A printhead die assembly includes first and second printhead die. Each of the first and second die has a respective first surface including ink dispensing devices constructed thereon, and a respective second surface opposite the first surface. Each of the first and second die includes nozzles for the ink dispensing devices. The first and second die are positioned so that the second surface of the first die faces the second surface of the second die, and the nozzles of the first die are aligned with the nozzles of the second die.
In one example, a media support (12) includes a sheet (20) of suction cups (40) in which each suction cup (40) has a port through which air may be evacuated from the cup. In another example, a detachable cover for a vacuum table or platen (18) includes: a sheet (20) having a flat front surface, a flat back surface and multiple suction cups (40) arranged across the front surface of the sheet (20). Each suction cup (40) has a port to the back surface of the sheet to connect to a corresponding vacuum hole in the table or platen (18) when the cover is attached to the table or platen (18).
In one example, a media support (12) includes a sheet (20) of elongated suction cups (40, 42). In another example, a media support (12) includes an arrangement of elongated and/or circular suction cups (40, 42) in which the density of the suction cups varies between different parts of the support (12).
In one example, a media support includes a platen (18) and multiple suction cups (20) in the platen (18). Each suction cup (20) in the platen (18) has a port through which air may be evacuated from the cup (20).
The present disclosure relates to a method of printing a radiation-curable ink composition on a substrate. A radiation-curable ink composition is deposited onto a substrate. The radiation-curable ink composition comprises a photoinitiator in an amount of not more than about 4.5 weight %. The deposited ink composition is irradiated with UV radiation. The irradiated ink composition is heated to a temperature of at least about 75 degrees C. The UV radiation is from an LED source or is centred at a wavelength selected from the group consisting of 375 nm, about 385 nm and about 395 nm.
An inkjet printing method includes providing an inkjet composition, which includes a radiation curable monomer or oligomer, a photo-initiator, and an inhibitor present in an amount sufficient to prevent full curing of the radiation curable monomer or oligomer during an initial exposure to a curing energy. First drops of the inkjet composition are deposited onto a substrate. The curing energy is selected such that it is sufficient to substantially consume the inhibitor. The first drops are exposed to the curing energy, whereby the first drops retain substantially a same surface tension as a liquid drop of the inkjet composition. Second drops of the inkjet composition are deposited adjacent to the first drops. The first and second drops are exposed to the curing energy, whereby the first drops are at least partially cured and the second drops retain substantially the same surface tension as a liquid drop of the inkjet composition.
A method of cross-talk suppression and a system therein are disclosed. The method may include receiving a print pulse to simultaneously fire ink from an array of adjacent nozzles of an inkjet printhead; and actuating groups of three or more adjacent nozzles of said array of nozzles with a time delay between actuations of said three or more nozzles of the groups.
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 photo-curable ink composition obtained upon mixing a first printing liquid with a second printing liquid. The first printing liquid includes, at least, UV curable polyurethane dispersions and colorant; the second printing liquid includes, at least, hydrophobic radiation-curable monomers, water-soluble or water-miscible radiation curable monomers and photo -initiators. Also disclosed herein is a set of printing liquids including said first and second printing liquid; an inkjet printing system and a method for forming a printed article.
According to one example, there is provided a method of processing an image. The method comprises obtaining image data representing an image to be printed, determining, from the image data, pixel locations on a substrate where ink is intended to be deposited and pixel locations where no ink is intended to be deposited, and modifying the image data to define varnish to be deposited at at least some of those substrate pixel locations determined as where no ink is intended to be deposited.
An ink-jet printing system (10) includes a generator (20) for in situ generation of a component of an inert atmosphere (an atmosphere that is depleted of oxygen). The system also includes a curing zone (16) in which the generated component (for example nitrogen or carbon dioxide) is distributable over ink that had been deposited on a substrate (12), and in which the ink is exposable to a curing agent (for example UV radiation).
A method of maintaining an inkjet print head device (10) includes applying a first set of maintenance signals by a control unit (15) to a first set of actuators (11a) of an inkjet print head device. The first set of maintenance signals applied by the control unit causes movement of the first set of actuators to move meniscuses of a first set of fluid channels (12a) in fluid communication with the first set of actuators, respectively, between an expansion state and a retraction state without fluid droplets ejecting from the first set of fluid channels. The method also includes applying a second set of maintenance signals by the control unit to the first set of actuators of the inkjet print head device. The second set of maintenance signals applied by the control unit cause movement thereof to circulate fluid in the first set of fluid channels without the fluid droplets ejecting from the first set of fluid channels.
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 photo-curable ink composition including UV curable polyurethane dispersions, water, photo- initiator, colorant and hydrophobic radiation-curable monomers. Also disclosed herein is a method for forming a printed article and an inkjet printing system using said photo-curable ink composition.
A photo-curable ink composition including colorant, water, photo-initiator, UV curable polyurethane dispersions, hydrophobic radiation-curable monomers and water-soluble or water- miscible radiation curable monomers. Also disclosed herein is a method for forming a printed article and an inkjet printing system using said photo-curable ink composition.
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
A device, method and system for receiving and submitting a substrate (610a, 610b), the device including an XY table (620), the XY table (620) having one or a plurality of sides for accepting a substrate (610a, 610b), a set of manipulators (630) coupled to the XY table (620), the manipulators (630) configured to accept and register the substrate (610a, 610b) from the one or plurality of sides of the XY table (620), and a set of retractable dividers (640a, 640b) on the XY table (620) configurable to register one or a plurality of substrates (610a, 610b) concurrently.
An LED illumination source may include one or a plurality of LED illumination modules (100), each LED illumination module (100) comprising a plurality of LED clusters (1041( 1042,1043... 104n), wherein each LED cluster (1041( 1042,1043... 104n), comprises an LED array which is rotated by an angle of rotation with respect to an axis which is parallel to a predefined direction of sweep (124).
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
A vacuum hole array including a dense array (11) of vacuum holes (3) and a sparse array (12) of vacuum holes (3). A constant pitch of the sparse array (12) being equal to a constant pitch of the dense array (12) multiplied by two or a higher integer. The vaccuum hole array can be part of a media support for large format media. The vacuum pumps can work more efficiently since the number of vacuum holes (3) remaining open during use can be made relatively low if the media sheet is placed appropriately, while curling, wrinkling and unwanted displacement near the media sheet edge are prevented.
According to one example, there is provided a method of processing an image to be printed. The method comprises obtaining image data for an image to be printed, determining from the image data a defined spot colour, generating, from the image data, an image mask corresponding to areas of the image having the defined spot colour, and generating printer control data to control a printer to a print non-masked areas of the image on a substrate having the defined spot colour.
A photo-curable ink composition including an acrylic polymer or copolymer, a mono-functional monomer,a multi-functional monomer, a photo-initiator and a pigment. Also disclosed herein is a method for forming a printed article and an inkjet printing system using said photo-curable ink composition.
A fluid applicator mounting device includes a main body to removeably receive a fluid applicator module. The main body includes a common fluid channel having a main input port, a main output port, a supplemental input port to provide fluid to the fluid applicator module, and a supplemental output port to output fluid from the fluid applicator module. The fluid applicator mounting device also includes an input fin member disposed inside the common fluid channel and arranged proximate to the supplemental input port to guide fluid to the fluid applicator module. The fluid applicator mounting device also includes an output fin member disposed inside the common fluid channel and arranged proximate to the supplemental output port to guide fluid from the fluid applicator module away from the supplemental output port.
In one embodiment, an actuator connected to a printhead structure is activated with a waveform to cause vibration of the structure sufficient to move fluid within a printhead channel adjacent to the structure and not cause the fluid to eject from the channel during a nonprinting period. In another embodiment, a first pulse module applies a pulse at a printhead structure at a combination of voltage, duration, and frequency to cause shaking of printhead structure to move fluid within a printhead channel adjacent to the structure without ejecting the fluid from the channel during a nonprinting period. In another embodiment, an actuator connected to a printhead structure is activated during a nonprinting period to pulse the structure to move fluid within a printhead channel adjacent to the structure without causing the fluid to be expelled from the channel.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
22.
PRINTING A DOUBLE-SIDED IMAGE AND GENERATING PRINTER CONTROL DATA FOR PRINTING DOUBLE-SIDED IMAGE
According to one example of the present invention there is provided apparatus for generating control data to control an ink jet printer to print a double-sided image on a single side of a substantially transparent substrate. The apparatus comprises a processor for receiving image data of a first and a second image, a printhead control data generator to generate, from the first image, first image printhead control data, and to generate, from the second image, second image printhead control data, and a covering layer printhead control data generator to generate covering layer printhead control data.
According to one example there is provided apparatus for curing ink on a substrate. The apparatus comprises a substrate support, a curing sheet positionable above the substrate support to create a gap between a substrate on the substrate support and the curing sheet. The apparatus further comprises an oxygen-depletion mechanism for reducing the oxygen level in the gap and an ultra-violet, UV, radiation source to apply UV radiation through the curing sheet to a substrate on the substrate support.
A photo-curable ink composition including an acrylic polymer or copolymer, a vinyl ester component, a multifunctional monomer, a photoinitiator and a pigment. Also disclosed herein is a method for forming a printed article and an ink-jet ink printing system using said photo-curable ink composition.
According to one example of the present invention, there is provided a method of generating data to control the ejection of ink drops from a plurality of arrays of printhead nozzles of a printing system. In the printing system one of the arrays of nozzles is configured to eject a first ink of a first colour having a first colourant density. Another one of the arrays of nozzles is configured to eject a second ink of the first colour having a second colourant density. Each array of nozzles is capable of making ink marks having a plurality of different ink mark volumes on a media. The method comprises obtaining image data for a single colour channel and generating, from the image data, multi-level screen data describing, for each of the first and second inks, the ink mark volume to be made by the array of printhead nozzles at each screen location.
According to one example of the present invention there is provided a method of printing, with a printer, an image on a substrate, the printer comprising a substrate support. The method comprises obtaining an image to be printed, determining an offset position of a substrate positioned on the substrate support relative to a predetermined reference printing position, and controlling the printer to print the image to be printed at the determined offset position.
A mill base composition includes a compound comprising a divinyl ester of a dicarboxylic acid, a dispersing agent, and a pigment. The divinyl ester of the carboxylic acid includes from 2 to about 8 carbon atoms. The mill base composition is subjected to milling with milling beads to produce a milled mill base composition that functions as a pigment concentrate that may be added to an ink vehicle to form an ink composition suitable for use in inkjet ink devices. The milled mill base composition is particularly suited for UV curable ink compositions. A UV curable ink composition includes the pigment concentrate, one or more UV curable monomers, and one or more UV initiators.
C09B 67/00 - Influencing the physical, e.g. the dyeing or printing, properties of dyestuffs without chemical reaction, e.g. by treating with solventsProcess features in the making of dyestuff preparationsDyestuff preparations of a special physical nature, e.g. tablets, films
An aqueous ink composition includes at least 60% water by weight, an acrylic latex polymer suspension, a polyurethane suspension, a polyethylene wax suspension, and an organic solvent that comprises about 10% to about 30% of the ink composition. In methods for preparing an aqueous ink composition, a combination of the aforementioned components is provided. The combination is subjected to conditions under which the ink composition becomes substantially uniform and then the combination is subjected to filtration.
A vacuum source is coupled to an ink reservoir to establish a backpressure to prevent ink from dripping from a printhead. The vacuum source is also coupled to a backpressure capacitor so that a first liquid-gas interface rises to a first level. When the vacuum source is decoupled, the liquid-gas interface falls to a second level so as to maintain sufficient backpressure on said ink to prevent it from dripping from the inkjet printhead.
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