • Jensen, David
  • Mackey, Paul
  • Jayatileke, Saminda

Abstract

A printer includes: a stationary inkjet printhead (2); a media feed path (3) for guiding print media twice past the printhead (2); and a feed mechanism for feeding print media unidirectionally through the media feed path (3) at a constant speed. The media feed path (3) includes: a first section (3a) configured for feeding print media past the printhead (2) from a first side of the printhead in a first direction with respect to the printhead (2); a second section (3b) downstream of the first section (3a), the second section (3b) being configured for guiding print media around a single loop, the loop being positioned at a second side of the printhead (2) opposite the first side; and a third section (3c) downstream of the second section (3b), the third section (3c) being configured for feeding print media past the printhead (2) from the second side of the printhead (2) in an opposite second direction with respect to the printhead (2).

IPC Classes  ?

  • B41J 3/60 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on both faces of the printing material