Abstract: A method for pen drop weight calibration includes altering an image prior to printing based on the difference in printing performance of a first pen and a second pen to produce altered image data, the first pen and the second pen being disposed in the same printer. The altered image data is then printed with the printer.

Abstract: An image recording apparatus includes: a recording head having a plurality of recording elements; a conveying device; a density information acquisition device; a characteristic computation device; a characteristic storage device; a comparison device which compares recording information with stored characteristic information; a density correction value calculation device which calculates a correction value for recording control according to the comparison result; a density correction value modification device which performs modification of the correction value; and an image correction device which corrects data of an image outputted by the plurality of recording elements according to the correction value calculated by the density correction value calculation device and the correction value modified by the density correction value modification device.

Abstract: A liquid droplet ejection apparatus comprising: a conveyor portion that conveys a recording medium to a liquid droplet ejection region by the rotational force of a drive roll; liquid droplet ejection heads that eject liquid droplets onto the recording medium conveyed to the liquid droplet ejection region by the conveyor portion; a feed portion that feeds the recording medium to the conveyor portion at a predetermined feed timing; a detection portion that detects a rotational position of the drive roll; and a control portion that controls the feed timing of the feed portion based on the rotational position that the detection portion has detected, so that when the drive roll reaches a predetermined rotational position, the control portion causes the recording medium to be conveyed to the liquid droplet ejection region and causes the liquid droplet ejection heads to start ejecting the liquid droplets onto the recording medium, is provided.

Abstract: A head drive apparatus of an ink jet printer having: a plurality of nozzles for jetting liquid drops that are provided for an ink jet head; a plurality of actuators provided in correspondence to the nozzles; and a drive unit that applies a drive signal to the actuators, wherein the drive unit comprising: a drive waveform generator that generates a drive waveform signal being standard of a signal to control drive of the actuators; a modulator that modulates a pulse of a drive waveform signal generated by the drive waveform generator; a digital power amplifier for amplifying power of a modulated signal subjected to the pulse modulation by the modulator; and a low pass filter for smoothing an amplified digital signal subjected to the power amplification by the digital power amplifier and supplying the signal as a drive signal to the actuators.

Abstract: Systems and methods are described for printing directly onto textiles including digitally printing an image in a single pass. The systems and methods provide for printing in one pass, thereby reducing distortion from movement of the textile or misalignment of the print head(s). The systems and methods provide for a second print head that may operate as a redundant print head.

Abstract: (Problem to be Solved) To appropriately restrain occurrence of striped variation and to appropriately enhance image quality of a printed result. (Solution) An inkjet printer in which multi-gradation printing is performed in an inkjet method includes an ejection control section for controlling ejection of ink droplets by supplying an ejection control signal to a nozzle for controlling ejection of the ink droplets from the nozzle of an inkjet head. The inkjet head forms lines of ink dots juxtaposed in a line direction so that the lines are juxtaposed in a direction perpendicular to the line direction. In a case that a nozzle which forms a line is the abnormal nozzle, an ejection control signal corresponding to an ink dot size which is different from a case of the normal nozzle is supplied as the ejection control signal corresponding to a part of the dots juxtaposed in the line, thereby an average value in the line of ejection errors is brought close to zero.

Abstract: In a matrix area, a plurality of linear areas each of which extends in a tilt direction tilted relatively to row and column directions are arranged in a direction perpendicular to the tilt direction without spaces, and the plurality of linear areas are alternatively assigned to first and second element groups along an arrangement direction. One element is specified in each element group and subsequently process of specifying an element farthest from specified elements, is repeated to acquire a turn-on order of dots with increase in gray level in one grayscale range and a turn-off order of dots with decrease in gray level in the remaining grayscale range, and a threshold value of each element is determined according to these orders. Thus, generated is a threshold matrix capable of reducing graininess in a halftone image with directionality in the tilt direction, and improving the reproduction of thin lines and characters.

Abstract: A printing device includes a first nozzle column in which nozzles discharging liquid to a medium are arranged in a line in a predetermined direction, a second nozzle column in which nozzles discharging liquid to the medium are arranged in the predetermined direction, in which the first and second nozzle columns are arranged in a line in an intersecting direction with respect to the predetermined direction, a control portion which causes the first nozzle column and the second nozzle column to discharge the liquid to the medium while moving the first and second nozzle columns and the medium relatively to each other in a moving direction, in which the control portion forms a certain correction pattern composed of a first pattern formed by the first nozzle column and positioned on one side in the intersecting direction with respect to the moving direction and a second pattern formed by the second nozzle column and positioned on the other side in the intersecting direction with respect to the moving direction in p

Abstract: A method of forming an image by an image forming apparatus provided with a print head having plural nozzles, wherein the print head has an overlapping area whose print area overlaps a print area of a physically adjacent print head, or has an overlapping area whose print area overlaps an adjacent scan line on a print sheet surface, includes an image forming step of forming an image by the print head, wherein the image forming step includes a control step of controlling in a variable manner an amount of ink sprayed from a proximity nozzle situated in close proximity of the overlapping area, the proximity nozzle being one of the nozzles situated in a non-overlapping area outside the overlapping area.

Abstract: A density correction value calculation method for a printing device comprising: (A) determining the density of each pixel column composed of pixels aligned in the intersecting direction in a duty determination pattern, and also determining the density of each pixel column in the duty determination pattern; (B) specifying the total duty for which the lowest density of the pixel column densities of the overlapping regions is equal to or greater than the lowest density in the pixel columns of the non-overlapping regions; and (C) calculating a density correction value of the pixel columns using a density correction pattern formed with the specified total duty, and also calculating a density correction value so that the lowest density of the pixel column densities of the density correction pattern is a reference.

Abstract: While a conveying error of a roller depends on the eccentricity of the roller, the amount and the state of the eccentricity sometimes makes the roller have different conveying errors from one point in the longitudinal direction of the roller to another. There is provided a construction for obtaining a correction value that is suitable for the correction of the conveying error even in such a case as described above. To this end, plural test patterns are formed in the longitudinal direction of the roller. Then, a suitable correction value for correcting the conveying error that depends on the eccentricity of the roller is obtained on the basis of these test patterns.

Abstract: A printing method and a printing apparatus of the present invention are capable of performing both a vertical registration adjustment in which a range of nozzles used for printing is limited and a vertical registration adjustment in which print data is shifted. More specifically, switching is performed between the vertical registration adjustment in which a range of nozzles used for printing is limited and the vertical registration adjustment in which print data is shifted, in accordance with conditions such as a printing mode, types of printing medium, and the like. Thereby, an improvement of a throughput by a printing apparatus and an improvement of an image quality printed by the printing apparatus can be together achieved.

Abstract: A web press printer includes a printbar supporting an array of printheads extending across a media web. The printbar includes a support member coupled to the printbar via one or more biasing mechanisms to locally counteract a deflection of the printbar at a location of one or more of the respective printheads along the printbar.

Abstract: Among other things, for jetting ink droplets on a substrate during relative motion of an apparatus and the substrate along a process direction, a first and second jetting assemblies at least partially overlap in a direction perpendicular to the process direction so that some jets in the first jetting assembly align with some jets in the second jetting assembly along the process direction to form one or more pairs of aligned jets. A mechanism enables, in at least one pair of the aligned jets, one jet to jet a first ink drop that has a size smaller than a size of an ink drop the jet would otherwise be required to jet to form a desired pixel and the other jet to jet a second ink drop that has a size sufficient to form the desired pixel in combination with the first ink drop.

Abstract: There is provided a liquid droplet jetting apparatus which jets liquid droplets on to an object, including a transporting mechanism which transports the object along a transporting path extended in a predetermined transporting direction, two heads, each having a plurality of nozzles arranged in a row along a direction intersecting the transporting direction, which jet liquid droplets from the plurality of nozzles while maintaining relative positions of the two heads, and a head relative-position changer which switches the relative positions of the two heads to a predetermined first relative position, and a second relative position which is different from the first relative position in the direction intersecting.

Abstract: An inkjet printing device comprises an inkjet print head, a carriage on which the print head is mounted and which moves to and fro in a main scan direction while facing a sheet, a detector unit mounted on the carriage and detecting whether or not the sheet exists at a position facing a detecting position (prescribed position of the carriage in the main scan direction), an acquisition unit which acquires a print command including size information specifying sheet size, a setting unit which sets the detecting position depending on the size information, a moving unit which moves the carriage to the detecting position set by the setting unit, and a checking unit which checks whether the sheet exists at the position facing the detecting position by use of the detector unit after the carriage is moved to the detecting position and before the printing on the sheet is started.

Abstract: First and second selection signals for selecting one of print data and n pulse signals stored in a shift register are latched. The first or second selection signal is selected in accordance with an input selection information switching signal, and one of the n input pulse signals is selected based on the selected signal. A heat pulse selection circuit outputs the selected pulse signal as a heat pulse signal. The level of the selection information switching signal switches midway to switch the selected pulse signal. Parts of two pulse signals before and after switching are combined to generate a heat pulse signal.

Abstract: An object of the present invention is to provide an ink jet printing apparatus which can prevent possible stripe-like density unevenness in a joint in a print head constructed by joining a plurality of chips together even if the print head is inclined to the regular position of the print head. The present invention uses a print head having the nozzle arrays being shifted in a direction in which the nozzles are arranged, so as to have overlapping portions in a direction orthogonal to the nozzle arranging direction. The present invention controls an ink ejecting operation of the nozzles in the overlapping portions between the plurality of nozzle arrays on the basis of an angle between the nozzle array arranging direction and a direction orthogonal to the direction in which the print head moves relative to the print medium.

Abstract: While a conveying error of a roller depends on the eccentricity of the roller, the amount and the state of the eccentricity sometimes makes the roller have different conveying errors from one point in the longitudinal direction of the roller to another. There is provided a construction for obtaining a correction value that is suitable for the correction of the conveying error even in such a case as described above. To this end, plural test patterns are formed in the longitudinal direction of the roller. Then, a suitable correction value for correcting the conveying error that depends on the eccentricity of the roller is obtained on the basis of these test patterns.

Abstract: A liquid ejecting print head, which may be included in a liquid ejecting device and/or an image forming apparatus, includes a plurality of print head units arranged across a longitudinal direction of the liquid ejecting print head and aligned in a zigzag manner in a direction perpendicular to the longitudinal direction of the liquid ejecting print head, a plurality of nozzle arrays mounted on each print head unit and including a plurality of nozzle orifices for ejecting a droplet of ink, an energy generating element mounted on each print head unit and provided for each nozzle orifice for generating energy for ejecting the droplet of ink, and a wiring member including a plurality of wirings formed to run in an identical direction with respect to each print head unit and configured to transmit respective signals to the energy generating element.

Abstract: A printing apparatus is provided with a line-type ink jet head having a plurality of blocks on each of which a set of ink ejection elements are arranged. A drive signal generating unit is configured to generate a drive voltage signal including a prepulse to be applied to the set of the ink ejection elements for each block, based on data indicating a number of times of ejecting ink to each pixel; and a first storage unit is configured to store a drive signal adjustment value to adjust a set of a voltage value of the drive voltage signal and a width of the prepulse for each block. The drive signal generating unit generates the drive voltage signal for each block, based on the drive signal adjustment value for each block read out from the first storage unit.

Abstract: Dot positions are measured by recording dots on a recording medium in a measurement line pattern including a plurality of lines of rows of the dots respectively corresponding to a plurality of recording elements. The measurement line pattern is read where a longitudinal direction of the plurality of lines is directed to a sub-scanning direction of an image reading apparatus. A plurality of averaging regions is allocated to different positions of line blocks, the lines arranged in a main scanning direction. The image signal is averaged in the allocated averaging regions, and average profile images are created for positions in terms of the main scanning direction. Positions of both edges of each line are determined according to the average profile images. Line positions in the averaging regions are determined according to the edge positions. Line positions in the line blocks are determined according to the line positions in the averaging regions.

Abstract: This invention is directed to an element substrate including a plurality of print element arrays in which print elements are arranged at different arrayed densities. The element substrate can efficiently transfer data to each print element. The element substrate includes the following arrangement. More specifically, the first print element array having a relatively large number of print elements, and the second print element array which is equal in length to the first print element array and has a relatively small number of print elements are juxtaposed. The element substrate includes one shift register which holds data for driving the print element of the second print element array, and a plurality of shift registers for dividing and holding data for driving the print elements of the first print element array.

Abstract: A method for controlling a printing position for a printing apparatus for using a plurality of printing heads to print an image is provided. This method prevents, even when a conveyed print medium has deformation such as deflection, a printing position of a print medium from being dislocated. To realize this, components 11 to 14 for detecting the conveyance speed of a print medium and components 101 to 107 adjusting the driving timing at which the respective plurality of printing heads eject ink in accordance with the resultant conveyance speed are provided. As a result, even when a conveyed print medium has deformation such as deflection, the control can be provided that prevents the print medium from having a dislocated printing position.

Abstract: A patterning apparatus for performing highly accurate patterning to substrates continuously transferred is provided. Furthermore, a method for manufacturing an organic electroluminescence element wherein such patterning apparatus is employed, an organic electroluminescence element and an organic electroluminescence display device obtained by using such manufacturing method are provided.

Abstract: An array-type image forming apparatus and a method for compensating an image using the same include an image density determination unit to determine the image density of each line on a page, a storage unit stores one or more threshold values and a control unit compensates the image density by comparing the determined image density of each line and the threshold value. When the image density reaches the threshold value, the control unit modifies the amount of heat supplied to a print head, thus modifying the amount of ink applied to subsequent lines on the page, in order to provide compensation for the image density.

Abstract: A method and apparatus for aligning the printing of dots generated by at least one array of printing elements in an printing apparatus, wherein the method includes the steps of printing a calibration test pattern, scanning the printed calibration test pattern, determining at least one calibration value based on the scanned calibration test pattern, positioning an alignment adjustment tool relative to the array of printing elements of which the alignment needs to be adjusted and, based on the calculated calibration value, automatically adjusting the alignment of the array of printing elements using the alignment adjustment tool.

Abstract: A printer including a plurality of printhead modules located across a print media transport path is disclosed. Each printhead module has an elongate printhead. Nozzles of respective printheads overlap with nozzles of printheads of neighboring printhead modules. The printer further includes a dot data generator for providing print data to nozzles such that print data is stochastically ramped from one neighboring printhead module to a next neighboring printhead module.

Abstract: Liquid ejecting apparatuses and image formed methods are provided. In an exemplary embodiment, a liquid ejecting apparatus is provided including a head unit, a movement mechanism, and a control section. The head unit has along a first direction a plurality of heads, in which a plurality of nozzles that eject a liquid onto a medium are lined up in the first direction, and the head unit forms a single raster line by ejecting the liquid while performing m number of movements relative to the medium in a second direction, which intersects the first direction. The movement mechanism causes the head unit to perform a plurality of movements relative to the medium alternately in the second direction and the first direction. The control section forms an image having a resolution that is n times a pitch of the nozzles.

Abstract: A printhead having at least first and second rows of print nozzles. Each nozzle has first circuitry of a first type arranged asymmetrically to second circuitry of a second type. The respective positions of the first and second circuitry of each nozzle of the first row are arranged mirrored with respect to the first and second circuitry of each nozzle of the second row.

Abstract: A printing apparatus includes a plurality of full-line type printheads. The printing apparatus holds information relating to overlap nozzles that overlap between a reference printhead and an adjustment printhead, generates discharge data for causing a tilt adjustment pattern to be printed by nozzles disposed in different positions in the overlap nozzles that overlap between the reference printhead and the adjustment printhead, and causes ink to be discharged from the nozzles in the overlap nozzles that overlap between the reference printhead and the adjustment printhead based on the discharge data. In this manner, the tilt adjustment pattern is printed on a printing medium.

Abstract: There is provided a liquid ejecting apparatus including a head unit in which a plurality of heads in each of which a plurality of nozzles are disposed in a direction perpendicular to a recording medium transport direction are provided in the direction perpendicular to the recording medium transport direction, a control unit for driving the head unit based on image information and for performing a liquid ejection timing control for ejecting liquid from the nozzle to a recording medium for every nozzle, and an inclination amount storage unit in which inclination information of the head unit is preliminarily stored. The control unit has a calculator for calculating the most appropriate ejection timing with respect to the recording medium transport direction for every nozzle of each head from the image information and the inclination information of the head unit.

Abstract: This invention is directed to allow efficiently transferring data to each print element (heater) and efficiently laying out circuits in an element substrate including plural heater arrays in which different numbers of heaters are arranged. This substrate includes: a first array having a relatively large number of heaters; and a second array which is equal in length to the first array and has a relatively small number of heaters. These arrays are juxtaposed. The substrate further includes plural shift registers equal in number to the heater arrays of the substrate. The shift registers include a shift register which holds some data for driving the heaters of the first heater array, and data for driving the heaters of the second heater array. The shift registers further include a shift register which holds data other than some data for driving the heaters of the first heater array.

Abstract: A method of generating halftone print data for overlapping end portions of a pair of consecutive printhead segments in an array of two or more printhead segments is disclosed. Generally an end portion of a first printhead segment overlaps an end portion of a second printhead segment, in which each printhead segment includes a plurality of ink ejection nozzles. The method includes generating a dither value from a dither matrix, and then combining the dither value with an overlap signal, which represents an extent of overlap of the end portions, to produce an output value. A mathematical operation is then performed on continuous tone print data using a comparator, based on the output value, to produce the half tone data.

Abstract: A printhead assembly is provided having a plurality of print nozzle integrated circuits, an electrical connector for connecting electrical signals to the print nozzle integrated circuits, and drive electronics having electrical contacts for electrical connection to the electrical connector, input contacts for receiving print data, and a plurality of controllers for processing the print data. Each controller is connected to a predetermined number of the print nozzle integrated circuits via the electrical contacts and being interconnected to the other controllers. The drive electronics are selected from a range of drive electronics, each having a different number of the interconnected controllers configured to each process the print data applicable to a selected number of the print nozzle integrated circuits such that the ratio of controllers to print nozzle integrated circuits can be varied to change the print speed of the printhead assembly.

Abstract: An inkjet image forming apparatus having an array type print head to stably deliver a printing medium through a printing zone. The inkjet image forming apparatus includes an array type print head including a nozzle part to discharge ink to a printing zone, a first rolling unit having a first nip portion to nip the printing medium, wherein the first nip portion is disposed before the printing zone to deliver the printing medium to the printing zone, and a second rolling unit having a second nip portion to nip the printing medium, wherein the second nip portion is disposed downstream of the first rolling unit in a delivery direction of the printing medium. A distance between the first nip portion and the second nip portion is less than or equal to 3 inches.

Abstract: A recording apparatus includes a feeding device for feeding a recording medium, recording heads arranged along a feeding direction and extending in a direction orthogonal to the feeding direction, and a control unit for controlling the recording heads, and including storage for storing printing cycle data for printing cycles. For each printing cycle the printing cycle data includes head drive data and head identifying data identifying each head in a corresponding positional relationship with the recording medium in the feeding direction. As the recording medium advances in the feeding direction, the number of heads identified by the head identifying data in a printing cycle changes over time. Also, the apparatus includes a drive unit for reading the printing cycle data associated with a corresponding printing cycle and drives each head identified by the head identifying data based on the head drive data corresponding to the printing cycle data.

Abstract: A liquid ejection control device controlling a liquid ejecting mechanism having a plurality of liquid ejection heads, includes a dividing unit to which image data consisting of a plurality of pixels is inputted and which divides the image data into a plurality of pieces of divided image data, each corresponding to pixels which undergo a liquid ejection, of each of the liquid ejection heads, a correction data acquiring unit which acquires correction data eliminating a deviation of liquid ejection locations of the plurality of liquid ejection heads, a correcting unit which corrects the divided image data on the basis of the correction data, and a liquid ejection controlling unit which performs liquid ejection control by which each of the liquid ejection heads is driven on the basis of the divided image data which is corrected.

Abstract: The inkjet recording apparatus includes: an inkjet recording head which includes a nozzle through which liquid is ejected; a pressure regulating unit which includes a liquid chamber that communicates with the nozzle and a gas chamber that is partitioned from the liquid chamber by a flexible film; and a liquid chamber pressure controlling device which controls a pressure of the liquid chamber to a predetermined negative pressure when carrying out back pressure control in which back pressure is applied to the liquid inside the nozzle, wherein: the flexible film causes change in the pressure of the liquid chamber when the liquid is supplied for at least a predetermined supply amount to the liquid chamber in a state where the gas chamber is open to air; and the liquid chamber pressure controlling device carries out the back pressure control after controlling the pressure of the liquid chamber to a predetermined value of positive pressure by supplying the liquid of at least the predetermined supply amount to the l

Abstract: An inkjet recording apparatus has: a head having a plurality of nozzles which eject an ink onto a recording medium; a conveyance device which conveys the recording medium; a droplet ejection control device which controls ink ejection of the head; a test image forming device that forms a test image on the recording medium by causing the ink to be ejected from every n (where n is a natural number equal to 2 or higher) nozzles in an X direction perpendicular to a direction in which the recording medium is conveyed, and causing the ink to be ejected so as to form vertical lines forming n columns which shift by one nozzle in the X direction and each extend continuously in terms of a Y direction parallel to the direction in which the recording medium is conveyed; and a reading device which is provided on a conveyance path of the recording medium, reads in a test image on the recording medium and has an image reading structure covering a length corresponding to full width of the recording medium in a breadthways dir

Abstract: An ink-jet recording apparatus of one aspect of the invention comprises nozzles are arranged on an ink ejection surface in a matrix in a first direction in which a recording medium is conveyed and a second direction orthogonal to the first direction. The plurality of nozzles are grouped into a plurality of nozzle sets, each of the plurality of nozzle sets includes nozzles arranged along the second direction. The plurality of nozzle sets are spaced from one another in the first direction by first distances, each of the first distances is an integral multiple of a distance that is obtained by multiplying a unit distance by 2n-1. The unit distance corresponds to a highest resolution among first resolutions with respect to the first direction of an image to be formed on the recording medium.

Abstract: A printer is provided with an ink jet head and a controller. The ink jet head prints on a print medium by discharging ink. The ink jet head comprises a plurality of units. Each unit comprises a nozzle for discharging ink, a pressure chamber communicating with the nozzle, and a piezoelectric element facing the pressure chamber. The piezoelectric elements form at least two element lines. Each element line is formed by at least two piezoelectric elements aligned in a first direction. Each element line is aligned in a sec direction which is different from the first direction. The controller controls the ink jet head to print on the print medium by changing voltage applied to each piezoelectric element of the ink jet head. The controller controls timings at which the controller changes voltage applied to each piezoelectric element by the element line.

Abstract: A liquid ejecting method includes detecting a faulty nozzle in which an ejection fault occurs when a liquid should be ejected, calculating corrected tone values by correcting tone values of pixels adjacent to pixels at which the liquid should be ejected from the faulty nozzle based on a correction amount, and a liquid ejecting apparatus ejecting the liquid to the adjacent pixels based on the corrected tone values.

Abstract: The image forming apparatus has: a head which has a liquid ejection surface and performs liquid ejection in which liquid is ejected from the liquid ejection surface; an intermediate transfer body moving in a movement direction with respect to the head and having an image forming surface opposing the liquid ejection surface of the head and a rear surface which is reverse to the image forming surface and on which a line pattern constituted by pattern elements is formed, the image forming surface having an image forming region in which an image is formed by the liquid ejected from the liquid ejection surface of the head, the pattern elements being arranged equidistantly in the movement direction; a transfer device which transfers the image formed in the image forming region of the intermediate transfer body to a recording medium; a reading device which is provided on an upstream side of the head in terms of the movement direction of the intermediate transfer body and reads light reflected by the line pattern; an

Abstract: A barcode printing method can easily and quickly find the location of a group of consecutive printing elements that can print a barcode correctly when the line print head has faulty printing elements. The printing device 1 determines the shift range L5 for the barcode 8 printing position (B11), aligns the center of the barcode 8 print data D2 with the center of the shift range L5, from this position alternately shifts the print data D2 one printing element at a time left and right in the line direction A, and finds a group of consecutive printing elements that can print the barcode 8 correctly (B12). A normal printing range can thus be found in a short time with the smallest shift compared with searching from the end of the shift range, and the overall efficiency of a barcode printing operation that executes repeatedly can be improved.

Abstract: An image area of a main scanning line is segmented into a plurality of regions, with a first image being formed that has a first number of pixels in each of the plurality of regions, and a second image being formed that has a second number of pixels in each of the plurality of regions that differs from the first number of pixels. A scaling factor of an image in each of the plurality of regions is derived thereafter, in accordance with a difference in size between the first image and the second image in each region, and a differential between the first number of pixels and the second number of pixels. A determination is made with respect to a number of pixels to be either added to, or subtracted from, each of the plurality of regions, in accordance with a total number of correction pixels in order to adjust the size of the image of the main scanning line, and the scaling factor. The image data of each of the plurality of regions is corrected in accordance with the determined number of pixels in each region.

Abstract: A printer including a plurality of printhead modules located across a print media transport path is disclosed. Each printhead module has an elongate printhead. Nozzles of respective printheads overlap with nozzles of printheads of neighboring printhead modules. The printer further includes a dot data generator for providing print data to nozzles such that print data is stochastically ramped from one neighbouring printhead module to a next neighbouring printhead module.

Abstract: A printing apparatus of this invention includes: an output section that has a predetermined number of output terminals, and that outputs pixel data from each of the output terminals respectively; a cable that has the predetermined number of transmission lines for transmitting the pixel data that are outputted from the predetermined number of the output terminals respectively; a head that can eject a plurality of colors of inks, and that has nozzle groups for the respective colors of the inks; and a plurality of head controllers that cause the ink to be ejected from the nozzle groups based on the pixel data, a plurality of the head controllers each being provided corresponding to each of the colors of the inks. Wherein the number of the output terminals is larger than the number of the colors of the inks, and at least one of the head controllers causes the ink to be ejected from the nozzle group of a corresponding color, based on the pixel data transmitted via two or more of the transmission lines.

Abstract: A printing cartridge comprises a body configured to removably engage with an inkjet printer; a printhead assembly mounted to the body, the printhead assembly including at least one printhead integrated circuit and an ink distribution support, the at least one printhead integrated circuit being mounted to an underside of the ink distribution support; a plurality of conduits provided through an underside of the ink distribution support, the conduits providing fluidic communication between a plurality of ink paths of the ink distribution support and the underside of the ink distribution support; and a sealing film for adhesively mounting the printhead integrated circuit to the ink distribution support, the sealing film including a plurality of through-holes which correspond to and align with the conduits. The sealing film provides a seal preventing mixing of ink from each of the plurality of ink paths at an underside of the ink distribution support.

Abstract: A mobile telecommunications device is provided having a printhead for printing on print media, a capper moveable between a capped position in which the printhead is capped and an uncapped position in which the printhead is uncapped, and a mechanism for maintaining the capper in the uncapped position. The mechanism has actuation arms configured to grip and retain the print media suspended from the device once printing is complete until removal of the print media from the device by a user.