Abstract: According to the liquid ejection head and the liquid ejection apparatus of the present invention, it is possible to reduce wasted nozzles in a joint section by reducing the total number of nozzles NA included in a joint section between head units that are positioned and fixed with high accuracy, while diminishing discontinuity of liquid ejection in joint sections between head units and joint sections between intermediate units, and furthermore, it is possible to make the replacement of each intermediate unit easy and hence to reduce the work involved in replacing intermediate units by further increasing the total number of nozzles NB included in joint sections between intermediate units which are fixed with less strict positioning accuracy than the head units.

Abstract: The present invention efficiently optimizes a non-ejection correction parameter for each nozzle. The non-ejection correction parameter for each nozzle is optimized by repeatedly executing the operations of generating test chart data based on a non-ejection correction parameter for each of a plurality of nozzles provided on an ink-jet head; acquiring read data of a test chart recorded on a recording medium by ejecting ink from the plurality of nozzles based on the test chart data while relatively moving the ink-jet head and the recording medium; evaluating a correction intensity of the non-ejection correction parameter for each of the nozzles based on the acquired read data; and updating the non-ejection correction parameter for each of the nozzles based on a single variable root-finding algorithm using iteration method from the evaluated correction intensity.

Abstract: Embodiments of the invention provide a touch sensor, a manufacturing method thereof and a liquid crystal display having touch panel. The touch sensor comprises a substrate, a touch sensing layer in a first direction, a touch sensing layer in a second direction perpendicular to the first direction, an insulation layer and a metal bridge. The touch sensing layers in the first and second directions are provided on a surface of the substrate, the touch sensing layer in the first direction is discontinuous, and the touching sensing layer in the second direction is continuous. The insulation layer is provided on the substrate, the touch sensing layer in the first direction and the touch sensing layer in the second direction. The metal bridge is provided on the insulation layer and connects with the touch sensing layer in the first direction.

Abstract: A method for printing including preparing an image at a first resolution in a first direction, selecting pixels from the prepared image, reordering the selected pixels to create a translated image having a second resolution in the first direction, where the second resolution is different from the first resolution, and printing the translated image. Also included are a printing system and an article of computer readable code.

Abstract: A fluid ejecting apparatus includes first and second rows of nozzles ejecting first and second fluids respectively. A control section repeats an image formation operation ejecting fluid from the first and second nozzles while moving them perpendicularly to the row direction and controls transportation of the medium in the row direction. After formation of a first image layer by the first and second fluids, a second image layer is formed thereon by the second fluid. For normal image formation, the first and second nozzles forming the first image layer are further upstream in the row direction than the second nozzles forming the second image layer, and for image formation of an upper end of the medium, the first and second nozzles forming the first image layer are further downstream in the row direction than the first and second nozzles forming the first image layer in normal image formation.

Abstract: A liquid ejection apparatus including a first-recording executing section configured to execute a two-way processing based on first data included in recording data corresponding to a predetermined maximum number of lines recordable during a single movement of a carriage, the first data being data based on which liquid ejection is performed on a downstream side of a unit area in which a ratio of the number of dots each required for multi-color ejection to the number of all dots is not less than a first value. The first-recording executing section executes a one-way processing based on data corresponding to the unit area in which the ratio is not less than the first value and data based on which liquid ejection is performed on an upstream side of the unit area, which two data are included in the recording data corresponding to the predetermined maximum number.

Abstract: An inkjet recording system including a separation unit configured to obtain separated data which corresponds to each of a plurality of nozzle arrays from input image data, a gradation correction unit configured to perform gradation correction by one-dimensional conversion on the separated data obtained by the separation unit, and a quantization unit configured to quantize the data on which the gradation correction is performed by the gradation correction unit to generate the recording data, wherein the separation unit obtains the separated data so that first separated data and second separated data corresponding to at least a pair of nozzle arrays for adjusting an effect of an air current have a same value, and the gradation correction unit performs different gradation correction on the first separated data and the second separated data which have the same value.

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 determines the shift range for the barcode printing position, aligns the center of the barcode print data with the center of the shift range, from this position alternately shifts the print data one printing element at a time left and right in the line direction, and finds a group of consecutive printing elements that can print the barcode correctly. 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: A method of compensating for bi-directional alignment error in a printing system including a carriage, a print head disposed thereon, and a bi-directional printing mode includes determining a data set by a data set determination module corresponding to bi-directional alignment error at a plurality of carriage speeds. The method also includes determining a line of best fit of the data set by a best fit determination module and identifying a flight time of fluid ejected from the print head and a carriage position error of the carriage from the line of best fit by an alignment parameter identification module. The method also includes compensating for the bi-directional alignment error by an error compensation module based on the flight time and the carriage position error.

Abstract: Embodiments of a printhead are disclosed.

Abstract: An inkjet printing apparatus and an inkjet printing method are provided which can correct, with high precision, print position deviations among a plurality of printing element arrays in each of a plurality of print modes that use different groups of printing elements in each printing element array. The adjustment values for the print position deviations between the first and second printing element arrays are differentiated between the high-speed mode and the high-quality mode. In the high-speed mode, all printing elements in the first and second printing element arrays are used. In the high-quality mode, a part of the printing elements in each of the first and second printing element arrays are used. Based on these adjustment values, the ink ejection timings of the first and second printing element arrays are adjusted.

Abstract: A printer-side controller of a printer repeats transmission of connection confirmation data while response data is received in response to the connection confirmation data. A device-side controller of the connectable device forward the connection confirmation data which is received after transmission of the response data to another connectable device connected thereto. Further, when the printer-side controller confirms connection with any of the plurality of connectable devices by receiving the response data, the device-side controller of the connectable device for which the connection is confirmed stores in the device-side identifier storage memory the identifier corresponding to the position of the connectable device, which is stored in the printer-side identifier storage memory of the printer.

Abstract: An ink jet recording head includes a nozzle array and discharge energy generation elements. The nozzles include discharge ports to discharge liquid when recording, pressure chambers to communicate with respective discharge ports, and liquid flow paths to supply liquid to the respective pressure chambers. The discharge energy generation elements apply discharge energy to the pressure chambers to discharge liquid from the nozzles in a predetermined order during time-division driving. Arranging intervals of the liquid flow paths take at least two different values. When a drive timing difference average between the adjacent discharge energy generation elements is calculated by a particular expression, a relationship of D?Y is satisfied between an interval D and an interval Y in a k-th discharge energy generation element and a k+1-th discharge energy generation element positioned adjacent to the k-th discharge energy generation element.

Abstract: A print head module (20) for depositing a substance has an axis and a plurality of print heads (22) provided with nozzles (23). The heads are distributed along the axis to form an elongate compound head having nozzle redundancy by arranging the heads in partially overlapping relation to one another. This allows deposition of the substance from the nozzles in uniform swathes having different angles transverse to the axis.

Abstract: A leveling and spreading system has been developed that enables the speed and position of the web to be determined from a sensor on a first roller. In a duplex print process, the first roller also reduces a temperature of the media web and an ink image printed in the first side print operation to within a first predetermined temperature range. A second roller modulates the temperature of the media web and ink ejected onto the media web immediately before the web enters the leveling and spreading system to within a second predetermined temperature range to enable uniformity of the ink and web temperatures for spreading the ink in a nip formed with a third roller.

Abstract: A printer and a method of printing by depositing liquid droplets (26) onto a substrate (12), wherein a line is printed in a printing direction (B), wherein the droplets (26) forming the line are continuously printed wet-on-wet, and wherein, at least in a middle part of said line, the droplets (26) are printed according to a regular droplet pattern, and wherein, at least in one end part of the line, at least an outermost droplet (26) of the line is printed deviating from the regular droplet pattern, thereby adapting the continuously wet-on-wet printed line for compensating for ink flow behavior which causes deviation from the image to be printed.

Abstract: A printing apparatus includes a printing mechanism performing printing by ejecting ink from a printing head which is relatively moved with respect to the printed medium and a printing control section controlling operation of the printing mechanism. A plurality of nozzle rows are formed side by side for each of ink types in a main scanning direction in the printing head. The printing mechanism includes a transportation section which is configured so as to be capable of switching a transportation direction of the printed medium between a first direction and a second direction. The printing control section performs the printing by switching the first printing mode which uses two or more nozzle rows and the second printing mode which uses one or more nozzle rows, which is caused by switching the transportation direction.

Abstract: An ejection adjustment pattern forming method of forming an ejection adjustment pattern on a print medium with an inkjet head, which has a plurality of nozzles, with moving the inkjet head in a predetermined scanning direction. The method forms a plurality of thickness measurement patterns respectively on a plurality of pattern forming areas defined on the print medium by causing the plurality of nozzles of the inkjet head to eject ink drops, and forms a plurality of judging patterns respectively on the plurality of pattern forming areas. The ejection conditions of the plurality of nozzles, when the plurality of thickness measurement patterns are formed, are the same among the plurality of pattern forming areas. Further, the ejection conditions of the plurality of nozzles when the first judging pattern is formed and when the second judging pattern is formed are the same among the plurality of pattern forming areas.

Abstract: Disclosed is process of forming a regular array of rows of subpixels on a workpiece. The subpixels having four different colors, and a subpixel pitch s. Of the four colors, q colors are formed by printing and r colors are formed by a non-printing method.

Abstract: A controller is configured to determine nozzles to be used for ejection in nozzle arrays in a upstream head block by selecting endmost nozzles from nozzles in a region of the upstream head block overlapping a downstream head block so that the endmost nozzle of the nozzle array located more downstream is closer to a center of the upstream head block, and determine nozzles to be used for ejection in nozzle arrays in the downstream head block by selecting endmost nozzles from nozzles in a region of the downstream head block overlapping the upstream head block so that the endmost nozzle of the nozzle array located more upstream is closer to a center of the downstream head block.

Abstract: In an inkjet head, at least one of a plurality of nozzle arrays to eject ink of different colors from one another is arranged with nozzles displaced in position from nozzles of the other nozzle arrays in an arrangement direction of the nozzles. A controller is configured to reduce an amount of ink to be ejected to a pixel at an end portion of an image on one side in the arrangement direction from a nozzle array of the plurality of nozzle arrays having a nozzle protruding to the one side the most among the nozzles of the nozzle arrays for a same ejection target pixel.

Abstract: A fluid ejecting apparatus repeats an ejecting operation which ejects a fluid from nozzles while a first nozzle row and a second nozzle row move in a movement direction with respect to a medium and a relative movement operation in which the first nozzle row, the second nozzle row and the medium relatively move to the nozzle row direction, and repeatedly performs the ejecting operation so as to include the ejecting operation which does not perform a control which changes the movement distance in the movement direction of the first nozzle row and the second nozzle row according to a position of an end in the movement direction of the image when a main image and a background image are formed to be overlapped on the medium at different ejecting operations.

Abstract: In an inkjet head which has nozzle rows having nozzles each of which ejects curable inks cured by imparted activation energy and which are arranged in a first direction at a pitch P, the nozzle rows being N (N?5) nozzle rows of every color which eject, respectively, thick inks of four colors including cyan, magenta, yellow and black, and at least one light ink among light inks similar in color tone to the thick inks, the nozzles in each of the nozzle rows are arranged so as to be shifted by P/N from each other in a first direction, a nozzle of an ink with lowest cure sensitivity is arranged on the most upstream side in a direction of relative movement of a recording medium in the first direction, and further the nozzle of light ink is arranged in between the nozzles of two different thick inks.

Abstract: A printing apparatus comprising: a print head which relatively moves on a printing medium, and a print control unit that controls the print mechanism, a plurality of nozzle columns are formed in the print head, wherein the print control unit is configured to execute printing by using a first nozzle use setting configured such that a first group of a first nozzle column on an upper stream side is used and a second group of a second nozzle column on the downstream side is used, or a second nozzle use setting configured such that an entire third column is used, and a third nozzle use setting configured such that a third group of the second nozzle column on the upper stream side is used, and a fourth group of the first nozzle column on the downstream side is used in order of each first, second, and third nozzle use setting.

Abstract: A printhead and a method of ejecting liquid droplets are provided. The method includes providing a printhead operable to eject liquid drops having a plurality of drop volumes Vi, for i equal to 1 through n, where n?2, with Vj>Vi when j>i. One of the plurality of drop volumes is a minimum drop volume Vmin, and a difference in drop volumes between successively larger drops equals (Vk+1?Vk) which is less than Vmin, for k equal to 1 through n?1. The method also includes ejecting liquid drops through the printhead.

Abstract: Nozzles for ejecting color ink are aligned in the conveying direction of a recording sheet at a pitch corresponding to three times the pitch of nozzles ejecting black ink. A region in which an image is printed is divided into sixteen regions segmented into four parts in the scanning and conveying directions. Each region includes eight dots in the scanning direction and four dots in the conveying direction. With respect to regions which include one character, in one side attachment regions, black ink is ejected only when an ink jet head is moved to the right side. With respect to regions which include one character, in the other side attachment regions, black ink is ejected only when the ink jet head is moved to the left side.

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 liquid ejection apparatus includes: a conveying mechanism, a first head for ejecting a first liquid; a second head for ejecting a second liquid for coagulating or precipitating components of the first liquid, and a controller. A pair of second ejection openings of the second head are arranged side by side. The second liquid is to be ejected respectively from the pair of second ejection openings at different timings onto a pair of unit areas arranged side by side. The controller controls the second head so as to reduce an amount of the second liquid ejected from at least one of the pair of second ejection openings, when an amount of the second liquid to be ejected from one of the pair of second ejection openings at an earlier one of the different timings is equal to or larger than a first predetermined value.

Abstract: A liquid ejection head including: a base plate member having ejection holes and an ejection face having ejection openings; and an actuator; wherein the ejection face has first and second recessed portions extending in one direction and arranged in a perpendicular direction, wherein the ejection openings are formed in bottom portions of the respective first recessed portions; wherein each second recessed portion and a corresponding first recessed portion are arranged side by side such that a separation distance therebetween is not smaller than a separation distance between two first recessed portions located side by side at the shortest distance among first recessed portions and is shorter than a separation distance between two first recessed portions located side by side at the greatest distance among the first recessed portions; and wherein on the bottom portions is formed a liquid repellent layer having not been removed due to a masking material having entered into the first recessed portions to cover the l

Abstract: A fluid ejecting apparatus includes first and second nozzle groups that eject first and second fluids respectively; a third nozzle group that does not eject any fluid; and a controlling section that performs image formation and transportation operations, including ejecting the first and second fluids while moving the first and second nozzle groups in a movement direction, and transporting the medium relative to the first and second nozzle groups in a predetermined direction. The controlling section performs control for forming a first image using the first nozzle group and for forming a second image on the first image using at least the second nozzle group. Relative to the predetermined direction, the first nozzle group is located upstream of the second nozzle group, and the third nozzle group is located downstream of the first nozzle group and is located upstream of the second nozzle group.

Abstract: Among other things, for ink jetting, a system includes a printhead including at least 25 jets and an imaging device to capture image information for all of the jets simultaneously, the captured image information being useful in analyzing a performance of each of the jets.

Abstract: According to the image recording apparatus and method of the present invention, as a defective recording element is detected immediately before a correction value is generated, while a correction value is being generated, and before an image is recorded, management of the recording elements can be ensured than before. In particular, as the detection of a defective recording element is carried out immediately before a correction value is generated, a defective recording element becomes known at the time of generating the correction value, and the correction value can be generated in a state where the defective recording element is put in a non-ejecting state. Further, a defective recording element can be detected more reliably. Through this, generation of a non-uniform streak resulting from a defective recording element can be suppressed with a higher possibility than before. As a result, an image of higher quality than before can be formed.

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: The present invention forms a high-quality image by using a print head, in which a plurality of arrayed small heads, each having a plurality of print elements arranged in columns, are arranged so that at least two sets of print elements in adjoining small heads are aligned in a scan direction. The print head and a print medium are moved relative to each other in the scan direction crossing a direction of the print element columns. The print elements are divided into a plurality of drive blocks and activated the drive blocks on a time-division basis. The small heads each have the plurality of print elements arranged in columns, the number of print elements being equal to an integer times the number of time-division drive blocks. Drive timings with which to activate the paired print elements aligned in the scan direction are the same time-division drive timing.

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: An aspect of the present disclosure provides a halftoning method for annular rasters comprising: using annular rasters with uniformly spaced raster lines and uniformly spaced pixels within the raster lines; angularly tiling wedge shaped halftone cells around at least a partial circumferential print medium wherein an integer number of wedge tiles fills a disc space; wherein the annular rasters are considered in arcs and wherein pixel thresholds in the wedge shaped halftone cells are considered in arcs so as to conform to the annular rasters upon tiling the wedge shaped halftone cells; and, setting the number of pixel thresholds in each arc raster of the cell to an integer value near a desired writing resolution to enable seamless tiling wherein the number of thresholds increase as a function of a wedge cell radius.

Abstract: A printing apparatus that prints an image on a print medium using special glossy ink and color ink, the printing apparatus includes a print head including a plurality of special glossy ink nozzles for ejecting the special glossy ink and a plurality of color ink nozzles for ejecting the color ink, a print unit that drives the print head, an obtaining part that obtains image data, a print controller that prints the obtained image data on the print medium by controlling the print head and the print unit. In a case of printing the obtained image data on the special glossy region, the print controller allows a group of the special glossy ink nozzles to be offset from a group of the color ink nozzles in the sub-scanning direction by a predetermined interval, and then performs the printing by ejecting the special glossy ink and the color ink at timings different from each other.

Abstract: There is provided a recording apparatus including: a recording head having recording elements arranged in a first direction; a first transporting mechanism having a first supply roller and a first discharge roller to transport the first recording medium; a second transporting mechanism arranged between the first supply and discharge rollers in the first direction to transport the second recording medium, the second transporting mechanism holding an overlap portion, of the second recording medium, overlapping in the first direction with a portion of a recording range in which the recording elements of the recording head are arranged; and a controller controlling the recording head to perform recording on the second recording medium by using only a part of the recording elements which are located to overlap with the overlap area of the second recording medium.

Abstract: With an ink jet head in which color nozzles are aligned with an interval of three times an interval of black nozzles at the right side in a scanning direction of the black nozzles, when an image is recorded by ejecting black ink and color ink superposed on each other, a first unit recording operation is repeatedly executed, in which scanning by ejecting ink from at least one of the black nozzles and color nozzles is repeated three times while moving a carriage in the scanning direction, and a recording sheet is conveyed by a predetermined amount every time scanning is completed. In the first unit recording operation, the carriage is moved to the left side while ink is ejected from both the black nozzles and color nozzles at the first scanning. Moreover, in each of the second and third scanning operations, ink is ejected only from the color nozzles.

Abstract: An inkjet image forming apparatus and a method to control the same to correct characteristics of a plurality of print heads of the apparatus to have uniform characteristics includes a plurality of test patterns printed according to the timing of printing of dots through a row of odd nozzles and a row of even nozzles of each of the plurality of print heads and information of the drive timing corresponding to a brightest test pattern of the printed test patterns is stored. When a normal print operation is performed, a different drive timing is applied to each of the plurality of print heads based on the stored information, thereby compensating for the difference between the one or more characteristics of the print heads.

Abstract: This invention corrects a print position error caused by the inclination of the nozzle array of a printhead without decreasing the printing speed. To accomplish this, print data of at least one column in the print medium conveying direction is read out for a predetermined number of bits from print data stored in a first storage unit. Print data of a plurality of columns read out in the reading step is written in a second storage unit which is higher in data input/output speed than the first storage unit, and can input/output data for each bit. It is controlled to read out print data belonging to different groups from a plurality of columns of the second storage unit, edit print data for a plurality of nozzles, and print based on the edited print data.

Abstract: The systems and methods presented herein provide for calibrating a print engine of a printing system. The printing system prints image data on a print medium and scans the printed image data. Color values of the scanned image data are then measured and various tints of color values and their transition locations are identified. A calibration module estimates the original optical densities of the identified color value tints and generates a target optical density for each of the identified color value tints using the estimated original optical densities to determine print irregularities in the color values of the scanned image data. The calibration module then generates a halftone screen based on the mean optical densities and applies the generated halftone screen to the print engine to calibrate the print engine.

Abstract: A fluid ejection device comprising firing cells including a first group of firing cells and a second group of firing cells and control circuitry. The control circuitry is configured to respond to the control signal to selectively initiate a first sequence adapted to enable the first group of firing cells for activation and a second sequence adapted to enable the second group of firing cells for activation.

Abstract: A method, a printing system and a printing bridge. The printing bridge is configured to accommodate in a precise manner a jet print head. The jet print head includes first jet nozzles for injecting a first type jettable substance to form a first pattern onto the surface of a object, and a second jet nozzles for injecting a second type of jettable substance to form a first pattern onto the surface of a object. The first type jettable substance is utilized for printing a solder mask pattern and the second type jettable substance is utilized for printing a legend pattern.

Abstract: When a number of passes of multi-pass recording has been changed, a repetitive cycle of a drive pattern is changed, depending on change of feeding amount caused by change of the number of passes. Accordingly, the drive pattern is set to a size corresponding to the changed feeding amount.

Abstract: A method for arranging liquid droplet ejection heads includes: arranging and fixing a plurality of inkjet liquid droplet ejection heads, ejecting a common functional liquid, on a common carriage plate, based on the amount of liquid droplets ejected from a number of ejecting nozzles in a nozzle row that each of the liquid droplet ejection heads has, with the heads shifted in a direction of the nozzle row, the heads being so arranged and fixed that in the heads closely aligned in the direction of the nozzle row, a difference between the amounts of liquid droplets ejected from two ejection nozzles located at each innermost end of the heads is within a predetermined range of tolerance, and the amounts of liquid droplets ejected from two ejection nozzles located at the outermost ends in the direction of the nozzle row are within a predetermined range of a reference amount.

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: An apparatus for reducing ink droplets generated by bursting bubbles within an ink developer includes a surface directing an ink flow into a channel; and a protrusion within the channel that reduces ink droplets generated by bursting bubbles entrained within the ink flow. An ink developer includes an ink source supplying ink to the ink developer; an electrode which develops a portion of the ink onto a developer roller; and a splash guard which directs an undeveloped ink flow into a channel which has a reduced cross-section area configured to reduce bubbles exiting the channel and bursting.

Abstract: A liquid droplet discharge apparatus includes a liquid droplet discharge head and a control unit. The liquid droplet discharge head includes: a plurality of main nozzles arranged in a first direction and discharging liquid droplets of main dots; and a plurality of sub nozzles arranged at end portion sides of arrays of the main nozzles and discharging liquid droplets of sub dots. The control unit is configured to control the liquid droplet discharge head to discharge the liquid droplets from the main and sub nozzles and to form sub dot arrays by the liquid droplets discharged from the sub nozzles in two arrays with being staggered at a predetermined interval in the second direction between main dot arrays by the liquid droplets discharged from the main nozzles, so as to form the dot arrays.

Abstract: An object of this invention is to increase the transfer rate of image data from a host computer to a printing apparatus. To achieve this object, a printing apparatus which divides the printing area in the printhead scanning direction into a plurality of regions and prints in each divided region in order to print by scanning the printhead on the printing medium includes a conversion circuit which rearranges image data that is transmitted from the host computer and arranged in a direction perpendicular to the data arrangement of the printhead, into image data in the same horizontal direction as the data arrangement direction of the printhead.