The present invention relates to a printing module comprising a first imaging device and a slot for accommodating an optional second imaging device. Further, the present invention relates to an ink supply module comprising a slot for accommodating an optional drying / fixation apparatus, and a second ink supply device. Also, the ink supply module and the printing module comprise ink inlet/outlet ports such that the optional second imaging device in the printing module, if present, can be supplied ink from the second ink supply in the ink supply module when the printing module and the ink supply module are combined to form a printer.
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
A method of nozzle failure detection in an ink jet printer having a plurality of ejection units (E) each of which comprises a nozzle (14) and an associated liquid chamber with an electromechanical transducer for energizing a pressure wave in the liquid chamber so as to expel an ink droplet from the nozzle (14), the method comprising steps of nozzle failure detection to be performed, for each ejection unit, with a given minimum detection frequency, wherein each nozzle failure detection step comprises: -energizing the transducer with a waveform that does not lead to the ejection of a droplet but creates a pressure fluctuation that is sensitive to whether or notthe ejection unit is in a malfunction state; and -measuring the pressure fluctuation in order to detect the malfunction state, the method comprising: -defining a mask pattern (22) that is independent of image contents to be printed, said mask pattern defining positions of blank pixels (24) on a dark background (26) such that the blank pixels are evenly distributed over an area of an image (20), wherein one blank pixel occurs in each pixel column printed with one of the nozzles (14);and -when an image is being printed, performing the nozzle failure detection steps for each ejection unit at timings at which the respective nozzles (14) are in pixel positions that belong to the mask pattern (22).
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
A duplex printing method comprising, for each duplex copy to be printed, the steps of: a) determining an amount of shrinkage of a media sheet (58) onto which a front side image has been printed; b) scaling an image to be printed on a back side of the sheet (58) with a scaling function that depends upon the determined shrinkage; and c) printing the scaled image on the back side of the sheet (58), wherein the step a) comprises the steps of: a1)predicting a shrinkage of a media sheet (58) on the basis of process parameters that characterize a process of printing the front side image and on the basis of a model that is defined by a set of model parameters and describes a dependence of the shrinkage on the process parameters (P), said process parameters including at least an amount of marking material to be applied to the front side of the sheet (58), a2) measuring (60) an actual shrinkage of the sheet; and a3)adjusting the model parameters (M, M') based on a comparison between the predicted shrinkage (S) and the measured shrinkage (A) to improve a prediction of a shrinkage for a subsequent sheet.
G03G 15/23 - Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
B41J 29/393 - Devices for controlling or analysing the entire machine
A deflecting device (1) for deflecting a conveyed sheet comprises a guiding assembly (40) having an inlet (41) for receiving a conveyed sheet from an upstream section (61) of a main conveying path, a primary outlet (42) for discharging a conveyed sheet onto a downstream section (62) of a main conveying path, a secondary outlet (43) for discharging a conveyed sheet onto an initial section (63) of a side conveying path, and a passing area (65) for passing a conveyed sheet from the inlet (41) towards the primary outlet (42); and a deflector (50) for deflecting a conveyed sheet towards the secondary outlet (43), movable into a receiving position for receiving a leading edge of a conveyed sheet inside the passing area (65) and movable into a discharge position (P2) for discharging a leading edge of a conveyed sheet towards the secondary outlet (43), wherein the deflector (50) defines a curved trajectory (66) for a conveyed sheet deflected towards the secondary outlet (43) in the discharge position (P2), wherein one side (66a) of the curved trajectory (66) faces the primary outlet (42). A functional portion (53) of the deflector is configured to be inserted into the passing area (65) on the one side (66a) of the curved trajectory (66) when the deflector (50) moves into the receiving position, and to be retracted from the passing area (65) on the one side (66a) of the curved trajectory (66) when the deflector (50) moves out of the discharge position (P2).
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
B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
A method for controlling an inkjet printer is provided. The printer comprises a reciprocating print head that applies a curable ink on a substrate in an at least two-pass print process. A print mask is applied to determine which dot positions are addressed in a pass of the print head. The ink is positionally fixed in a fixing step directly after application and cured in a curing step on a part of the substrate where the application of ink is completed. The level of fixing is adjustable and an amount of clustering of pixels in the print mask related to a print mode, associated with the level of fixing, is varied in dependence on the level of fixing.
A method of operating a droplet ejection device comprising an ejection unit arranged to eject droplets of a liquid and comprising a nozzle (22) formed in a nozzle face (24), a liquid duct (16) connected to the nozzle (22), and an electro-mechanical transducer (28) arranged to create an acoustic pressure wave in the liquid in the duct (16), wherein the liquid and the material constituting the nozzle face (24) are paired such that the liquid is wetting for the nozzle face (24), characterized by a step of monitoring a parameter that represents a state of a liquid pool (30) formed on the nozzle face (24) around the nozzle (22), and a step of enabling the ejection unit to operate as long as the pool (30) is present and the monitored parameter is within a predetermined range.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
A method of operating a droplet ejection device comprising an ejection unit arranged to eject droplets of a liquid and comprising a nozzle (22) formed in a nozzle face (24), a liquid duct (16)connected to the nozzle (22), and an electro-mechanical transducer (28) arranged to create an acoustic pressure wave in the liquid in the duct (16), characterized by a step of detecting low-viscosity liquid on the nozzle face (24) by analyzing a signal (S) obtained from the transducer (28).
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
The invention provides a controller for a multi-roll printer, a printing system with such a printer and such a controller and a method for controlling such a printer. A user may assign print jobs directly to one of the rolls by assigning graphical representations (53, 4) of the print jobs to regions (A1, A2) corresponding to those rolls in a GUI (121). The user may also assign print jobs to a region (A3) in the GUI (121) that is not associated with any particular roll, as a result of which each image of said print job is individually assigned automatically to at least one of the rolls.
G06F 3/0481 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
A method of duplex printing on a cut sheet printer having a sheet supply system for feeding sheets to a print station in a first orientation for printing a first image on the first side of the sheet and then in a second orientation for printing a second image on a second side of the sheet includes, for each sheet: (a) estimating a likelihood P1 that, in a print process for printing the first image, the sheet will become damaged to such an extent that the damage will compromise a later print process for printing the second image; (b) comparing the likelihood P1 to a threshold T; and (c) if the likelihood P1 exceeds the threshold T, reversing the print order so that the second image is printed before the first image. The method ensures that the riskier image is printed on the duplex pass. The chances of the sheet with the simplex image then successfully passing through the duplex pass are then increased.
B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
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
G03G 15/23 - Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
A duplex sheet printer comprising a first and second sheet quality detection device for determining a suitability of a sheet for printing. The first sheet quality detection device applies a first sheet rejection threshold to which sensed sheets are compared, while the second sheet quality detection device applies a second sheet rejection threshold different from the first. The controller designates sheets in the printing system to be sensed by one of the sheet quality detection devices in accordance with the sheet's media type or the sheet being on a simplex or duplex pass. Different rejection criteria are thus applied to the sheets without adjustment of a sheet quality detection device, resulting in high speed printing.
A method is provided for cancelling an electric crosstalk contribution in a monitoring signal from a monitored electro-mechanical transducer in a device including at least three electro-mechanical transducers. The crosstalk contribution results from an actuation of other transducers than the monitored transducer. The method includes selecting a second transducer, associated with the first, monitored transducer, wherein the electric crosstalk caused by an actuation of a third transducer is equal in the first and second transducer; actuating the first transducer and not acutating the second transducer; simultaneously measuring a monitoring signal from the first transducer and the second transducer; and subtracting the two monitoring signals to obtain a clean monitoring signal from the first transducer.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
A method of editing a print document, comprising an impositioning step for determining positions of print objects in a document to be printed, the positions being determined in view of a later step of finishing the document after printing, the method comprising steps of: a) providing document data on a client computer (10); b) sending document data to a cloud computer (24) and requesting the cloud computer to perform the impositioning step; and c) sending the impositioned document data to a printer for printing the document; characterized in that: - step a) comprises a sub-step of splitting the document data into contents data (18) and box information data (16), the box information data (16) specifying shapes and dimensions and intended positions of the print objects; - in step b), only the box information data (16) are sent to the cloud computer (24); and - when the cloud computer (24) has performed the impositioning step on the box information data, the impositioned box information data (16') are merged with the contents data either in the client computer (10) or at the printer.
An ink supply system for supplying ink to a drop-forming unit of a print-head in a printing apparatus includes a reservoir for holding or storing a volume of liquid ink to be supplied to a drop-forming unit in a print-head, and a heating device arranged upstream of the reservoir for heating the ink to an desired operating temperature. The heating device includes a heating body for transferring heat to the ink, wherein the heating body includes a plurality of channels which extend from an top side of the heating body to an bottom side of the heating body for conveying the ink to the reservoir, whereby the ink is heated via contact with walls of the channels. The heating body typically includes a substantially monolithic body of a highly thermally conductive material and the plurality of channels are substantially parallel channels which extend through the heating body. A print-head of a printing apparatus incorporating the ink supply system, and a heating device are also disclosed.
A roll-fed printing apparatus and a method for controlling a roll-fed printing apparatus for printing images on at least one recording medium from an image queue. A part of the image queue is saved. The part comprises the ripped images at established arbitrary positions on the roll of medium and events according to a plurality of event image objects placed in the image queue into a roll file which is stored in a history roll queue storage of the controller. At least part of the ripped images saved in the roll file are reprinted on a new roll of medium having a same roll width as the arbitrary roll width according to a sequence order and the arbitrary positions saved in the roll file. During reprinting, the corresponding events saved in the roll file are executed.
A sheet transfer device for transferring a sheet between two sheet processing devices comprising a switch for directing sheets from a first transport path coming from the first sheet processing device onto a two-way transport path or for directing sheets from the two-way transport path onto a second transport path for feeding sheets to the second sheet processing device. A transport pinch is provided along the two way transport path for reversing a sheet on the two-way transport path. When in use, the two-way transport path extends downward in a vertically extending free-hanging chamber wherein the sheet engaged by the transport pinch is allowed to hang freely under the influence of gravity. Thereby, a compact device is formed which is able to adjust the sheet to a suitable orientation for the second processing device. The device further prevents forces from the first processing device to disrupt the sheet's orientation in the second processing device.
B65H 9/00 - Registering, e.g. orientating, articles; Devices therefor
B65H 7/08 - Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect front register
B65H 7/10 - Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect side register
B65H 9/16 - Inclined tape, roller, or like article-forwarding side registers
16.
Roll-fed printing apparatus, software medium, and method for controlling a roll-fed printing apparatus
A roll-fed printing apparatus and a method for controlling a roll-fed printing apparatus for printing images on at least one recording medium are disclosed. The roll-fed apparatus includes a print engine, a controller including a roll managing system for managing the printing of ripped images on the at least one recording medium. The method includes the steps of the controller receiving a plurality of ripped images from a raster image processor into memory of the roll managing system, for each ripped image the roll managing system establishing an arbitrary position in the plane of the at least one recording medium at which arbitrary position the ripped image is intended to be printed, the controller creating subsequent image swathes for printing the ripped images according to the established arbitrary positions of the ripped images, the print engine subsequently printing the created subsequent image swathes; and the roll managing system displaying and maintaining an image queue area including the ripped images to be printed on the at least one recording medium and the ripped images currently being printed on the at least one recording medium. The method includes the steps of the roll managing system providing a plurality of event image objects which are manually or automatically placeable in the image queue area and the image queue area is configured to receive an event image object of the plurality of event image objects between the ripped images to be printed on the least one recording medium in the image queue area, and the controller setting for an event image object of the plurality at least one printing and/or finishing command to be executed by the printing apparatus in accordance with a timing sequence of printing of the print jobs displayed in the image queue area.
G06K 15/10 - Arrangements for producing a permanent visual presentation of the output data using printers by matrix printers
G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers
17.
ROLL-FED PRINTING APPARATUS, RASTER IMAGE PROCESSOR, SOFTWARE MEDIUM, METHOD FOR CONTROLLING A ROLL-FED PRINTING APPARATUS, AND METHOD FOR CONTROLLING THE RASTER IMAGE PROCESSOR
Aroll-fed printing apparatus, a raster image processor, a software medium,and a method of controlling a roll-fed printing apparatus. The roll-fed printing apparatus comprisesa print engineand a controller. The controller comprises a roll managing systemfor managing the printing of ripped images on at least one recording medium. Themethod comprisesthe steps ofthe controller receiving a plurality of ripped images from a raster image processor in memory of the roll managing system irrespectively of the presence of the least one recording medium in the roll-fed printing apparatus, for each ripped image the roll managing system establishing an arbitrary position in the plane of the at least one recording medium at which arbitrary position the ripped image is intended to be printed, the controller creating subsequent image swathes for printing the ripped imagesaccording to the established arbitrary positions of the ripped images, the print engine subsequently printing the created subsequent image swathes, while printing the created subsequent image swathes, the roll managing system monitoring a first actual status of printing of the created subsequent image swathes, a second actual status of a timing of the ripped images to be printed and a third actual status of the at least one receiving medium; andthe roll managing system displaying and keeping up- to-date a dynamic roll preview area representing the at least one recording medium, planned ripped images to be printed on the at least one recording medium, ripped images currently being printed on the at least one recording medium and image items representing the monitored first, second and third actual statuses.
A method of scheduling print jobs for printing on a printer which has printing elements provided for printing in a number of different colors, characterized by the steps of:
a) calculating, for each color, a constraint time which specifies a time at which the printing elements for the respective color should be either operated or subjected to a maintenance treatment in order to avoid a risk of malfunction;
b) calculating, for each of a plurality of print jobs that have been scheduled already and are waiting in a print queue, an operation time at which the printing elements will be operating in the course of the processing of the print job; and
c) when a new print job is to be scheduled and the print jobs, including the new print job, comprise at least one job in which printing elements for at least one color are not operated, determining a sequence of the print jobs in the print queue, with corresponding recalculation of the constraint times and operation times, with an aim to extend the constraint times by operating the printing elements before expiry of their previously calculated constraint times.
Aspects of the disclosure relate to a method and a compensator via which the input edges of the encoder signal of an encoder may be transformed into a compensated encoder signal such that requirements with regard to a dot resolution of a printing device and with regard to a maximum activation frequency of the dot generators of the printing device are satisfied.
A roll-fed printing apparatus for printing at least a first and a second image on a recording medium, a method for controlling such a printing apparatus and a software medium are disclosed. According to the method, each swath is printed by a print head that reciprocates in a scanning direction, the print head being controlled to apply marking material to the recording medium in accordance with a first set of image lines for each swath to be printed; the first set of image lines being provided to the print head from a swath buffer; wherein the first set of image lines are transmitted to the swath buffer out of a second set of image lines stored in a line buffer to be printed without interruption; wherein, when the line buffer comprises the final image lines of a first bitmap representing the first image while there are still empty data storage sections within the line buffer starting image lines of a second bitmap representing the second image are transferred to the empty data storage section of the line buffer.
A method for manufacturing an inkjet print head comprises the steps of determining a misfit strain - electric field crystal phase relation for at least one composition of a piezoelectric material; selecting a misfit strain value and a composition of the piezoelectric material based on the determined misfit strain - electric field crystal phase relation for said composition; and based on the selected misfit strain and the composition of the piezoelectric material, forming a base layer and an actuator stack on the base layer, the actuator stack comprising the piezoelectric material, wherein the base layer and the actuator stack have predetermined properties providing the selected misfit strain and composition. Thus, an inkjet print head having a piezoelectric actuator that is operated on the basis of a crystal phase change is reliably manufacturable.
In a method for detecting a disturbance in an ejection unit of an inkjet print head, the ejection unit of the inkjet print head includes a pressure chamber for holding an amount of liquid and is in fluid communication with a nozzle orifice; and an actuator operatively coupled to the pressure chamber for generating a pressure wave in the liquid in the pressure chamber for ejecting a droplet of the liquid through the nozzle orifice upon application of a droplet ejection pulse. The method determining at least one resonance frequency of the pressure chamber; determining a disturbance detection pulse for generating a pressure wave in the liquid in the pressure chamber taking into account the resonance frequencies previously determined, wherein the disturbance detection pulse has a frequency spectrum different from a frequency spectrum of the droplet ejection pulse; detecting a residual pressure wave in the liquid in the pressure chamber; and analyzing the residual pressure wave previously detected for determining whether a disturbance for droplet ejection is present in the ejection unit. With this method, disturbances in the ejection unit may be derived from the residual pressure wave more reliably and easier.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
A method of ink jet printing wherein liquid ink is supplied to a plurality of nozzles via a common ink supply passage, and actuators associated with the nozzles are controlled to cause ink droplets to be expelled from the nozzles in accordance with image information to be printed, characterized by the steps of detecting a situation where a number of the nozzles which are connected to the common ink supply passage and are presently active but stop printing within a given time interval is larger than a given maximum number; if that situation is detected, activating at least one actuator associated with one of the nozzles that stop printing with sub-threshold agitation pulses which cause an agitation of a meniscus in the nozzle without a droplet being expelled.
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.
Roll-fed printing assembly, software medium, and method for controlling a roll-fed printing assembly
A roll-fed printing assembly, a software medium, and a method of controlling a roll-fed printing assembly are disclosed. The method includes: controlling the printing to execute a first print job containing a batch of nested individual jobs; detecting a pause state during the executing of the first print job; stopping the executing of the first print job in response to the detecting of the pause state; determining, for each individual job of the first print job, whether that individual job belongs to either: a first group of individual jobs that have already been printed successfully, or to a second group of individual jobs that have not yet been printed successfully; creating a second print job by automatic re-nesting of the jobs of the second group based on a nesting criterion; and controlling the printing assembly to execute the second print job.
A printing method for printing a digital image on a substantially flat substrate includes providing the digital image including a raster of a plurality of pixels; providing a height channel to the digital image defining a height for each pixel; discriminating in the digital image for each pixel a relief part, a white part and a skin part; providing an inking mask including a binary image of areas of the substrate to be finished and areas of the substrate not to be finished; image processing of the digital image by applying the inking mask to the image, wherein the height of a pixel within an area of the substrate to be finished is reduced by substantially reducing a height of the relief part of said pixel; and printing the processed image obtained in the image processing step on the substrate.
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 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B41M 5/00 - Duplicating or marking methods; Sheet materials for use therein
A method of nesting three-dimensional print objects on a print surface of a printer, wherein the locations for the print objects on the print surface are determined in view of the shape and size of the footprints of the objects so as to minimize the surface area required for accommodating the objects, and the locations for the print objects are determined also in view of intended heights of the objects, and objects with equal or similar height are grouped together, the method comprising a step of grouping the objects into classes of objects with similar heights, and a step of nesting the objects class by class, wherein the method is performed on a printer having a print head movable relative to the print surface in a main scanning direction and sub-scanning direction normal to the main scanning direction, and wherein the objects of each class are nested in a separate shelf that extends in the main scanning direction on the print surface and has a constant width in the sub-scanning direction.
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
B33Y 50/00 - Data acquisition or data processing for additive manufacturing
B29C 64/386 - Data acquisition or data processing for additive manufacturing
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
Disclosed is a substantially water-free pre-treatment composition having at least one of an acid or an acid anhydride in an organic matrix. Also disclosed is a kit of parts having the pre-treatment composition and an ink composition that has an intrinsic inferior water fastness when printed, where the ink contains a compound that is soluble in alkaline environment (ink as such) and insoluble in a neutral and/or acidic environment. Also disclosed is a printing method for improving the water fastness of a print made with an ink that has intrinsically low water fastness, by using a pre-treatment composition as disclosed.
B41M 5/00 - Duplicating or marking methods; Sheet materials for use therein
C09D 11/54 - Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
C09D 11/033 - Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
C09D 11/36 - Inkjet printing inks based on non-aqueous solvents
C09D 11/10 - Printing inks based on artificial resins
C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
28.
Duplex printing system for cut sheets and a method therefor
A printing system for cut sheets includes a controller configured to control the printing of image data on a plurality of sheets and scheduling the plurality of sheets in a printing order, a paper path comprising a duplex printing loop and a rotational functional component arranged in the duplex printing loop for guiding and processing a printed sheet for two passes along or on a surface of the rotational functional component, a print engine arranged in the duplex printing loop and configured to dispose marking material on the sheets according to the image data, in two passes, one side per pass. The controller is configured to schedule one-sided printed sheets for a first pass guided along or on the surface of the rotational functional component and two-sided printed sheets for a second pass guided along or on the surface of the rotational functional component by using the duplex printing loop and to determine a distance between subsequent sheets guided along or on the surface of the rotational functional component such that a location on the surface of the rotational functional component is covered by printed sides of two-sided sheets at most a maximum number of times before the location on the surface of the rotational functional component is covered by an unprinted side of a sheet. The maximum number is determined by a degree of pollution caused by the marking material printed on two-sided printed sheets when taking a second pass along or on the surface of the rotational functional component.
B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
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
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
G03G 13/23 - Processes involving the combination of more than one step according to groups specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
G03G 15/23 - Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
29.
Fluid jetting device, printing apparatus, and method therefor
Fluid jetting device comprising: a nozzle plate, a fluid chamber terminating in an orifice in the nozzle plate, an actuator for generating a pressure wave in a fluid in the fluid chamber to jet fluid through the orifice from the chamber, a jetting waveform generating device connected to the actuator for generating an excitation waveform comprising two separated pulses, called a jetting pulse and a quenching pulse, for respectively generating a pressure wave in the fluid in the fluid chamber leading to a fluid droplet and for substantially cancelling a pressure wave in the fluid in the fluid chamber, wherein the jetting waveform generating device is adapted to make, when jetting two consecutive fluid droplets, a first and a second droplet, the jetting pulse of the second droplet at least partially overlap the quenching pulse directly following the jetting pulse of the first droplet.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
30.
Method for printing to a recording medium with a fluid-based colorant transport or pigment transport and a surface protection in fluid-based printing to increase the presentable color space
In a method for printing to a recording medium using a fluid-based colorant transport or pigment transport (e.g. via ink or liquid toner), fluid-based printing to the recording medium is performed and a surface protection is applied to increase the robustness (e.g. abrasion resistance) in at least a printed region of the recording medium. The applied quantity per area is configured to provide an increased color space. Further, in a surface protection given fluid-based printing to a recording medium, the presentable color space is increased.
A method of calibrating a wiper position in an ink jet printer having a nozzle plate and a wiper arranged to wipe the nozzle plate, the nozzle plate having a number of nozzles each of which is in fluid communication with a pressure chamber, each pressure chamber having an actuator for exciting a pressure wave in a liquid in the pressure chamber, and a detection system arranged to detect pressure fluctuations in the pressure chamber includes adjusting the wiper to a position in which it is set against the nozzle plate; exciting a pressure wave in at least one of the pressure chambers; recording the pressure fluctuations in said at least one pressure chamber; deciding, on the basis of the detected pressure fluctuations, whether the wiper is set correctly against the nozzle that is in fluid communication with said at least one pressure chamber; and correcting the position of the wiper if necessary.
B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
In a printer, a print head carriage assembly includes a carriage arranged to move in a main scanning direction relative to a recording medium; a plurality of print heads mounted on the carriage and arranged to apply a curable marking material onto the recording medium; and a number of curing devices mounted on the carriage and disposed in positions relative to the print heads such that each print head is associated with at least one of the curing devices. The at least one of the curing devices is disposed to follow its associated print head in a distance in the main scanning direction so as to cure the ink that has been applied with that print head. The print heads are arranged in at least two rows which extend in the main scanning direction and are staggered in a sub-scanning direction normal to the main scanning direction, and the print heads are grouped such that each print head in each row has, in each other row, a counterpart print head which belongs to the same group. The curing devices include at least one separate curing device for each row and each separate curing device is associated with print heads of at least two groups. The distances between the curing devices and the associated print heads are different from group to group but are the same for all rows.
The present invention relates to a printing system (1) for cut sheets. The printing system (1) comprises a paper path comprising a loop (32, 33, 34, 35) in order to enable duplex printing on the sheets in a continuous flow of sheets in a first and second interweaving pass in the loop (32, 33, 34, 35). A controller (37) controls simplex and/or duplex printing of image data on the continuous flow of sheets. A print engine is positioned in the loop (32, 33, 34, 35) configured to dispose marking material on the sheets according to the image data. A scheduler (373) time schedules the continuous flow of sheets in an order of a plurality of actions comprising loading a sheet, printing the sheet in a first pass in the loop (32, 33, 34, 35), printing the sheet in a second pass in the loop (32, 33, 34, 35), and unloading the sheet. The scheduler (373) is configured to use a digital representation of a directed graph of vertices and edges, each vertex representing an action of the plurality of actions on a sheet of the continuous flow of sheets and each edge representing an amount of time needed for a sheet to go from a starting vertex of the edge to an ending vertex of the edge. The directed graph also represents interweaving of sheets from a first pass and a second pass. The scheduler (373) comprises a digital window mover for providing subsequent windows over the directed graph. Each window of the subsequent windows covers a finite subset of the vertices of the directed graph which correspond to actions on a number of subsequently sheets to be processed in the continuous flow of sheets, as to allow repetitive executions of an algorithm for finding a shortest path between vertices covered by the window. A window size determines for each window of the subsequent windows the amount of vertices in the window and a window step size determines which vertices are covered by the subsequent windows respectively.
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
B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
In a method for printing a plurality of print jobs on a flat bed printer, each print job specifies an image receiving area with a given shape and given dimensions where an image is to be printed on a recording medium. Each of the print jobs includes a number of sub-jobs specifying image layers to be printed in a predetermined print order, with print settings being individually assigned to each sub-job. The method includes grouping the sub-jobs by their print settings; nesting the image receiving areas of the print jobs on a flat bed of the printer; and printing the sub jobs group by group, with sub-jobs of the same group and from different print jobs being printed in common steps of scanning the flat bed. The scanning steps are performed in a scan order which preserves the print order in each print job.
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B41J 3/28 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
In a printer having first and second clamps, the deformation of a recording medium due to the web tensile force produced in the printer can be determined using the first and the second clamps. The deformation can be determined in advance of a printing process and/or during the printing operation. A print image can be adapted based on the determined deformation to compensate for the deformation of the recording medium.
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B65H 23/188 - Registering, tensioning, smoothing, or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
A method of aligning a first image on a first side of a medium and a second image on a second side of a medium, the first side and the second side facing away from each other, includes using an imaging device for printing the first image and a discrimination feature including a discriminatory edge perpendicular to an alignment direction in a coordinate system of the medium on a first side of the medium while controlling the position of the medium with respect to a coordinate system of the imaging device based on a first set of feed parameters and using the imaging device for printing the second image and a plurality of features on the second side of the medium while controlling the position of the medium in the coordinate system of the imaging device based on a second set of feed parameters, the plurality of features including a first feature, a second feature and a third feature.
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
In a method to active print nozzles of an inkjet printer including a print head having print nozzles and respective actuators associated with each of the print nozzles, one or more conveying pulses are generated to eject respective droplets of ink from the respective print nozzle; and the actuator is activated with one or more intermediate pulses having an amplitude and/or a duration that is less than an amplitude and/or a duration of the one or more conveying pulses. The one or more intermediate pulses can be configured such that no ink is ejected from the respective print nozzle with the one or more intermediate pulses.
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.
Method for operating a print server for digital high-capacity printing systems
In a print server for digital high-capacity printing systems, print jobs are received, processed with predetermined application processes, and relayed to one or more printers. A method to operate the print server can include monitoring, using a collect trigger, status parameters which describe system statuses; and triggering, using trigger logic, filters to reading additional status parameters that include process statuses of application processes executed at the print server. The triggering of the filters can be based on whether the system statuses monitored with the collect trigger represent an extraordinary or abnormal operating status.
The disclosure relates to a method for operating a computer for digital high-capacity printing systems to relay print data. The computer can include an operating system. Print data can be written to a memory and read from the memory to relay the read print data to be printed onto a recording medium at a printer. Operating system commands can be used for writing and reading. At least the operating system command for writing data can be supplemented by a delay function. The delay function can delay the operating system command for writing based on process identifier information. The process identifier information can describe a read process.
A scanning inkjet printing method comprises arranging a recording medium on a print surface; moving a carriage supporting at least one inkjet print head over the recording medium on the print surface in a scanning direction, while image-wise applying droplets of a liquid to the recording medium to form a first swath of printed dots on the recording medium; moving the recording medium and the carriage relative to each other in a transport direction, wherein the transport direction is transverse to the scanning direction; moving the carriage over the recording medium on the print surface in the scanning direction, while image-wise applying droplets of the liquid to the recording medium to form a second swath of printed dots on the recording medium; detecting a position of the first swath; determining a sub-carriage movement relative to the carriage in response to the detected position of the first swath to position the second swath relative to the first swath, wherein the sub-carriage is supported by the carriage and the movement comprises an amount of translation in the transport direction transverse to the scanning direction and an amount of rotation around a rotation axis, wherein said rotation axis is perpendicular to the print surface; and moving the sub-carriage in accordance with the determined amount of translation and the determined amount of rotation. Thus, the first and the second swath may be positioned accurately adjacent to reduce visibility of stitching inaccuracies between adjacent swaths.
A flatbed printer assembly includes a controller for controlling the movements of a gantry, a carriage support and the print head while moving over a medium support table. The controller is configured to receive a print job including a cut path intended to circumvent a piece of the recording medium, a first image intended to be printed on a front side of the piece of the recording medium, a second image intended to be printed on a back side of the piece of the recording medium, wherein at least one of the first and second image is intended to be printed at least partially in a full bleed print mode. Shapes are selected for a first alignment mark for the first image and a second alignment mark for the second image. A first location is determined on the front side of the recording medium according to the selected shape of the first alignment mark. The first location crosses the cut path. A second location on the back side of the recording medium is determined according to the selected shape of the second alignment mark. The second location crosses the cut path. A first sub-image is extracted from the first image which is intended to be printed on the first location of the first alignment mark. A second sub-image is extracted from the second image which is intended to be printed on the second location of the second alignment mark. The first sub-image is printed at the first location as being the first alignment mark. After the recording medium is turned upside down on the medium support table, the second sub-image is printed at the second location as being the second alignment mark.
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
B41J 3/28 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
A flatbed cutter assembly includes a medium support table for supporting a recording medium, the table extending in a first direction and a second direction, the first direction being perpendicular to the second direction, a gantry arranged to be moveable over the medium support table in the first direction, a carriage support movably arranged on the gantry to move over the medium support table in the second direction, a cutter configured to be coupled to the carriage support and a controller for controlling the movements of the gantry, the carriage support and the cutter while moving over the medium support table. The controller is configured to cut through the recording medium from the front side to the back side along a cut path except for a plurality of bridges along the cut path, the recording medium intended to be printed on both front and back side of the recording medium, wherein parts of each bridge which are intended to be adjacent to printed images on the front and back side of the recording medium, are removed by the cutter.
B26D 3/08 - Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
B26D 5/00 - Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
B41J 3/28 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
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
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
A printer having a carriage (10) movable along a guide beam (12) in a main scanning direction (y), and a number of print heads (14) mounted on the carriage (10), each print head having a plurality of printing elements (16), wherein the carriage (10) has at least two sub-carriages (38) each of which carries at least one of the print heads (14) and is independently guided at the guide beam (12), and the sub-carriages (38) are coupled for joint movement in the main scanning direction (y) but are movable relative to one another in a sub-scanning direction (x) normal to the main scanning direction (y).
An ink handling system for an ink jet printer includes a local ink reservoir associated with a print head assembly of the printer, a fill state sensor arranged to detect a fill state of the local ink reservoir, a pump arranged to supply ink into the local ink reservoir, and a pump controller for controlling an operation of the pump, including controlling an on/off state of the pump, on the basis of a detection result of the fill state sensor. A pump calibration system includes an ink consumption measurement system including a droplet counter for counting a number of ink droplets jetted out by the print head assembly and arranged to calculate a volume V of consumed ink on the basis of the counted number of droplets; a timer for counting an on-time T of the pump; a flow rate calculator arranged to calculate an measured ink flow rate of the pump on the basis of the ratio V/T; and a flow rate drift compensation functionality in the pump controller, the compensation functionality being configured to control the operation of the pump on the basis of the measured ink flow rate.
An inkjet printing assembly is configured for direct inkjet printing on a recording medium and for indirect inkjet printing via an intermediate medium. The inkjet printing assembly comprises a transport path for transporting a print medium. Further, a control unit is provided for selecting the print medium, wherein the print medium is may at least be a recording medium or an intermediate medium. An inkjet print station is provided and arranged along the transport path for providing droplets of a liquid on the print medium. A transfer station is provided and configured for transferring the droplets of the liquid from an intermediate medium to a recording medium. A recording medium output station is provided for receiving the printed recording medium.
B41J 2/005 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
An ejection device includes a tile made of a material having a first coefficient of thermal expansion (CTE). The tile carries a chip that forms a plurality of ejection units and is in thermal contact with the tile. The chip is mainly made of a material having a second CTE different from the first CTE, wherein each ejection unit is capable of ejecting droplets of a liquid and comprises a pressure chamber and a flexible wall delimiting the pressure chamber. The flexible wall has a deformation compliancy that depends upon at least one mechanical design parameter of the chip. In operation at a temperature different from room temperature, the ejection units have uniform ejection properties, while the compliancies of the flexible walls of at least two of the ejection units are different from one another at room temperature.
A controller to control an apparatus (e.g. a printer) can include multiple secondary sub-controllers and a main sub-controller. Each of the secondary sub-controllers can have an operator process and one or more executable control processes. Each of the control processes can be configured to exchange data with one or more other of the control processes. The main sub-controller can be communicatively coupled to the secondary sub-controllers via a data network. Each of the main and secondary sub-controllers can include at least one processor and an operating system. The respective operator processes can be configured to communicate via the data network, and the control processes of each of the secondary sub-controllers can be configured such that the control processes communicate exclusively with the operator process of their respective secondary sub-controller to communicate via the data network.
A method to increase the print quality of a printer can include determining sensor data corresponding to a print image printed by a print head of the at least one print head of the printer onto the recording medium; determining, based on the sensor data, undulation information corresponding to unevenness of the recording medium, a distance between the one or more nozzles of the print head of the printer and the recording medium varying due to the unevenness; and printing, based on the undulation information, a subsequent print image with the print head of the printer. The printer can include at least one print head including one or more nozzles that are configured to fire ink droplets onto a recording medium to generate a print image on the recording medium.
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
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 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
A print head has a tile made of a material having a first coefficient of thermal expansion (CTE). The tile carries a chip that forms a number of printing elements and is in thermal contact with the tile. The chip is mainly made of a material having a second CTE different from the first CTE. A stress relief plate is made of a material having a third CTE that is closer to the second CTE than the first CTE and is bonded to the tile with a first adhesive layer having a first thickness d1. The chip is bonded to the stress relief plate with a second adhesive layer having a second thickness d2 smaller than the first thickness d1.
The invention relates to a printing system and a method for printing images on a printed media piece (9, 91, 92, 93) by means of a printing system (100, 200). The printed media piece (9, 91, 92, 93) comprises printed images (33, 34, 39, 41, 42, 43) other than registration marks at predetermined positions. The printing system comprises a camera (10) directed towards the printed images on the printed media piece (9, 91, 92, 93) and connected to a controller (13, 8A) of the printing system (100, 200), and a print engine (18) for disposing marking material on the printed media piece (9, 91, 92, 93) in order to form images on the printed media piece (9, 91, 92, 93). The method comprising the steps of selecting a reference image (R1-R5) to be checked for presence at an arbitrary position in the printed images (33, 34, 39, 41, 42, 43) on the printed media piece(9, 91, 92, 93), selecting an instruction(613) for the addition of an additional image (A1-A5) to the reference image(R1-R5) on the printed media piece,transferring at least one digital image captured by the camera (10) from the printed media piece (9, 91, 92, 93) to the controller (13, 8A),recognizing and localizing the reference image at the arbitrary position in the printed images on the printed media piece(9, 91, 92, 93) on the basis of the at least one digital image captured by the camera (10)from the printed media piece (9, 91, 92, 93),deriving from a location of the localized reference image (R1-R5) on the printed media piece(9, 91, 92, 93) and from the instruction (613) a location of a target area on the printed media piece(9, 91, 92, 93) for printing the additional image(A1-A5), scheduling the additional image (A1-A5) for printing on the printed media piece (9, 91, 92,93) in the target area on the printed media piece (9, 91, 92, 93), and activating the print engine (18) to print the scheduled additional image (A1-A5) in the target area on the printed media piece (9, 91, 92, 93).
H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
B41J 3/28 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers
51.
Inkjet printing system and method to reduce system-dependent streaking
In a printing system and a corresponding method, different nozzles of a print head can be activated to eject a nominal ink quantity with different ejection pulses to at least partially compensate for non-uniformities between the different nozzles due to crosstalk. The compensation can reduce system-dependent streaking of the print image.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
52.
Method for printing on a plurality of sheets; an inkjet printing apparatus
A method for printing on a plurality of sheets includes the steps of: arranging the plurality of sheets on a support surface of an endless conveyor, the plurality of sheets including a first sheet and a second sheet being arranged at a sheet-to-sheet distance between one another; advancing the plurality of sheets on the support surface in a conveying direction along a print head assembly for applying droplets of ink on the sheets; providing a suction force through perforations arranged in the support surface for holding the plurality of sheets on the support surface, wherein the suction force provides an air flow through uncovered perforations present in the sheet-to-sheet distance in a print region between the print head assembly and the support surface; and forming an image by the print head assembly on each of the plurality of sheets supported on the support surface of the conveyor by applying droplets of ink. The method further includes the step of controlling the sheet-to-sheet distance in response to a dew formation attribute for indicating dew formation on the print head assembly.
B41J 2/375 - Protection arrangements against overheating
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
B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
An electronic circuit for driving an inkjet print element in an array of print elements with an electric waveform is provided. The print element includes a piezo transducer for converting the electric waveform in a mechanical displacement. The electric waveform is tunable for an individual print element. The circuit includes a common waveform generator that is connected to the piezo transducer through a first print data dependent switch for providing an electric waveform independent of the print element. The circuit further includes a waveform tuning part, dependent on the print element and the print data, for controlling a second switch that adds electric energy from a voltage source to the electric waveform. The switches are operable in either a saturation state or a blocking state to limit an amount of dissipation in the switches.
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.
Printing system for printing a plurality of images on a web and a method thereof
The invention relates to a printing system for printing a plurality of images on a web. The printing system comprises a print engine, a feeder for feeding the web to the print engine in a feed direction relative to said print engine, a receiver for receiving the printed web, a user interface configured to set a printing arrangement of the plurality of images on the web and to input the print engine, the feeder and the receiver for performing printing according to the printing arrangement by ejecting or adhering marking material on the web and a scheduling module for scheduling the plurality of images on the web.
The printing system comprises in storage a media list of media types. Each media type in the list is provided with at least one predetermined distance. The scheduling module is configured to move an image of the plurality of images in the printing arrangement from an originally planned location of the web to a new location of the web such that a distance of the new location to an end of the web, which end is closest to the originally planned location, is larger than the at least one predetermined distance. Also a method for such a printing system is revealed.
An apparatus (20) for defect (D) detection in a printing system comprises an emitter (23) for emitting a signal towards a medium (S). A sensor assembly (25) is arranged for receiving at least part of the first emission signal reflected (R) from the medium. The apparatus is arranged for identifying a deformation in the medium from the received part of the first emission signal, and for determining a medium as suitable for printing when the first emission signal is substantially prevented from reaching the sensor assembly. A medium is determined to be suitable for printing when no signal reaches the sensor assembly. When the received signal exceeds a predefined reference, the apparatus determines a sheet to be unsuitable for printing. This configuration requires no strict alignment between the emitter and the sensor assembly, and is accurate despite vibrations and the like in the printing system.
The invention relates to a printing system for printing a print job on a receiving material with receiving material characteristics according to a print job ticket. The printing system comprises a print engine for providing marking material with marking material characteristics to the receiving material in order to form at least one image defined by the print job and a controller configured to control the print engine and to provide a first estimation of an amount of receiving material needed for a print job based on the print job ticket. A digital outcome storage is configured to store first waste amounts of receiving material during printing errors of print jobs. The controller is configured to retrieve from the digital outcome storage first waste amounts of receiving material with the same receiving material characteristics as of the print job and to use the retrieved first waste amounts of receiving material for increasing of the first estimation of the amount of receiving material needed by the print job.
The invention relates to a printing system (100)and a method for printing a plurality of images (190) on a first web (181) and on a second web(182), the printing system (100) comprising a print head (110), a feed unit (120) for feeding both the first web (181) and the second web (182) simultaneously to the print head (110) in a feed direction (Y) relative said print head (110), a wrap up unit (125) for wrapping up both the first web (181) and the second web (182) simultaneously to form a first output roll (183) and a second output roll (184) respectively, a user interface (130) configured to set a printing arrangement (250, 350) of the plurality of images (190) on the first web (181) and the second web (182) and to input the print head (110), the feed unit (120) and the wrap up unit (125) for performing printing according to the printing arrangement (250) by ejecting marking material on the respective webs. The printing system further comprises a prediction module (140) for predicting a first diameter of the first output roll (185) and a second diameter of the second output roll (186) based on the printing arrangement (250, 350)). The prediction module (140) is configured to establish a difference of the predicted first diameter and the predicted second diameter, and to provide to the user interface a warning when the established difference is larger than a predetermined diameter difference threshold.
A vacuum table for a wide format printing system, wherein a medium support surface with vacuum holes therein is spaced apart from a bottom plate by a spacer array. The spacer array is formed by an integrally formed spacer structure with a first and a second longitudinal plate positioned between the bottom plate and the medium support surface. These plates comprise a plurality of air flow through-holes as well as a top support edge and a bottom support edge extending equidistantly to one another. A connection element connects the first longitudinal plates and is positioned between the bottom support plane and the top support plane. The use of longitudinal plates allows the spacer to be cheaply and easily produced by punching. The plates further offer the advantage of a low air flow resistance while maintaining a high rigidity of the spacer array.
In wide format web printing the loading of a new web medium is a cumbersome process, requiring the operator to raise a very wide flexible web from the supply roll up to the print surface. The present invention provides a simple apparatus to aid in the manual loading process. The web transport assembly of the apparatus comprises a supply unit arranged for supplying the web from a media roll to a transport path and a pick-up device comprising a pick-up surface and a holding mechanism configured for releasably holding a leading edge section of the web onto the pick-up surface, wherein the pick-up device is moveable between a first position near the supply unit for attaching the leading edge section and a second position near the print surface. The leading edge section is moved upwards towards the print surface while held by the holding mechanism.
B41J 15/04 - Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
B65H 23/188 - Registering, tensioning, smoothing, or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
B65H 23/24 - Registering, tensioning, smoothing, or guiding webs longitudinally by fluid action, e.g. to retard the running web
B65H 19/10 - Changing the web roll in unwinding mechanisms or in connection with unwinding operations
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B41J 15/16 - Means for tensioning or winding the web
60.
Ink handling unit and ink jet imaging device comprising such ink handling unit
An ink handling unit includes an ink reservoir with an integrated heat exchange channel configured for pre-heating or pre-cooling an ink feed flow entering the ink reservoir via the heat exchange channel. The heat exchange channel is in direct thermal contact with an interior space of the ink reservoir. An ink jet imaging device includes the ink handling unit. Such imaging devices are suitable to be used in highly productive ink jet processes at elevated temperatures.
A sheet handling apparatus for a printing system includes a rotary drum having an inner chamber circumferentially surrounded by an outer peripheral wall with perforations formed therein. By means of sucking an air flow through the perforations of the drum to a suction system, sheets are attracted to the peripheral wall of the drum. A stationary shutter member is positioned inside the inner chamber for blocking the flow of air through the perforations when they pass, with the rotation of the drum, through a first predetermined angular range. The shutter member includes protrusions while the rotary drum includes recesses for receiving the protrusions, such that a meandering air flow passage is formed between the shutter member and the rotary drum. As such, friction between the rotary drum and the stationary shutter member is reduced, thereby reducing the power consumption of the suction system.
A vacuum table for a wide format printing system, wherein a medium support surface with vacuum holes therein is spaced apart from a bottom plate by a spacer array. The spacer array is formed by an integrally formed spacer structure with a first and a second longitudinal plate positioned between the bottom plate and the medium support surface. These plates comprise a plurality of air flow through-holes as well as a top support edge and a bottom support edge extending equidistantly to one another. A connection element connects the first longitudinal plates and is positioned between the bottom support plane and the top support plane.The use of longitudinal plates allows the spacer to be cheaply and easily produced by punching. The plates further offer the advantage of a low air flow resistance while maintaining a high rigidity of the spacer array.
A printing system includes a print station disposed at a sheet transport path, a feed section arranged to feed media sheets of different media types into the transport path so as to be fed sequentially to the print station, and a controller arranged to receive print instructions concerning images to be printed, to schedule a sequence of the media sheets, and to control the feed section and the print station such that each image is printed on a sheet of a media type that has been specified for that image in the print instructions. A sensor is arranged at the transport path for detecting a quality condition of the sheets being fed to the print station, and the controller is adapted to receive a quality signal from the sensor and, when the quality of a sheet is found to be insufficient, to skip that sheet and to reroute the corresponding image to another scheduled sheet that is compatible with the print instructions.
B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B65H 7/06 - Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
B65H 5/26 - Duplicate, alternate, selective, or coacting feeds
B65H 29/60 - Article switches or diverters diverting the stream into alternative paths
B65H 29/62 - Article switches or diverters diverting faulty articles from the main stream
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
In a method for controlling a property of a liquid droplet generated in an inkjet print head, the method includes determining a target viscosity range;determining a liquid viscosity of a liquid arranged in the inkjet print head;maintaining a temperature of the liquid arranged in the inkjet print head constant, if the liquid viscosity is within the target viscosity range;adjusting a temperature of the liquid arranged in the inkjet print head to adjust the liquid viscosity in order to bring the liquid viscosity within the target viscosity range, if the liquid viscosity in step b is not within the target viscosity range.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
An inkjet print head comprises a fluid channel, the fluid channel including a pressure chamber; a piezo actuator including an active piezo stack and a membrane, the active piezo stack being provided at a surface of the membrane and the membrane forming a flexible wall of the pressure chamber, and a cavity having a cavity dimension determining a wall dimension of the membrane. The method of manufacturing such a print head includes selecting a desired actuator compliance; manufacturing a first print head layer including the piezo actuator; determining at least one actual actuator property of the piezo-actuator; determining a desired wall dimension based on the actual actuator property such that the combination of the piezo actuator and the membrane having the desired wall dimension provides for the desired actuator compliance; and manufacturing a second print head layer including the cavity.
H01L 41/22 - Processes or apparatus specially adapted for the assembly, manufacture or treatment of piezo-electric or electrostrictive devices or of parts thereof
A method of managing jobs in a workflow, wherein job specifications of jobs to be processed are stored on a digital management server (12), and a list (20) of jobs waiting for being processed and options for selecting a job from the list and editing or processing the job are presented to a user on a user interface (14), characterized in that the following steps are performed when a job (24) selected from the list (20) requires an editing operation that the user refuses to perform: the user designating, on the user interface (14), a second instance (18) for performing the required editing operation, which results in a message being sent from the job management server (12) to that instance (18); the job management server (12) marking the job (24) as locked, which, while the job remains in the list (20), prevents at least one processing operation from being performed on the job; - the job management server (12) providing the second instance (18) access to the job specifications of the selected job (24) for editing the same; and when it is confirmed that the editing operation has been accomplished, the job management server (12) unlocking the job (24).
A method is provided for forming an image (22) on a recording medium (14) in a printer (10), the printer (10) comprising a print head assembly for applying a curable ink on a recording medium (14) to form the image (22), a transport path arranged for moving the recording medium (14) in a transport direction (x) along the print head assembly and a curing system (20); said curing system (20) comprising a curing source, which curing source is arranged extending over the transport path in the transverse direction (y); the method comprising the steps of: moving the recording medium (14) through the transport path in a step-wise movement in the transport direction (x) along the print head assembly and the curing system (20); applying the curable ink on the recording medium (14) by the print head assembly to form the image (22); and curing the curable ink, which is applied on the recording medium (14), by the curing source in a curing zone (26) on the recording medium (14), the curing zone (26) extending over the transport path in a transverse direction (y), the transverse direction (y) being substantially perpendicular to the transport direction (x); wherein the curing step comprises moving the curing zone (26) along the transport direction (x) through the transport path in response to the step-wise movement of the recording medium (14).
A method for scheduling a depletion of a supply material in a printing system including a print engine capable of printing at a settable print velocity while using the supply material, a control unit for controlling a print job queue comprising at least one print job scheduled to be printed by means of a scheduling scheme while using the supply material, a supply material output holder for holding the supply material, and a user interface for interacting with a user of the printing system. The method includes determining a plurality of moments in time that the supply material output holder is full, and simultaneously scheduling for each determined moment in time of the plurality of moments in time a depletion event of emptying the supply material output holder in the scheduling scheme. The plurality of moments in time is determined by taking into account the total planned usage of the supply material according to print job specifications of the at least one print job scheduled in the print job queue and a capacity of the supply material output holder with respect to the properties of the supply material. Each of the determined moments in time is established on the basis of the settable print velocity of the printing system with respect to the at least one print job in the print job queue.
A sheet conveyor is provided for transporting a sheet. The sheet conveyor includes a supplying conveyor, a receiving conveyor and a sheet guidance unit. The receiving conveyor includes a support surface arranged for supporting the sheet on a contact side of the sheet and an attraction unit arranged for attracting the sheet to the support surface. The supplying conveyor includes a transport belt being arranged for advancing the sheet in a transport direction along a transport path towards the support surface of the receiving conveyor; the sheet having two side edge portions relative to the transport path. The sheet guidance unit is arranged at a downstream end of the transport path for guiding the sheet towards the receiving conveyor, wherein said sheet guidance unit includes a lifting element arranged for lifting both side edge portions of the sheet away from the support surface while a middle portion of the sheet in between both side edge portions is guided towards the support surface.
A method for attributing an amount of resource consumption to an individual printed image that is printed in a printer comprising a print job controller and a print engine, wherein the print job controller is configured to compile a print job that comprises at least two images to be printed, the print job controller comprising an estimation section arranged to estimate a respective amount of resource consumption for each of the at least two images on the basis of print data that define the images, the method comprising the steps of: a) compiling a print job with at least two images; b) printing at least a part of each of the at least two images while monitoring a total amount of resource consumption; c) estimating the amount of resource consumption for the printed part of each of the at least two images on the basis of the print data; and d) proportioning the monitored total amount in proportion to the estimated amounts.
A method of editing a print job to be printed on a flatbed printer including a flatbed surface for placing a piece of media to be printed upon, the flatbed surface having a vacuum zone connected to a vacuum source for attracting the piece of media to the flatbed surface, is performed on a job editor including a processor and a display. The processor performs the steps of: reading vacuum zone data specifying at least a size of the vacuum zone; constructing and displaying an image of the vacuum zone on the basis of the vacuum zone data; and superposing, on the display, an image to be printed and the image of the vacuum zone.
B41J 3/28 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
72.
Printing system for printing on a substantially planar surface of a 3D-object and a method for printing thereof
A printing system for printing on a substantially planar surface of a 3D-object includes a printer for printing on the planar surface of the 3D-object and a controller configured to control printing of the printer. The printing system further includes a mask generation module configured to generate a mask having the shape of the planar surface from a 3D-model of the 3D-object and to provide the controller with the mask to prevent printing outside the planar surface according to the mask.
B41F 17/24 - Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on flat surfaces of polyhedral articles
B41F 17/30 - Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on curved surfaces of essentially spherical, or part-spherical, articles
B41J 3/407 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
The present invention relates to a method of printing a print job by an image reproduction system. The print job specifies a printing step on an image receiving medium and a finishing step in or on the image receiving medium. The method comprises the steps of receiving the print job by the image reproduction system and receiving a trigger by a controller of the image reproduction system that the finishing step is not to be performed. In such a case for a digital image comprised in print job data of the print job, at least one digital finishing visualization image of a predetermined visual appearance of a result of the finishing step in or on the image receiving medium is obtained as well as a position of the digital image for merging the obtained at least one digital finishing visualization image with the digital image. The digital image is updated by merging the obtained at least one digital finishing visualization image with the digital image at the obtained position. The updated digital image is printed by the image reproduction system.
B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers
A method is provided for controlling a web in a printing apparatus The printing apparatus includes a transport assembly for moving the web through a transport path along a printing unit for printing an image onto a print area of the web. The method includes feeding the web from a supply roll through the transport path to the transport assembly; and switching the printing apparatus to a ready-to-print mode, wherein the printing unit does not print an image on the web and the web is maintained ready to be printed on. In a printing mode after the ready-to print mode, the following steps are performed: moving the web through the transport path in a transport direction along the printing unit by the transport assembly; and printing the image onto the print area of the web by the printing unit. The image is printed by applying an image material, which solidifies on the web during the printing step. The ready-to-print mode includes the step of: operating the transport assembly to prevent a deformation of the print area of the web in the transport path, while maintaining the web in the ready-to-print mode. The web is maintained ready to print while preventing a deformation of the print area of the web in the transport path.
B41F 23/04 - Devices for treating the surfaces of sheets, webs or other articles in connection with printing by heat drying, by cooling, by applying powders
B41J 15/16 - Means for tensioning or winding the web
B65H 23/188 - Registering, tensioning, smoothing, or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
B65H 23/192 - Registering, tensioning, smoothing, or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web motor-controlled
B65H 23/32 - Arrangements for turning or reversing webs
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
In a method for high speed printing of web-based media, a medium is pulled along a media transport path to a pulling transport mechanism. The orientation of the medium with respect to the media transport path is sensed and this orientation is compared to a reference orientation to detect an orientation error. If an orientation error is detected, one or more of the following steps is performed: adjusting a print job for an image to be printed on the web medium; adjusting the transport speed; emitting a communication signal; and stopping the pulling transport mechanism and the image forming unit. It is the insight of the inventor that productivity may be increased by allowing a “tight winding” printing system to start printing at relatively high speed and reduce this speed only when significantly large deviations in the orientation of the web are detected.
The present invention relates to a radiation curable ink composition comprising a gellant and a gel accelerator. The present invention further relates to an ink set comprising such ink composition. The present invention further relates to a method for making such ink composition and a printing method using such ink composition.
C09D 11/54 - Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
C09D 11/10 - Printing inks based on artificial resins
C08K 5/09 - Carboxylic acids; Metal salts thereof; Anhydrides thereof
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
A printing system for printing a plurality of images (190) in a first web (181) and in a second web (182), the printing system comprising: a) a print head; b) feed means for feeding both the first web (181) and the second web (182) simultaneously to the print head in a feed direction (Y) relative said print head; c) a user interface configured to set a printing arrangement of the plurality of images (190) in the first web (181) and the second web (182) and to input the print head and the feed means for performing printing according to the printing arrangement; wherein the printing system further comprises a print-pause module for stopping printing of the printing arrangement, the print-pause module being configured to: - provide to the user interface a print-pause arrangement (361) in which a print-pause (362) is arranged in the printing arrangement upstream the feed direction (Y) with respect to both the print head and a first image (C) whose printing is being performed in the first web (181) when the print-pause module is selected; and - cooperate with the user interface to input the print head and the feed means according to the print-pause arrangement (361) to stop printing once printing of said first image (C) is complete.
The invention relates to a computer implemented method of job programming comprising the steps of • using a processor to assemble a printable file based on more than two reference pages of an input file and a plurality of print instructions; • including printer readable instructions in the printable file to print more than one copy of a reference page of the more than two reference pages. The method further comprises • grouping a first set of reference pages of the input file into a first group based on a first plurality of print instructions; • using a processor to assemble a first part of the printable file based on the first group and the first plurality of print instructions; • grouping a second set of reference pages of the input file into a second group based on a second plurality of print instructions; • using a processor to assemble a second part of the printable file based on the second group and the second plurality of print instructions; • including printer readable instructions in the printable file to direct printed pages corresponding to the printer readable instructions to print more than one copy of the reference page to a common stack, to direct printed pages corresponding to the first part of the printable file to the common stack and to direct printed pages corresponding the second part of the printable file to the common stack.
A roll to roll printing method in which a web of a recording medium is withdrawn from a first roll, a number of images are printed on the web and the printed web is wound on a second roll, wherein a representation of the printed images is printed on a part of the web which is to form a trailing end of the web on the second roll.
In a drying system for a printing system, a plurality of dryers can be arranged along a drying route to dry a recording medium. The plurality of dryers can including multiple resistive heating elements configured to dry the recording medium. The dryers can be supplied via two or more supply lines with an alternating current having a sequence of alternating positive and negative half-waves. A controller of the drying system can be coupled to the dryers and can couple the dryers uniformly on average with the at least two supply lines given positive and negative half-waves based on a nominal temperature curve along the drying route. The controller can jointly couple the resistive heating elements of a corresponding dryer with a multiphase supply grid or jointly decouple the resistive heating elements of the dryer with the multiphase supply grid during a half-wave.
A flat bed printer includes a flat bed, a print head assembly, a drive system arranged to move the print head assembly over the bed, a controller arranged to control operations of the print head assembly and the drive system, and an obstacle detection system arranged to detect obstacles in a region of movement of the print head assembly. The controller has a split-bed mode of operation in which the movements of the print head assembly are confined to only a part of the bed while another part of the bed is left idle, and the controller is arranged to calculate, when an obstacle is detected in the split-bed mode of operation, an expected time to collision after which the print head assembly will collide with the obstacle.
B41J 29/38 - Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
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 3/28 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
82.
Duplex printing system for cut sheets and a method therefore
The present invention relates to a printing system for cut sheets. The printing system comprises a control unit for controlling the printing of image data on a plurality of sheets which comprise at least one speciality sheet intended to be one-sided printed and at least one duplex sheet intended to be two-sided printed. The control unit schedules the plurality of sheets in a printing order. A paper path of the printing system comprises a duplex printing loop, a first turn station arranged in the duplex printing loop for turning a sheet of the plurality if both sides of the sheet are scheduled to be printed in two passes along a print engine arranged in the duplex printing loop and configured to dispose marking material on the sheets according to the image data, in two passes, one side per pass, and a second turn station arranged in an output section for turning the sheet before laying the sheet off in an output holder of the output section. Speciality sheets and simplex sheets in a duplex print job are treated in a special way to avoid productivity loss.
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
B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
83.
REPROGRAPHIC APPARATUS COMPRISING A USER INTERFACE GENERATING DEVICE AND METHOD THEREFOR
Reprographic controller for providing reprographic commands to a reprographic engine, the reprographic controller having a reprographic setting, the reprographic controller comprising: a communication device for communicating with a computing device running a device driver; and user interface screen generation means connected to the communication device, the user interface screen generation means arranged to generate and return a user interface screen comprising a user interface widget for setting the reprographic setting upon receiving a user interface screen request through the communication device from the device driver; the reprographic controller further arranged to: receive from the device driver through the communication device: a value for the reprographic setting; and a reprographic job; and the reprographic controller further comprising: a job processing device for processing the reprographic job taking into account the received value for the reprographic setting.
The present invention relates to a method for printing a plurality of voxels of an object in a plurality of passes of a print head of a printing system over a substrate, each pass having a movement direction of the print head relative to the substrate while ejecting marking material from the print head towards the substrate, each voxel having a position in the object, the method comprising the steps of for each voxel of the object selecting a movement direction of the print head based on the position of the voxel in the object, selecting at least one pass in which the voxel will be printed, the at least one pass having a movement direction which corresponds to the selected movement direction of the print head, and printing the voxel in the selected at least one pass. The present invention also relates to a printing system configured to execute the method.
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
A method for printing a plurality of print jobs on a flat bed printer includes automatically grouping the print jobs into a plurality of consecutive container jobs, and for each container job automatically creating a digital plan of the flat bed, automatically defining a mask with cutting information according to the created plan, receiving the defined mask on the flat bed, receiving the media pieces on the flat bed positioned in according with the received mask, and unattended printing of the print jobs on the media pieces by the flat bed printer making use of the received mask. The automatic grouping includes gathering the group of print jobs due to the print job characteristics of each of the print jobs and/or the flat bed characteristics of the flat bed and ordering the consecutive container jobs due to the print job characteristics of each of the print jobs and/or the flat bed characteristics of the flat bed.
An inkjet print head includes an ejection unit having a liquid chamber for holding an amount of liquid, a electromechanical transducer operatively coupled to the liquid chamber for generating a pressure wave in the amount of liquid and a nozzle in fluid communication with the liquid chamber for enabling a droplet of the amount of liquid to be ejected through the nozzle. A method for detecting an operating state of the ejection unit includes the consecutive steps of actuating the electromechanical transducer to generate a pressure wave in the liquid; actuating the electromechanical transducer to suppress a residual pressure wave in the liquid; sensing an amplitude of the residual pressure wave in the liquid; and based on the result of the sensing step determining that the ejection unit is (i) in an operative state if the amplitude of the residual pressure wave is below a threshold or (ii) in a malfunctioning state if the amplitude of the residual pressure wave is above the threshold.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
A print head assembly including a print head unit, a cooling duct, and a blower arranged to pass a gaseous cooling medium through the cooling duct. The cooling duct has an elongated closed hollow cross-section bounded on at least one side by a flat wall. The print head unit is attached to the flat wall outside of the cooling duct such that the print head unit is cooled by the gaseous medium passing through the cooling duct via thermal contact through the flat wall of the cooling duct.
A method is provided for cancelling an electric crosstalk contribution in a monitoring signal from a monitored electro-mechanical transducer in a device comprising at least three electro-mechanical transducers. The crosstalk contribution results from an actuation of other transducers than the monitored transducer. The method comprises the steps of: (a) selecting a second transducer, associated with the first, monitored transducer, wherein the electric crosstalk caused by an actuation of a third transducer is equal in the first and second transducer; (b) actuating the first transducer and not acutating the second transducer; (c) simultaneously measuring a monitoring signal from the first transducer and the second transducer; (d) subtracting the two monitoring signals to obtain a clean monitoring signal from the first transducer.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
An ink jet printer comprising: - a number of print heads (10) each of which has a first port (12) and a second port (16), - an ink supply unit (20), - a drain line (22), - a first manifold (14) connecting the ink supply unit (20) to the first port (12) of each print head (10), and - a second manifold (18) connected to the second port (16) of each print head (10) and connectable to the drain line (22), characterized by a valve system (24, 26) arranged to disconnect the second manifold (18) from the drain line (22) and to connect it to the ink supply unit (20).
The present invention relates to a printing system and method for improving ink absorption in the print substrate by preventing evaporation. The printing system comprises a conditioned transport module (10) arranged for transporting a printed print substrate (2) from a (conditioned) image formation module (1) to a drying/fixation module (20).
The present invention relates to a printer control system and a method for controlling the printing of an object on a support in a number of pass images on top of each other. The object has a surface of varying height. The printer control system comprises a user interface having a display device and arranged to visualize in a window on the display device a preview image before printing of the object. The preview image comprises a representation of the surface of the object. The printer control system further comprises an analysis section which is configured to analyze the pass images in order to predict before printing the object a location of a contouring artefact at the surface of the object, and a transformation section which is configured to transform the predicted location into a contour representation to be added to the preview image. The contour representation is visually distinguishable from the representation of the surface of the object in the preview image.
B33Y 50/00 - Data acquisition or data processing for additive manufacturing
H04N 1/409 - Edge or detail enhancement; Noise or error suppression
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
B29C 64/386 - Data acquisition or data processing for additive manufacturing
The present invention relates to a radiation curable ink composition including a gellant. The present invention further relates to an ink set having such ink composition. The present invention further relates to a method for making such ink composition and a printing method using such ink composition.
C07C 69/76 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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
93.
Method for two-sided printing of digital images from a roll in a roll-to-roll printing system
A method for two-sided printing of digital images on a roll of media by means of a roll-to-roll system is provided. The roll-to-roll system includes a digital image queue including entries for digital images to be printed on the roll. For each digital image to be printed on a first side of the roll, a first entry is registered in the digital image queue, which entry includes at least one digital item identifying the digital image and digital items of print properties of the digital image. For each digital image to be printed on a second side of the roll, a second entry is registered in the digital image queue, which entry includes at least one digital item identifying the digital image and digital items of print properties of the digital image. For each first digital image to be printed on the first side of the roll, a first location on the first side of the roll is established at which first location the first digital image is intended to be printed, a second digital image is established which is intended to be printed at a second location on the second side of the roll, the second location being the backside of the first location. The first entry of the first digital image in the digital image queue is then linked to the second entry of the second digital image in the digital image queue by means of a linking digital item in the digital image queue. The first digital images are printed on the first side of the roll according to the digital image queue, the one-sided printed roll is received in the input holder, and the second digital images are printed on the second side of the roll according to the corresponding linking digital items in the digital image queue.
Belt conveyor system comprising: an endless mesh belt, the belt having a mesh structure and having edge areas at the lateral sides, a drive mechanism drivable by a drive motor to rotate the belt, and a steering roller for steering the lateral position of the belt, wherein an edge area comprises a band running substantially parallel to the lateral sides, the band comprising an elastic filler being provided inside the mesh structure, the elastic filler being discernible from the mesh structure, and wherein the belt conveyor system further comprises a band position detector for detecting the lateral position of the band.
B65H 7/14 - Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
B65H 5/22 - Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
B65H 29/24 - Delivering or advancing articles from machines; Advancing articles to or into piles by air-blast or suction apparatus
B65H 7/02 - Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
The present invention relates to a radiation curable ink composition comprising two ester compounds. The invention further relates to a method for making such ink composition and a printing method using such ink composition.
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
C09D 11/326 - Pigment inks characterised by the pigment dispersant
C09D 11/03 - Printing inks characterised by features other than the chemical nature of the binder
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
The present invention relates to a method for circulating a liquid in a printer to prevent settling of dispersed particles in the liquid anywhere in said printer by controlling the recirculation of liquid for each printhead in said printer.
A recording substrate treatment apparatus includes transporting mechanism for transporting a sheet of a recording substrate through a first chamber in the interior space of the recording substrate treatment apparatus; a first suction device arranged for removing a gaseous medium from the first chamber; and an impingement device, arranged for providing a first flow of the gaseous medium at the outer surface of the transporting mechanism. The first suction device is fluidly connected to the impingement device, such that in operation the impingement device receives a first flow of the gaseous medium from the first suction device. With this arrangement, the impingement flow is balanced with an air flow directly extracted from the first chamber of the recording substrate treatment apparatus. A printing system including such a recording substrate treatment apparatus and a method of drying a recording substrate using such a recording substrate recording apparatus are also disclosed.
The present invention relates to a radiation curable ink composition comprising an ester compound, that is suitable for printing high gloss images. The invention further relates to a method for making such ink composition and a printing method using such ink composition.
C08F 2/46 - Polymerisation initiated by wave energy or particle radiation
C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
C08G 61/04 - Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
C09D 11/03 - Printing inks characterised by features other than the chemical nature of the binder
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
The present invention relates to a radiation curable ink composition comprising a gellant. The present invention further relates to an ink set comprising such ink composition. The present invention further relates to a method for making such ink composition and a printing method using such ink composition.
G01D 11/00 - Component parts of measuring arrangements not specially adapted for a specific variable
C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
A gas impingement device includes a first surface including a pattern of a plurality of gas outlets, the pattern including a number of substantially parallel rows of gas outlets, the rows arranged in a direction, which direction is at a skew angle α with a front edge of the first surface of the gas impingement device. A recording substrate treatment apparatus and a printing system including such a gas impingement device and a method of drying a recording substrate by using the gas impingement device are also disclosed.
G03G 15/20 - Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
B41F 23/04 - Devices for treating the surfaces of sheets, webs or other articles in connection with printing by heat drying, by cooling, by applying powders
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
