Abstract: Disclosed is a printhead for a printer that includes a plurality of ejection chip units. Each ejection chip unit of the plurality of ejection chip units is configured to eject at least one fluid. The printhead further includes a plurality of supporting units. Each supporting unit of the plurality of supporting units is fluidly coupled with a corresponding ejection chip unit. The each supporting unit includes a plurality of trenches adapted to receive an adhesive to facilitate attachment of the each supporting unit with the corresponding ejection chip unit. Furthermore, the printhead includes a base unit fluidly coupled with the each supporting unit of the plurality of supporting units. The base unit is adapted to provide the at least one fluid to the each ejection chip unit through a corresponding to supporting unit. Further disclosed is a method for assembling the printhead.

Abstract: A liquid ejecting apparatus includes a platen disposed with a gap from a nozzle plate of a recording head and supporting a recording medium in ejecting, and an platen application voltage generating unit generating an electric field having a direction different from an electric field generated between an individual external electrode of a piezoelectric vibrator and nozzles, between the nozzle plate and the platen, in which the intensity of the electric field generated by the applied-to-plate voltage generating unit is set in between the maximum electric field intensity and the minimum electric field intensity between the individual external electrode and the nozzles.

Abstract: A micro-fluid ejection head has multiple ejection chips joined adjacently to create a lengthy array across a media to-be-imaged. The chips have fluid firing elements arranged adjacently along corresponding ones of fluid vias skewed variously or not to enable seamless stitching of printed images from the adjacent firing elements. The firing elements are energized to eject fluid and individual ones are spaced according to colors or fluid types. Overlapping firing elements serve redundancy efforts during imaging for reliable print quality. Variable chips sizes and shapes, including chevrons, are disclosed as are relationships between differently colored fluid vias. Skew angles range variously each with noted advantages. Bond pads and overlying encapsulation materials are still other features as are metallization lines for distributing power to ones of firing elements. Singulating chips from larger wafers provide still further embodiments as does increased usage of the wafer.

Abstract: An inkjet printer that has a print zone, a media path extending through the print zone along a paper axis, a printhead carriage with a plurality of printhead mounting sites for mounting a plurality of printhead modules adjacent the print zone such that the printhead modules collectively span the media path and a plurality of interfaces for supplying ink to, and receiving ink from each of the printhead modules respectively.

Abstract: An inkjet printer includes: a print engine having a cradle for receiving a removable printhead cartridge; an ink inlet manifold for supplying ink to a printhead cartridge; and an ink outlet manifold for receiving ink from the printhead cartridge. The printhead cartridge includes: a cartridge body configured for user insertion and removal from the ink jet printer; a pagewidth printhead housed in the cartridge body, the pagewidth printhead defining an array of nozzles for ejecting ink onto a media substrate; a first fluid coupling in fluid communication with the pagewidth printhead; and a second fluid coupling in fluid communication with the pagewidth printhead. The first and second fluid couplings establish fluid communication with the ink inlet manifold and ink outlet manifold respectively, upon insertion of the cartridge body in the cradle.

Abstract: Disclosed is a printing apparatus that performs printing by using inks of plural colors including a white color, which includes a first image forming unit that forms a first image, and a second image forming unit that forms a second image such that at least a part of the second image overlaps the first image. The second image forming unit forms at least a part of a section of the second image, which overlaps the first image, by using only a white ink, and forms at least a part of a section of the second image, which does not overlap the first image, by using inks of a white color and at least one color other than the white color.

Abstract: A fluid ejection apparatus includes a printhead having a substrate. The substrate includes a nozzle face having a width direction and a length direction. The nozzle face includes a set of four columns of nozzles oriented in a column direction substantially along the width direction of the nozzle face, and the nozzles in each column are positioned on a straight line along the column. A spacing between two adjacent columns of the four adjacent columns is different than a spacing between another two adjacent columns of the four adjacent columns. In some implementations, a controller can control timing of ejection of fluid droplets from the nozzles to deposit lines of fluid droplets on a medium, and the medium can travel relative to the nozzle face.

Abstract: A printing apparatus includes: a first nozzle which ejects a first ink used to print an image on a medium and cured by irradiation of light; a pre-curing light source which emits a pre-curing light to dots formed as the first ink ejected from the first nozzle is landed onto the medium; a second nozzle which ejects a second ink used to coat a surface of the medium and cured by irradiation of light onto the medium after being irradiated by the light from the pre-curing light source; and a main-curing light source which emits a main-curing light to the medium, wherein the irradiation energy of the light emitted to a unit area of the medium from the pre-curing light source is changed according to whether the second ink is ejected from the second nozzle.

Abstract: A wide-array inkjet printhead assembly with die carriers includes a backbone which delivers fluid through a manifold with a number of openings. The openings are spaced apart according to a opening pitch. A plurality of inkjet die includes trenches with a trench pitch which is smaller than the opening pitch. A plurality of die carriers include a plurality of oblique tapered channels, with one end of the oblique tapered channels having pitch matching the opening pitch and interfacing with the backbone and the opposite end of the oblique tapered channels having a pitch matching the trench pitch and interfacing with the inkjet die. A method for assembling a wide-array inkjet printhead assembly is also described.

Abstract: A method for density error correction is disclosed. In one embodiment, the method includes a) calculating an average density error for at least one row of an image considering density errors for printhead elements employed to print the at least one row, and a number of passes that the printhead elements will utilize to print the at least one row, b) calculating a density error correction value for the at least one row considering the average density error, and c) applying the density error correction value to adjust ink flow from the printhead elements while printing the at least one row.

Abstract: A supporting section is disposed to confront an ejection surface and supports a recording medium. A first tank is mounted on a first-tank mount section. A liquid conveying section conveys liquid to a liquid ejecting head. A receiving section receives liquid ejected from the liquid ejecting head. A waste-liquid conveying section conveys liquid to the waste-liquid tank. A first casing holds the liquid ejecting head, the first-tank mount section, and the liquid conveying section. A second casing holds the supporting section, the receiving section, the waste-liquid tank, and the waste-liquid conveying section. The first casing is connected with the second casing such that the first casing is movable relative to the second casing. The first casing takes a first position at which the ejection surface confronts the supporting section and a second position at which the ejection surface is farther away from the supporting section than at the first position.

Abstract: A two pass print mode method and apparatus limits wind-related print defects produced during printing, utilizing a reciprocating carrier of a printer carrying a printhead having an array of columns of actuator-fired fluid-jetting nozzles along a bi-directional scanning path. Due to instructions from a controller, printing proceeds along an initial partial swath on a print medium during a first pass along the scanning path by firing actuators associated with a first plurality of segments of a given column of nozzles. Then, printing proceeds along a final partial swath on the print medium during a second pass along the scanning path by firing actuators associated with a second plurality of segments of the given column of nozzles. Each segment of nozzles of the first and second pluralities includes more than one consecutive nozzle so that gaps are created in the partial swath printing accommodating wind-related effects without causing wind-related print defects.

Abstract: A faulty discharge detection technique to detect faulty discharge of nozzles in an ink jet recording apparatus includes recording a test pattern onto a recording medium so as to include at least two or more reference marks in the width direction of the recording medium, reading the test pattern by a scanner unit, determining whether or not there is a faulty discharge image from image data read in the test pattern reading, and calculating faulty discharge nozzle position to, in the event that there is a faulty discharge image in the image data, detect the reference marks and detect the position of nozzles in a faulty discharge state from the position of the faulty discharge image in the image data.

Abstract: Printers and duplexers are described herein. An example duplexer for a printer includes a print substrate path to guide a print substrate and a chamber to collect a fluid.

Abstract: A liquid ejection head module comprising: first and second head units disposed in a first direction, each of the first and second head units having first and second rows of liquid ejecting heads that comprises a plurality of nozzles disposed in the first direction, the first and second rows of liquid ejecting heads being disposed in a second direction crossing the first direction; a first concavity and convexity on edge of the first head unit; a second convexity and concavity on edge of the second head unit, the edge of the second head unit facing to the edge of the first head unit, at least one of the liquid ejecting heads being disposed at each of the first and second convexities, wherein the first concavity and convexity and the second convexity and concavity are disposed in mating relation to one another.

Abstract: A printhead assembly has a plurality of printhead modules, each with a plurality of printhead integrated circuits (ICs). The printhead modules also have a print engine controller for controlling the operation of the plurality of printhead ICs. An elongate support frame supports the printhead modules and a connector arrangement is supported by the end plate. The connector has a pair of holes, a first connector extending from the body portion between the holes and a second connector configured to engage with the holes.

Abstract: When a gradation mask is used to distribute image data to be recorded by overlapping portions in an overlapping head, color unevenness is generated in an image recorded by the overlapping portions due to a displacement in impact positions caused by an assembly error. As a result, accurate colorimetric measurement of patches recorded by the overlapping portion cannot be performed. To solve such a problem, a distribution ratio by which the image data is distributed to the overlapping portions is set to be approximately constant when recording a test pattern for performing color correction, as compared to when normally recording the image.

Abstract: A stationary pagewidth inkjet printhead is comprised of a plurality of printhead integrated circuits butted end-on-end across the pagewidth. The printhead includes one or more nozzle rows extending along a longitudinal axis of the printhead, each nozzle row comprising a plurality of nozzles. One or more of the nozzles are configured to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis.

Abstract: An apparatus includes a printing unit which is disposed in a housing and configured to form an image on a sheet, an lid attached to the housing by a hinge mechanism, and a camera which is attached to the lid and configured to read an image on a document while the lid is open, wherein the sheet having the image formed by the printing unit is discharged on the lid, and when the lid is opened, the camera can read the document which is placed at a reading position below the camera.

Abstract: A data processing device that processes image data to be supplied to a recording head is provided. The device includes a first storage section configured to store image data for at least a single line; and a processor that reads image data corresponding to each of discharge nozzles of each of discharge groups from the image data of a single line stored in the first storage section and causes the read image data to be stored in a continuous storage region of a second storage section for storing image data to be supplied to the recording head.

Abstract: The present invention provides a recording apparatus including recording heads each including a plurality of nozzle arrays that are arranged so as to overlap, wherein overlapping portions of the recording heads for two different colors are separated from each other with a distance therebetween in an array direction of nozzles.

Abstract: An ink for ink-jet recording apparatuses includes water, a pigment dispersion, an organic solvent, and a humectant. The pigment dispersion includes a pigment and a resin having a weight average molecular weight of from 35,000 to 140,000. An adsorbed resin proportion determined from the mass of a total amount of resin in the ink and the amount of resin separated from pigment among the resin is at least 0.97. And, the ink contains from 3% to 15% by mass of C1-C4 monoalkyl ether of polyhydric alcohol based on the mass of the ink as the organic solvent.

Abstract: In a method or apparatus for controlling a printing process in an inkjet printing apparatus that has multiple print heads, a line scan is generated to print a print line on a recording material. The individual print heads are individually controlled with an offset relative to the line scan to eject printing ink, print data prepared for the printing being stored in a memory device upstream of the print heads. Print data units to be printed by the print heads are transferred from the memory device to the respective print heads in a same order with which they are printed. The order with which the print data units are transferred is controlled by request commands entered into a FIFO memory, each request command identifying a print head in the order of the transfer of the print data units corresponds to an order of the request commands in the FIFO memory.

Abstract: A method enables an operator to detect misalignment of printheads that eject clear ink in an inkjet printer. The method prints a first test pattern with a first color of ink and then prints a second test pattern of clear ink on top of the first test pattern. The ink of the first and the second test patterns is then spread to enable the clear ink to be dispersed in interstitial spaces in the ink of the first color. An operator is then able to detect the spatial relationship of predetermined marks in the second test pattern to predetermined marks in the first test pattern. The predetermined marks of the first and the second test patterns are arranged to enable an operator to detect a misalignment distance and the inkjet printer uses the misalignment distance entered by the operator to adjust the alignment of the printheads that eject clear ink.

Abstract: In a print bar system or method in which at least one print bar is positioned in a printing position, first and second drive and guidance units are provided for the print bar and which each have an adjustable guidance unit and a first coupling unit. The print bar has print bar receptacles with adjustable positioning pins. The guidance units and the print bar receptacles are designed such that upon insertion of the print bar into the drive and guidance units the print bar receptacles rest in a floating bearing on the guidance units and are centered and arrested after displacement of the guidance units in the drive and guidance units such that the print bar is positioned into the printing position in the drive and guidance units and wherein the positioning pins engage in the first coupling units.

Abstract: A structure for an inkjet printhead is disclosed. The printhead structure has an elongate support structure for supporting a printhead integrated circuit, and ink conduits formed in the elongate support structure for supplying ink to an array of nozzles of the printhead integrated circuit. Each ink conduit includes cavities distributed along a roof of the ink conduit. An opening to each cavity has an upstream edge and a downstream edge. The upstream edge contacts the ink before the downstream edge during initial priming of the ink conduits from an ink supply. The upstream edge has a transition face between the ink conduit and the cavity interior, the transition face being configured to inhibit ink from filling the cavity by capillary action during initial priming of the ink conduit. This causes gas to be trapped within the cavity. The gas acts to compress pressure pulses in the ink.

Abstract: An image processing method of creating image data for forming an image on a recording medium by ejecting liquid droplets from a plurality of nozzles of a recording head onto the recording medium while causing relative movement of the recording medium and the recording head, includes: a correction coefficient storage step of determining correction coefficients for ejection failure correction based on difference of landing interference patterns of a plurality of types, and storing the correction coefficients for ejection failure correction according to the landing interference patterns, in a storage unit; an ejection failure nozzle position information acquisition step of acquiring ejection failure nozzle position information and a correction processing step of performing a correction calculation on input image data using a corresponding correction coefficient obtained by referring to the correction coefficients for ejection failure correction according to the ejection failure nozzle position information.

Abstract: A printhead integrated circuit includes a substrate having a plurality of inkjet nozzles assemblies formed on a surface of the substrate. The substrate contains drive circuitry for supplying power to the nozzle assemblies. Each nozzle assembly includes a nozzle chamber for containing ink, the nozzle chamber having a roof and sidewalls extending from the roof to the surface of said substrate, the roof having a nozzle opening defined therein; an actuator for ejecting ink through the nozzle opening; a pair of electrodes positioned at the surface of the substrate; and a pair of connector posts encapsulated within the sidewalls, each connector post electrically connecting a respective electrode to the actuator. Each connector post extends linearly from a respective electrode to the actuator.

Abstract: In a liquid jetting head unit, a tank case in a head tank includes a first connection path connecting a downstream chamber of the tank case and a discharge path, and a second connection path connecting an upstream chamber of the tank case and the discharge path. The discharge path includes a filter member provided between a first part of the discharge path connected to the first connection path and a second part of the discharge path connected to the second connection path.

Abstract: A wide format printer that has an ink supply, an accumulator reservoir, a valve coupling the accumulator reservoir to the ink supply, the valve being configured to open when the ink level in the accumulator reservoir reaches a lower limit of a predetermined ink level range, and close when the ink level in the accumulator reservoir reaches an upper limit of the ink level range and, a plurality of printheads collectively spanning a paper path more than 432 mm (17 inches) wide, each of the printheads being in fluid communication with the accumulator reservoir and each of the printheads having nozzles for ejecting ink onto media. During printing, the accumulator reservoir is fixed relative to the printheads such that hydrostatic ink pressure at the nozzles is generated by the elevation of the ink level in the accumulator reservoir relative to the elevation of the of the nozzles.

Abstract: A liquid ejection head includes: a first and a second common liquid chamber formed in a substrate; a first nozzle array in which short and long nozzles are connected to the first common liquid chamber and alternately arranged on one side of the chamber; a second nozzle array in which short and long nozzles are connected to the first common liquid chamber and alternately arranged on the other side; a third nozzle array in which short and long nozzles are connected to the second common liquid chamber and alternately arranged on one side of the chamber; and a fourth nozzle array in which short and long nozzles are connected to the second common liquid chamber and alternately arranged on the other side; wherein the long and short nozzles formed on the one side and the long and short nozzles formed on the other side are disposed within a pitch P.

Abstract: A feed mechanism for a wide format printer is provided having a supply spool for supplying media web to a printhead, a take-up spool for receiving the web after printing, a take-up motor connected to the take-up spool, a take-up control system for controlling the take-up motor torque, a drive roller system positioned between the supply and take-up spools, a drive motor connected to the drive roller system, and a braking motor connected to the supply spool for generating tension in the web between the supply spool and the drive roller system. The take-up, drive and braking motors are separate motors and are separately connected to the take-up spool, drive roller system and supply spool, respectively. The web fed from the drive roller system to the take-up spool is maintained under substantially constant tension by regulating the torque of the take-up motor using the take-up control system.

Abstract: Provided are an inkjet recording device and an inkjet recording method for providing an image wherein concentration nonuniformity is reduced with less ink bleed between inks of different colors, in high speed multicolor printing of single path system. In the device and the method, a conditional expression of 0.6?R/R0?0.9 is satisfied, where, R is a dot radius of a second ink jetted on a first ink which is jetted on the recording medium and semi-cured by a beam applied, and R0 is a dot radius of the second ink directly jetted on the recording medium.

Abstract: A supporting section is disposed to confront an ejection surface and supports a recording medium. A first tank is mounted on a first-tank mount section. A liquid conveying section conveys liquid to a liquid ejecting head. A receiving section receives liquid ejected from the liquid ejecting head. A waste-liquid conveying section conveys liquid to the waste-liquid tank. A first casing holds the liquid ejecting head, the first-tank mount section, and the liquid conveying section. A second casing holds the supporting section, the receiving section, the waste-liquid tank, and the waste-liquid conveying section. The first casing is connected with the second casing such that the first casing is movable relative to the second casing. The first casing takes a first position at which the ejection surface confronts the supporting section and a second position at which the ejection surface is farther away from the supporting section than at the first position.

Abstract: The ink jet recording method includes performing printing by depositing droplets of an ink composition ejected from the ink ejection nozzles on a recording medium transported in the direction perpendicular to the nozzle alignment direction in such a manner that the droplets ejected from at least one ink ejection nozzle located at an end of each of ink jet heads adjacent to each other in the direction perpendicular to the nozzle alignment direction are deposited one on the other. The volume of droplet ejected from the ink ejection nozzle at the end of the ink jet head is smaller than the volume of ink droplet ejected from each of the other ink ejection nozzles of the ink jet head, and the ink composition has a yield value of 0.50 to 2.00 mPa.

Abstract: A wide format printer that has a print zone, a media path more than 432 mm (17 inches) wide and extending through the print zone along a paper axis, a printhead carriage with a plurality of printhead mounting sites for mounting a plurality of printhead modules adjacent the print zone such that the printhead modules collectively span the media path, the printhead carriage having a long side extending transverse to the paper axis, the long side having access formations for ink conduits and a plurality of interfaces for connection to the ink conduits to supply ink to each of the printhead modules respectively. All ink for the plurality of printhead modules is supplied by ink conduits extending through the access formations on the long side of the printhead carriage.

Abstract: An image forming apparatus includes a common array base member; and plural head modules each formed of a module base member and plural heads configured to discharge droplets arranged in an array on the module base member. The plural head modules are attached on the common array base member. The heads of at least two of the head modules discharge liquid droplets of the same color. The at least two of the head modules are positioned relative to a same reference point provided by a reference member on the common array base member.

Abstract: This aims to provide an inkjet recording apparatus which prevents a beading or a color bleeding in a recording system using a line head, and an inkjet recording method. The inkjet recording apparatus comprises an ink line head equipped with nozzle rows having a plurality of nozzles arranged at a predetermined pitch for discharging inks containing coloring materials, and a fixing liquid line head equipped with nozzle rows having a plurality of nozzles arranged at a predetermined pitch for discharging fixing liquids to enhance the fixtures of the inks to a recording medium. The inkjet recording apparatus performs the records by discharging the inks and the fixing liquids from the individual line heads to the recording medium while moving the recording medium and the individual line heads relatively in predetermined directions.

Abstract: A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. Each nozzle is configurable to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis, and each nozzle has an associated primary dot position. The printhead is configured to compensate for a dead nozzle by printing from a selected functioning nozzle positioned in a same nozzle row as the dead nozzle. The selected functioning nozzle is configured to fire some ink droplets at the primary dot position associated with the dead nozzle and to fire some ink droplets at its own primary dot position.

Abstract: A wide-array inkjet printhead assembly with die carriers includes a backbone which delivers fluid through a manifold with a number of openings. The openings are spaced apart according to a opening pitch. A plurality of inkjet die includes trenches with a trench pitch which is smaller than the opening pitch. A plurality of die carriers include a plurality of oblique tapered channels, with one end of the oblique tapered channels having pitch matching the opening pitch and interfacing with the backbone and the opposite end of the oblique tapered channels having a pitch matching the trench pitch and interfacing with the inkjet die. A method for assembling a wide-array inkjet printhead assembly is also described.

Abstract: A print head control device 4 in an ink jet printer IJP includes a print head drive board 42c3, a PCIe, and an image processing computer 42c. The print head drive board 42c3 is configured by a circuit between the PCIe and the print head drive board 42c3,the circuit having an interface function and a print head drive function integrated therein. This circuit includes an FPGA configured to perform a rearrangement processing such that assigned page data is matched to alignment of print heads 50. Further, a device driver 42c7 which is control software for the print head drive board 42c3 performs an internal transfer processing of the assigned page data to the print head drive board 42c3.

Abstract: A micro-fluid ejection head has multiple ejection chips joined adjacently to create a lengthy array across a media to-be-imaged. The chips have fluid firing elements arranged to seamlessly stitch together fluid ejections from adjacent chips. Each chip aligns with other chips at peripheral regions having edge tolerances closer than elsewhere along the periphery. The tolerances result from both etching and dicing during chip singulation. Etching occurs at the areas of alignment. Dicing occurs elsewhere. Etching techniques include deep reactive ion etching or wet etching. It cuts a planar periphery through an entire thickness of the wafer. The etching may also occur simultaneously with etching a fluid via. Dicing techniques include blade, laser or ion beam. It cuts an entire remainder of the periphery connecting the portions already etched to free single chips from the wafer. Edge tolerances, planar shapes, dicing lines, etch patterns, and wafer layout provide still further embodiments.

Abstract: A liquid drop discharge device provides a head unit 420 which discharges filter element material relative to each of various colors of color filters. The head unit 420 is composed of an ink jet heads which are arranged on one end of a print substrate plate having a shape of rectangular card and head devices 433 which are arranged on the other end of the print substrate plate comprising connectors 441. The head devices 433 are aligned in two rows, as two groups, in a staggered arrangement so that a portion on which the connectors 441 are aligned in one of the two rows does not face to the same portion of the other in the two rows and protrudes outside of the print substrate plate. The head unit 420 discharges the filter element material onto predetermined portions in a superimposing manner while shifting along a direction which intersects to a direction along which the head devices 433 are arranged.

Abstract: A liquid ejecting head is provided. The liquid injecting head includes two reservoirs. The reservoirs include expansion chambers arranged in parallel in a direction in which pressure chambers are arranged. Each reservoir includes multiple expansion chambers formed so that an inner wall surface of one of the reservoirs protrudes toward the other reservoir. Each expansion chamber having a liquid introduction opening. Constriction portions are formed so that the inner wall surface of one reservoir protrudes at locations that oppose the expansion chambers of the other reservoir. The constriction portions narrow the flow channel width in the direction intersecting with the direction in which the pressure chambers are arranged. The liquid introduction openings provided in the expansion chambers disposed on either side of the constriction portion are formed in locations that are at different distances from the constriction portion and have different cross-sectional areas.

Abstract: A printer control unit (3) is described for controlling the size of droplets emitted by a nozzle of a printhead (8) in an inkjet printer. The control unit (3) receives information about an image to be printed by the printer, for example from a raster image processor (5), the information including droplet size information regarding the size of droplet required to be emitted by the nozzle to print the image. Print parameter information for printing the image is determined on the basis of the received droplet size information, the print parameter information including information for use in setting the printer such that droplets emitted by the nozzle during the printing of the image have the required droplet size.

Abstract: A method of generating half tone print data is disclosed. The method starts by determining an extent of overlap caused by temperature variations of overlapping end portions of a pair of consecutive printhead segments. A dither value is also generated from a dither matrix, and the dither value is combined with the extent of overlap to produce an output value. A mathematical operation is performed on continuous tone print data based on the output value, to produce the half tone print data.

Abstract: A micro-fluid ejection head has multiple ejection chips joined adjacently to create a lengthy array across a media to-be-imaged. The chips have fluid firing elements arranged along multiple fluid vias skewed variously to enable seamless stitching of fluid ejections. The firing elements are energized to eject fluid and individual ones are spaced according to colors or fluid types. Overlapping firing elements serve redundancy efforts during imaging for reliable print quality. Variable chips sizes and shapes, including chevrons, are disclosed as are relationships between differently colored fluid vias. Skew angles range variously each with noted advantages. Singulating chips from larger wafers provide still further embodiments as does increased usage of the wafer.

Abstract: A liquid jetting apparatus includes: a plurality of liquid jet heads each of which has a nozzle surface in which a plurality of nozzles are formed to align in one direction, a retention member which retains the plurality of liquid jet heads in a state of being arranged along one plane, a transport mechanism which transports a medium in a transport direction along the one plane, and a displacement mechanism which displaces the retention member in a specified direction toward one side along a direction intersecting the nozzle surfaces by curving the retention member or rotating the same in a rotation direction when the retention member extends due to temperature change on the one plane in an intersectant direction intersecting the transport direction.

Abstract: A printhead is provided having an assembly of printhead modules. Each printhead module has a support defining fluid chambers, a fluid distributor on the support, and an integrated circuit on the distributor so that fluid in the chambers is distributed to the fluid ejection nozzles of the integrated circuit by the distributor. The support and distributor of each printhead module are shaped to define complementary formations on opposite sides of that printhead module so that the printhead modules are mated together in an angled fashion with the integrated circuits of the mated printhead modules abutting together and diagonally overlapping to define at least one row of fluid ejection nozzles of the printhead.

Abstract: A printhead assembly extending in pagewidth direction includes an elongate support beam; an elongate shell at least partially enclosing and restraining the support beam; and a plurality of printhead integrated circuits mounted to the support beam and substantially aligned with one another in the pagewidth direction. The support beam has formed therein at least one printing fluid reservoir arranged in fluid communication with the plurality of printhead integrated circuits.