A printing method comprises advancing a media to be printed towards a printing unit of a printing device by means of a media advance unit, detecting a position of the media relative to the printing unit, and providing a corresponding position sensor signal, and activating the printing unit to print on a predetermined portion of the media in accordance with the position sensor signal and a timing signal provided by a clock unit.
B41J 29/393 - Devices for controlling or analysing the entire machine
B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
B41J 3/407 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
In some examples, a system includes a printhead including a printer fluid nozzle, an air valve in fluid communication with a channel of the nozzle to: (1) create back pressure in the channel when the air valve is closed and printer fluid is ejected through the nozzle and (2) release back pressure in the channel when the air valve is open, an ejector to eject printer fluid through the nozzle to form a meniscus of printer fluid in the channel when the air valve is closed, a pressure sensor to measure pressure within the channel, and an indicator in electrical communication with the pressure sensor. The indicator can, for example, indicate whether there is an air leak in the channel by determining whether the pressure in the channel is within a predetermined pressure range after a predetermined idle time following the formation of the meniscus in the nozzle.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
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 centered at a wavelength selected from the group consisting of 375 nm, about 385 nm and about 395 nm.
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
B41M 7/00 - After-treatment of printed works, e.g. heating, irradiating
Pallet conveyors for printers are disclosed. In example implementations a pallet conveyor for a printer comprises a track, a train pallet to circulate on the track and a wagon pallet to circulate on the track towed by the train pallet. The train and wagon pallets may support a print substrate.
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B65G 37/00 - Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
B65H 5/04 - Feeding articles separated from pilesFeeding articles to machines by movable tables or carriages
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.
C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
B41M 7/00 - After-treatment of printed works, e.g. heating, irradiating
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 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.
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.
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 11/326 - Pigment inks characterised by the pigment dispersant
Printing apparatus comprise a printing table, a loader to load sheets of print media to the printing table, and a moveable tray on which at least one row of media sheets can be placed, the tray being moveable between a position in which it is accessible to an operator for placing media sheets thereon and another position in which at least part of the tray is accessible to the loader for picking the print media sheets but inaccessible to the operator.
B41J 13/00 - Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
B65H 5/04 - Feeding articles separated from pilesFeeding articles to machines by movable tables or carriages
B65H 5/22 - Feeding articles separated from pilesFeeding articles to machines by air-blast or suction device
B65H 1/04 - Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile
B65H 1/08 - Supports or magazines for piles from which articles are to be separated with means for advancing the pile to present the articles to a separating device
B65H 1/26 - Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile
B65H 3/08 - Separating articles from piles using pneumatic force
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
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.
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.
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 11/102 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
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 printhead assembly includes a printbar beam member and a plurality of printheads disposed thereon. The printbar beam member includes a printbar longitudinal axis. Each one of the printheads includes a printhead longitudinal axis and a row of nozzles arranged parallel to the printhead longitudinal axis. The plurality of printheads are arranged on the printbar beam member in a manner in which each respective printhead longitudinal axis is traverse to the printbar longitudinal axis.
A printhead assembly includes a printbar beam member, a printhead, and a first eccentric pin. The printbar beam member includes a beam surface and a first cavity disposed through the beam surface. The printhead includes a printhead surface and a second cavity disposed through the printhead surface. The first eccentric pin may be inserted into the first cavity and the second cavity to couple the printhead to the printbar beam member. The first eccentric pin may rotate to adjust a position of the printhead relative to the printbar beam member along a first axis along the beam surface.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
B41J 2/155 - Arrangement thereof for line printing
B41J 25/00 - Actions or mechanisms not otherwise provided for
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.
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 LED illumination source may include one or a plurality of LED illumination modules, each LED illumination module comprising a plurality of LED clusters, wherein each LED cluster comprises a LED array which is rotated by an angle of rotation with respect to an axis which is parallel to a predefined direction of sweep.
A device, method and system for receiving and submitting a substrate, the device including an XY table, the XY table having one or a plurality of sides for accepting a substrate, a set of manipulators coupled to the XY table, the manipulators configured to accept and register the substrate from the one or plurality of sides of the XY table, and a set of retractable dividers on the XY table configurable to register one or a plurality of substrates concurrently.
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
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.
C09D 11/32 - Inkjet printing inks characterised by colouring agents
C08J 3/28 - Treatment 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
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 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
A pallet conveyor includes a conveyor track to guide pallets, and a service station deployed on the conveyor track, the service station to perform a service operation in the pallet conveyor.
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B65G 37/00 - Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
B65G 17/48 - Controlling attitudes of load-carriers during movement
B65G 17/12 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
B65G 17/06 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
Printing apparatus comprise a printing table, a loader to load sheets of print media to the printing table, and a moveable tray on which at least one row of media sheets can be placed, the tray being moveable between a position in which it is accessible to an operator for placing media sheets thereon and another position in which at least part of the tray is accessible to the loader for picking the print media sheets but inaccessible to the operator.
B65H 3/12 - Suction bands, belts, or tables moving relatively to the pile
B65H 1/04 - Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile
B65H 1/08 - Supports or magazines for piles from which articles are to be separated with means for advancing the pile to present the articles to a separating device
B65H 3/08 - Separating articles from piles using pneumatic force
B65H 1/26 - Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile
B65H 5/04 - Feeding articles separated from pilesFeeding articles to machines by movable tables or carriages
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).
B41J 2/205 - Ink jet for printing a discrete number of tones
B41J 2/515 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements line printer type
B05B 12/12 - Arrangements for controlling deliveryArrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target responsive to conditions of ambient medium or target, e.g. humidity, temperature
B05B 3/00 - Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
B05B 15/04 - Control of spray area, e.g. masking, side shields; Means for collection or re-use of excess material (B05B 1/28 takes precedence)
B05D 1/02 - Processes for applying liquids or other fluent materials performed by spraying
B05D 1/36 - Successively applying liquids or other fluent materials, e.g. without intermediate treatment
B05B 12/04 - Arrangements for controlling deliveryArrangements for controlling the spray area for controlling time, or sequence, of delivery for sequential operation or multiple outlets
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
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
An apparatus and method for use in printing an image in a multipass printing device, the method comprising obtaining information identifying two or more defective nozzles in a nozzle array, determining that a line of a printed image is associated with more than a first predetermined number of defective nozzles based on the obtained information identifying two or more defective nozzles and selected step sizes, and identifying adjusted step sizes such that no more than the first predetermined number of defective nozzles is associated with any line of the printed image.
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).
B41J 3/407 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
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
According to one example there is provided a method of printing an image on a substrate using a printing system having a printhead. The method comprises forming, using ink from the printing system, a spittoon on the substrate, printing the image on the substrate, and whilst printing the image, ejecting ink from a printhead into the formed spittoon during a printhead maintenance operation.
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 method includes moving an assembly of printheads with a bidirectional lateral motion. A direction of the lateral motion is substantially perpendicular to, and the lateral motion is concurrent with, a longitudinal motion of a substrate relative to the printhead assembly. Nozzles of the printheads are arranged in two rows that are oriented substantially parallel to the direction of the lateral motion. The longitudinal motion and the lateral motion are coordinated such that a nozzle in one of the rows and a nozzle in the other of the rows trace a common path on the substrate.
An apparatus includes a tank for holding a fluid for delivery to a printhead, the tank being open to the atmosphere. A manifold enables the fluid to flow from the tank to the printhead, a height of the manifold being lower than a level of the fluid in the tank when the fluid is flowing from the tank to the printhead. A siphon has a lower end of the siphon that is connectable to the manifold. An upper end of the siphon extends above the level of the fluid and is openable to the atmosphere. A height of a segment of the siphon between the upper end and the lower end is lower than the height of the manifold.
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.
A method system and device, to align a substrate on a surface, the device including a first intake and a second intake where the first intake is configured to accept a first fluid and the second intake is configured to accept a second fluid. The first fluid is channeled into the device to vertically move the device a distance, and the second fluid calibrated and channeled into the nozzle, the nozzle having a focusing outlet, and where the fluids are configured to exert a force to facilitate the alignment of the substrate on the surface.
H01L 21/68 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for positioning, orientation or alignment
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.
According to one example of the present invention there is provided a printer for a printing on a roll of substrate. The printer comprises a substrate support for receiving a roll of substrate, a drive mechanism for driving substrate from a roll of substrate when installed on the substrate support through a print writing module, and a substrate edge trimming module for trimming the longitudinal edges of a substrate prior to the substrate passing through the print writing module.
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
49.
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 of the present invention there is provided a printing system for printing on a substrate supported on a substrate support. The printing system comprises a plurality of substrate support sections each having an array of orifices selectively in fluid communication with a vacuum source. A controller is configured to apply vacuum pressure from the vacuum source to different ones of the substrate support sections in accordance with a vacuum activation program.
A printer is disclosed. The printer prints a swath of ink across the paper in a first direction. The printer moves the media with respect to the print head in a backwards direction and prints a second swath of ink across the media in a second opposite direction. The printer then moves the media with respect to the print head in a forwards direction by a different amount. The printer then repeats printing the two swaths as describe above.
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.
In one example, a pallet conveyor includes: a forward track to guide pallets from an upstream part of the forward track to a downstream part of the forward track; a return track; and a pallet transfer device configured to simultaneously (1) continuously receive pallets from a downstream part of the return track and give pallets to the upstream part of the forward track and (2) continuously receive pallets from the downstream part of the forward track and give pallets to an upstream part of the return track.
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B65G 37/00 - Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
B65G 17/48 - Controlling attitudes of load-carriers during movement
B65G 17/12 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
B65G 17/06 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
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.
In one implementation, an encoder assembly for a printer includes: an encoder scale having indicators thereon for determining a printing parameter; an encoder sensor for sensing indicators on the scale; and a mechanism configured to alternately attach an encoder part (either the scale or the sensor) to the substrate and detach the encoder part from the substrate. In another implementation, a method includes: attaching an encoder part to a print substrate, the encoder part being either an encoder scale or an encoder sensor; the sensor sensing indicators on the scale while advancing the substrate with the encoder part attached; and detaching the encoder part from the substrate.
G05B 19/29 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an absolute digital measuring device for point-to-point control
Print arrangement, comprising a first roll, a transport surface, a nip between the first roll and the transport surface through which, at least during printing, a substrate is threaded, a drive system arranged to change a width of the nip, and a lateral stretch member arranged to engage a side of the substrate. The first roll comprises a two coaxially aligned roll segments of similar diameters for rolling over the substrate, with a distance in between.
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.
Disclosed is an inkjet print head array with improved ink supply system. The system includes an ink manifold having at least two ink supply channels, a plurality of print head modules disposed along ink supply channels and forming the array, with each of the print head modules having at least two ink inlet ports. The ports are in fluid communication with the ink supply channels. Each of the ink supply channels supplies ink to each of the ports at a different flow rate, although the resulting ink supply flow rate is equal for each print head module.
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