СПОСОБ ОБРАБОТКИ ДАННЫХ, УСТРОЙСТВО ОБРАБОТКИ ДАННЫХ, СПОСОБ ГЕНЕРАЦИИ МАСКИ И ШАБЛОН МАСКИ

... 1. Способ генерации шаблонов масок, которые используются для генерирования данных изображения для печати множества типов точек посредством сканирования, характеризующийся тем, что определяют размещение разрешающих печать пикселей в каждом из множества шаблонов масок, соответствующих множеству типов точек, для чего определяют размещение разрешающих печать точек так, что низкочастотные компоненты, которые определяются размещением разрешающих печать пикселей в каждом из множества шаблонов масок, уменьшаются в множестве шаблонов масок. 2. Способ генерации шаблонов масок, которые используются для генерирования данных изображения, для печати множества типов точек посредством сканирования, характеризующийся тем, что определяют размещение разрешающих печать пикселей в каждом из множества шаблонов масок, соответствующих множеству типов точек, для чего изменяют размещение разрешающих печать пикселей в каждом из множества шаблонов масок путем изменения размещения разрешающих печать пикселей в множестве ...

Tintenstrahlverfahren und -vorrichtung

Punktdruck mit Anwendung eines Schemas mit teilweiser Überlappung

Drucken auf nichtuniforme überlappende Weise

Druckverfahren und Gerät

Punktzuweisungsplanung in Tintenstrahldruckern

Inkjet printing with uniform wear of ink injection elements and nozzles

Inkjet printing with uniform wear of ink ejection elements and nozzles

In one embodiment of the invention, an inkjet printer selectively energizes ink ejection elements in a scanning printhead such that the top nozzles of the printhead do not always print the first line of text in a scan. In one embodiment, this is accomplished by occasionally aligning the bottommost nozzle in the printhead with the bottom of the last full line of text to be printed during the scan. The alignment of the printhead with respect to the lines of text to be printed is varied from page to page or varied at other intervals so that the top nozzles and bottom nozzles are used about equally. This will also cause more uniform wear of the middle nozzles. The more uniform wearing of the nozzles and ink ejection elements extends the life of the printhead. In inkjet printers using a black ink printhead which has a wider printing swath than one or more color ink printheads in the same scanning carriage, a new printing technique makes use of the nozzles in the wider printhead which extend ...

Method for printing

POINT PRINTING WITH APPLICATION OF A PATTERN WITH PARTIAL OVERLAP

PROCEDURE AND DEVICE FOR THE IMAGE PROCESSING

INK RADIATION PRINTING DEVICE AND - PROCEDURES USING NOT SYNCHRONIZED MASKS

INK RADIATION PRINTING PROCESS WITH MESH FRAMEWORKS

PRINTER AND PRINTING PROCESS

MATRIX PASS OF POINT OF MULTI-PASSPORT AND DEVICE WITH IMPROVED STRIP LAYERING SEQUENCE

PRINTING PROCESS OF MEANS OF A MULTIPLICITY OF CONTROL CLASSIFICATIONS OF SIGNALS

PRINTING PROCESS AND PRINTER

MIXED RESOLUTION PRINTING FOR COLOR AND MONOCHROME PRINTERS

... 19 A printer with mixed base resolution capabilities, having a higher resolution monochrome component such as black and lower resolution components such as cyan, magenta and yellow. The different resolution components are integrated into the same printing mechanism for composite printing of higher resolution black and lower resolution color at the same time. For increased throughput, a higher resolution black printhead has a wider swath.

INK JET RECORDING METHOD AND APPARATUS

A recording section of each of recording heads of different recording colors is divided into a plurality of sub-sections, and the recording heads are moved back and forth relative to a recording medium to conduct a main scan in each run, and thinned images are sequentially recorded on the same area of the recording medium by using different recording sections of the recording heads in a plurality of main scans. The numbers of dots recorded in the main scans are equal without regard to the image data to prevent ununiformity of density due to reach accuracy and amount of discharge and regular ununiformity of color due to a sequence of ink injection.

Image formation method

IMAGE RECORDING DEVICE

An image recording device comprising an input image memory, buffer memories, a position memory for storing, corresponding to respective nozzles, transfer start positions in the input image memory, transfer destination positions in respective buffer memories, and overlapped widths between the respective recording heads, a scanner, a position calculating unit for calculating transfer start positions, transfer destination positions and overlapped widths from read-in test pattern data, and an image transfer unit for transferring images in the input image memory to the respective buffer memories according to transfer start positions in the position memory, whereby the image recording device can be increased in speed and reduced in costs because there is no need of subjecting a multi-value image to geometrical correction to thereby require no devices for the correction.

PRINTERS AND CONTROLLERS

Example implementations provide a controller for controlling printing of a printer, the controller comprising: 1. A controller for controlling printing of a printer , the controller comprising:an input interface for accessing an image to be printed;an image processor to identify at least one selected feature within the image; and a. to control printing of said at least one selected feature using a respective print operation; and', 'b. to control printing of said image, other said at least one selected feature, using a further respective print operation;', 'c. said respective print operation being different to said further respective print operation., 'print control circuitry2. The controller of claim 1 , in whicha. the respective print operation has a respective number of printing operations; andb. said further respective print operation has a respective further number of printing operations;c. wherein said respective number of printing operations is less than said further respective number of printing operations.3. The controller of claim 2 , in which the respective number of printing operations is associated with a respective print mask for controlling the respective number of printing operations.4. The controller of either of and claim 2 , in which the respective further number of printing operations is associated with a respective further print mask to control the respective further printing operations.5. The controller of any preceding claim claim 2 , in which the respective print operation is arranged to print elements corresponding to said at least one selected feature using a predetermined print operation.6. The controller of claim 5 , in which the predetermined print operation comprises a predetermined numbered print operation.7. The controller of claim 6 , in which the predetermined numbered print operation is an even print operation.8. The controller of any preceding claim claim 6 , in which the respective further print mode is arranged to print elements ...

HALFTONING METHOD AND APPARATUS

A method of generating with an inkjet printer system a halftone image from image data comprising a plurality of contone data values, said system comprising a printhead arranged to print drops on a print medium whilst moving relative to said print medium in first and second directions, said method comprising the steps of: generating a first plurality of halftone data, each of said first halftone data being generated from a first proportion of a corresponding contone data value; generating a second plurality of halftone data, each of said second halftone data being generated from a second proportion of a corresponding contone data value; printing drops corresponding to said first plurality of halftone data in said first direction; and, printing drops corresponding to said second plurality of halftone data in said second direction.

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM

An image processing apparatus includes a storage and processing circuitry. The storage is configured to store a dither table in which a plurality of dither patterns are recorded, each of the dither patterns being formed with a halftone dot screen in which an output area ratio that is a proportion of void halftone dots per unit area corresponds to any one of gradation values of image data. The processing circuitry is configured to read a gradation value for each region in image data input for each toner color, decide a dither pattern to be applied to the read gradation value, read out the decided dither pattern from the dither table, and perform dither processing of applying the read dither pattern to the region in the image data.

Color printing using a vertical nozzle array head

A printer has a print head including a plurality of dot formation element groups for forming dots of different inks where the plurality of dot formation element groups are arrayed in a prescribed order in the sub-scanning direction. The dot formation elements of each group are arranged at an identical pitch k in the sub-scanning direction. The pitch k is set at an integer multiple value that is at least two times a pitch of dots formed on the print medium in the sub-scanning direction. Dot forming is executed while using a mutually equal number N of dot formation elements of each group arrayed at the pitch k where N is an integer of at least 2. The N dot formation elements of each group are selected so that a spacing between the groups of the N dot formation elements is M times the pitch k where M is an integer of at least 2.

Recording apparatus and method for controlling the recording apparatus

A recording apparatus (103) includes a recording head (113) configured to scan a recording medium and record an image on the recording medium. The recording apparatus includes a recording buffer (104) to store image data representing one pixel with a plurality of bits, a reading unit (105) to read, from a storage area of the recording buffer, image data corresponding to a region including a boundary between two regions recorded on the recording medium in successive scanning and recording operations, a thinning unit (109) to thin out image data based on a thinning rate corresponding to the image data read by the reading unit, a storage unit to store image data thinned out by the thinning unit in the storage area of the recording buffer, a quantization unit to perform quantization processing on the image data stored in the recording buffer when the image data is transferred to the recording head, and a recording unit to perform recording based on the image data quantized by the quantization ...

Improvements in automated and semiautomated printmask generation for incremental printing

Ink-jet recording device, image-processing device, and image-processing method

Color processing is performed for image data, so as to switch generating methods for black data to perform appropriate sharpness processing regarding image data wherein sharpness of printing results is important and image data wherein gradation of the image is important. A recording device (200) is provided, wherein by performing such processing, black images such as characters or lines maintain sharpness or clarity, and picture images can be formed as high quality images.

DIGITAL PRINTING APPARATUS AND METHOD

Non-uniform overlap printing

СПОСОБ ОБРАБОТКИ ДАННЫХ, УСТРОЙСТВО ОБРАБОТКИ ДАННЫХ, СПОСОБ ГЕНЕРАЦИИ МАСКИ И ШАБЛОН МАСКИ

FIELD: technological processes; printing industry. SUBSTANCE: method of mask templates generation, used for generation of image data for printing of multiple types of points by means of scanning, is characterised by the fact that location of printing-permitting pixels is determined in every of multiple mask templates that correspond to multiple types of points, for that purpose location of printing-permitting points is determined, so that low frequency components, which are determined by location of printing-permitting pixels in every of multiple mask templates, are reduced in multiple mask templates. Method of data processing contains stage, at which image data is generated, which provides printing of multiple point types by means of corresponding multiple scanning, using mask template. Device of data processing, which contains facility for generation of image data, provides printing of multiple point types by means of corresponding multiple scanning, using mask template. For generation of image data for printing of multiple point types by means of corresponding scanning multiple mask templates are used, at that when at least two of multiple mask templates are superimposed one above each other, template of printing-permitting pixels from imposed mask templates has less low frequency components compared to the template produced by imposition of at least two mask templates, at which they substitute each other. Invention is produced as a result of deposition caused by grains, which may be formed during separate printing, and also elimination of problems caused by formation of such grains. EFFECT: higher image quality. 49 cl, 93 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 337 009 (13) C2 (51) ÌÏÊ B41J 2/01 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2006143050/12, 06.07.2005 (72) Àâòîð(û): ÌÀÐÓÌÎÒÎ Éîñèòîìî (JP) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 06.07.2005 ( ...

Verschachtelter Tintenstrahldruck

Schneller Aufbau von Masken zur Verwendung im inkrementalen Drucken

Maskendruck, abhängig von Auflösung und Farbe

Aufzeichnungsverfahren

A printing head (1) with printing elements (11) arranged in a main direction (12) is moved to and fro linewise (5) in relation to a substrate (2), whereby, where necessary, printing points (DP) are generated according to predetermined printing data (VD) at raster positions (RP) of a print line (DZ) consisting of microlines (MZ1, ..., MZ8). The printing points (DP) are allocated to a first (DM2) and at least a further, supplementary printing pattern (DM2), whereby one of the printing patterns (DM1, DM2) is generated during each printing head movement. The printing points (DP) are allocated to the printing patterns (DM1, DM2) alternately microlinewise in such a way that adjacent printing points (DP) in a microcell (MZ1) are contained in different printing patters (DM1, DM2) between the generation of the printing patterns (DM1, DM2) o f a microline (MZ1), the substrate (2) is preferably advanced in relation to the printing head (1). Adjacent printing points (DP) in a microline (MZ1) are thereby ...

Inkjet printing with uniform wear of ink ejection elements and nozzles

COLOR RADIATION RECORDING METHOD AND DEVICE

PROCEDURE AND DEVICE FOR THE INK RADIATION RECORDING

PRINTING ARRANGEMENT AND PROCEDURE FOR THE DEPOSIT OF A SUBSTANCE

METHOD AND APPARATUS FOR THREE-DIMENSIONAL DIGITAL PRINTING

Techniques are presented for digital ink jet printing upon a substrate with a significant third dimension. Droplets in the range of 120 pL to 200 pL have been found suitable for substrates with variability, in the third dimension, of up to approximately 4 cm. A larger droplet can be generated by utilizing a plurality of drive pulses, each of which generates a smaller droplet, and having the plurality of smaller droplets combine in mid-air. The data to be printed can be derived from a 3D model and such 3D model can also be used to guide shaping of the substrate. The 3D model can be produced from 2D image data. If the 2D image data is a two-dimensional portrait photograph, a result, of using the present invention, can be a realistic portrait in the form of a bas-relief sculpture.

MEANS FOR HIGHER SPEED INKJET PRINTING

A method and apparatus for subdividing and printing regions of a substrate with multiple print heads or multiple print head assemblies which substantially decreases printing time is described. The method includes a feathering method which reduces overlap artifacts which is useful in any printing situation where adjacent regions are printed that could be misaligned, offset, or have slightly different colors.

Mask registers to store mask data patterns

In some examples, a fluidic die includes a plurality of fluid actuators, an actuation data register to store actuation data that indicates each fluid actuator of the plurality of fluid actuators to actuate, and a plurality of mask registers to store respective different mask data patterns, each mask data pattern of the different mask data patterns indicating a respective set of fluid actuators of the plurality of fluid actuators enabled for actuation for a respective actuation event.

Staggered pens in color thermal ink-jet printer

A color ink jet printer including a print carriage movable along a carriage scan axis and a plurality of color producing ink jet printheads supported by the print carriage and offset relative to each other so that their nozzle arrays are non-overlapping along the media scan axis, such that the nozzle arrays of the ink jet printheads traverse non-overlapping regions as the carriage is scanned along the carriage scan axis.

Maximum-diagonal print mask and multipass printing modes, for high quality and high throughput with liquid-base inks

Full-color swaths produced in opposite scanning directions are offset to conceal or eliminate the color-cast effects of the varying deposition order which is inherent in bidirectional operation with in-line pens. Offsets are produced by unequal printing-medium advance between oppositely directed sweeps, or by alternating forward and reverse advance steps between oppositedly directed sweeps, or by both unequal and alternate-reverse steps; or by pen masking. Color-cast effects of varying drying/wicking time, too, are minimized.

Real-time interlace adjustment based on predicted image quality

Systems and methods of marking control achieve improved image quality in a multipass marking process by taking into account positioning errors that have already occurred in prior marking passes while building the image, and compensates for them in real-time by modifying the remaining interlace locations of the marking subsystem in order to minimize predicted image quality defect perception in the resultant image. The adjustment are preferably based on minimizing a defect perceivability metric. One such suitable metric is a frequency metric, preferably the power spectral density of the resultant image evaluated at the fundamental frequency (1/D), where D represents the spacing of marking devices, such as the spacing of print head nozzles.

Dither pattern forming method and dither pattern

In order to print a unit area of a print medium by a first printing scan and a second printing scan, dither patterns are formed which can control the arrangement of dots on the print medium without adverse effects of density unevenness and graininess, that are caused by printing position displacement. Regarding first and second dither patterns, information indicating whether or not a threshold is already set to a reference pixel and one or more pixels around the reference pixel in the first dither pattern is obtained for cases where each pixel in the first dither pattern is the reference pixel. A pixel in the second dither pattern to which a predetermined pixel is to be set is determined based on the obtained information. The first and second dither patterns formed in the above manner are associated with the first printing scan and the second printing scan, respectively.

Inkjet printing apparatus and printing method therefor

The printing elements of each printing element array are divided into blocks. A block to be driven and a block not to be driven are determined for each scanning of a printhead. The printhead is driven to print by complementing blocks to be driven by each scanning in a plurality of scanning operations. In each scanning, the printhead prints while making a printing area corresponding to at least one ink different from a printing area corresponding to another ink.

Print control method and apparatus, and printing apparatus using the same

A print control method and apparatus for performing printing by executing image processing on inputted image data and generating print data to be outputted to a printer, and a printer using the print control method and apparatus. First, the highest density value of the inputted image data is reduced by a predetermined amount, and the image data is subjected to binarization for generating print data to be inputted. Alternately, masking processing is performed on the image data by using a mask pattern which is generated in accordance with the type of ink, the color of ink or the type of print medium, so as to prevent dots that are consecutive in a printed image, thus preventing image deterioration.

Image processing method and apparatus

Printing on an area of a printing medium in which printing locations may be significantly deviated due to inaccurate feeding of the printing medium can be performed, without degrading image quality. Specifically, when lines in this area (second area) are printed using four scanning operations (passes) of a print head, a duty in masking process is set at zero for the scanning operation (pass A) after a change-line operation for feeding the printing medium with a possible large shift feeding error, and is distributed to other scanning operations. Thus, no dots are formed during this scanning operation (pass A), thereby preventing significantly deviated dots from being formed.

Image processing apparatus, printing apparatus and image processing method

A dither pattern is formed in such a manner that threshold values 1 to 16 are dispersed in regard to the order of magnitudes of the threshold values. First, there is made a calculation of multiplying each value of the image data by a ratio of 1/2. Thereby, there is produced the divided 17-valued data where every value of all pixels is "2". Next, binarization is carried out for the divided data by using the dither pattern. As a result, binary data at the first pass is obtained. Next, there is obtained the data by a product of a ratio (1/2+1/2) obtained by adding 1/2 to the above ratio and each value of the image data. Binarization is carried out for the image data by using the dither pattern. This produces binary data. Finally, dot data for the second pass is obtained by subtracting data from the binary data.

LIQUID DROPLET DISCHARGE APPARATUS, MASK PATTERN, AND LIQUID DROPLET DISCHARGE METHOD

The liquid droplet discharge apparatus (ink jet printer) includes a head having a nozzle row in which nozzles capable of discharging liquid droplets onto paper as a medium are aligned, and a carriage unit as a movement portion which moves the head relatively to the paper, the ink jet printer discharging the liquid droplets onto the paper through the nozzles by causing the head to perform main scanning a plurality of number of times by the carriage unit. In the ink jet printer, when a region from a nozzle at one end to a first nozzle located at a position away from the nozzle at the one end by a first predetermined distance is set to a first region, a region from a nozzle at the other end at an opposite side to the one end to a second nozzle located at a position away from the nozzle at the other end by a second predetermined distance is set to a second region, and a region between the first region and the second region is set to a third region on the nozzle row, a thinned-out portion is ...

IMAGE PROCESSING APPARATUS, METHOD THEREOF, AND IMAGE FORMING APPARATUS

In order to obtain a smooth gradation reproduction in an image to be formed, an image processing apparatus inputs first data of an image to be formed which includes a color and second data of the image to be formed which does not include the color and has continuous gradation; determines printing material amount data corresponding to the first data; determines, based on the printing material amount data, a dot pattern when forming the image by performing a printing scan a plurality of times on a printing medium; and generates, based on the second data, a switching signal that switches each pixel in accordance with an area ratio of each of a first dot pattern and a second dot pattern.

APPARATUS, METHOD, AND STORAGE MEDIUM

According to an aspect of the embodiments, in multi-tonal image data in which each of pixels is represented by bit data of M bits (M≥2), reduction processing is performed by applying a mask pattern to the bit data to be thinned out without increasing load of calculation processing.

Image processing method and apparatus

Complementary recordin system using multi-scan

An image forming apparatus is shown in Figure 1 to form in image on a recording material (101) using a plurality of recording heads for recording dots of the same color. Allocating means is provided by the apparatus and allocates multi-level image data corresponding to the predetermined region. A driving means drives the print heads in response to reduced gradation image data provided by a gradation reducing means.

Reduction of banding in incremental printing, through selection among colorimetric equivalents

Method and apparatus for printing computer generated images

A method of multipass inkjet printing of images in response to digital images having code values includes providing an inkjet printer capable of printing at least two ink drops at each printing location during different passes, including a printhead which can select at least two different ink drop sizes, and selecting a number of passes for producing an image and providing a print mask having mask values which, in each pass, sequentially corresponds to predetermined pixels and, in response to the mask values and the code values of such pixels, operates the inkjet printer to select the ink drop size for each pixel in each pass so that the inkjet printer produces an image.

Printing in selected record mode with reduced displacement of raster lines

The technique of the present invention enables a desired dot record mode to be readily set for an individual dot recording apparatus. The procedure generates first displacement data, which represents deviations of dot recording position in a sub-scanning direction intrinsic to respective dot forming elements, as well as second displacement data, which represents errors of sub-scan feed. The procedure then selects a desired dot record mode among a plurality of dot record modes having identical resolution and recording speed but different combinations of feeding amounts of sub-scan, based on the first displacement data and the second displacement data. The dot recording apparatus then carries out main scan and sub-scan with a dot record head to record dots on a printing medium in the selected dot record mode.

Reduction of periodic artifacts in incremental printing

Periodic inking artifacts are reduced by randomness (82) introduced into an image-processing stage (73). Preferably a superpixel (87) is selected, essentially at random, from a plurality of superpixels (84) - at least for points with an intermediate tonal level, which is the part of the tonal range where dot-placement error is most conspicuous. If image scaling (78) or some other reason for using superpixels (and starting with a coarse grid) is not present, the randomness introduction approach preferably includes preparing (86) the image (71) using a pixel grid that is coarser than the available printer resolution. The selected superpixel (87) is applied at the coarser grid to define a set of individual pixels at printer resolution. A major preference relates to printing in sequential printing passes: a printmasking stage downstream and distinct from the image-processing stage, is used to establish temporal assignments of inking into the plural passes. For printing systems that already ...

Aufzeichnungskopfanordnung für Tintenstrahlaufzeichnungsgerät und Betriebsverfahren dafür

Maskenerzeugungsverfahren und Drucker für Tintenstrahldruck

Verfahren, um Defekte von Druckelementen eines Druckers zu tarnen

Verfahren, um Defekte von Druckelementen eines Druckers zu tarnen

Druckverfahren und Drucker

PROCEDURE, AROUND DEFECTS OF DRUCKELEMENTEN OF A PRINTER FOR CAMOUFLAGING

GESCHACHTELTER INK RADIATION PRINTING

COLOR RADIATION RECORDING METHOD

INK BLASTING PROCEDURE AND - DEVICE

PRESSURES IN SELECTED KIND OF RECORDING WITH REDUCED ADJUSTMENT OF THE GRID LINES

MASK PRODUCTION FOR COLOR INK RADIATION PRINTING

Method of interlaced printing using an inkjet printer

INK JET RECORDING METHOD

Image data is thinned out by using thinning patterns having arrays not synchronized with an image data array according to an area gradation method at the same duty, and the resulting thinned image data is divisionally recorded on a predetermined area of a recording medium by using different record areas of a recording head while a scan operation is performed a plurality of number of times. The thinning patterns are formed such that substantially equal quantities of an ink are implanted in a plurality of number of times of the divisional recording.

Inkjet recording method, and inkjet recording apparatus

MERGING IMAGE PIXELS BASED ON MAIN-SCAN MISALIGNMENT

A method for reducing visible artifacts among image pixels formed on recording media by a plurality of individually addressable recording channels includes operating the recording channels to form a plurality of image pixel arrangements, wherein each image pixel arrangement comprises a plurality of image pixel columns extending along a first direction. The image pixels columns in each image pixel arrangement are arranged along a second direction that intersects the first direction. The recording channels form a first image pixel arrangement on the recording media and overlap a first image pixel column with a second image pixel column by an amount along the second direction that is determined based at least on a misalignment along the first direction between two of the image pixel arrangements.

Printing of digital images using reduced colorant amounts while preserving perceived color

A method for modifying an input digital image having an (x,y) array of image pixels, each image pixel having an input code value for each of four or more color channels, to produce a depleted digital image subject to a total colorant amount limit. The method includes determining depleted code values for each color channel such that the depleted code values produce substantially the input perceived color according to a device color model.

Method of camouflaging defective print elements in a printer

A method of camouflaging defective print elements in a printer having a printhead with print elements, and each pixel of the image is assigned to a print element, and image information of a pixel that is assigned to a defective print element shifts to a nearby pixel position capable of printing with a non-defective print element. Shifting the image information includes the steps of a) encoding the image information to be printed as a multi-level pixel matrix in which one of a predetermined set of pixel values (“0”, “1”, “2”) is assigned to each pixel and at least one of the pixel values is a conditional pixel value (“1”) encoding a print instruction that depends upon whether or not a neighbouring pixel corresponds to a defective print element, b) determining defective print elements of the printer, and c) executing the print instruction.

Multipass inkjet printmodes with randomized dot placement, to minimize patterning and liquid loading

Color inkdrops form on a print medium in at least partly overlapping swaths. Apparatus holds and provides--or generates in real time--data defining a generally randomized printmask, which is applied to control working parts of an inkjet printer. Preferably the apparatus establishes an elemental pixel subgrid of rows and columns, used in determining inking patterns essentially throughout the image; and stores in the pixel subgrid a previously generated, generally randomized selection of pixel columns for printing of an inkdrop, in each subgrid pixel row--and conversely an analogous selection of pixel rows for printing a drop in each subgrid pixel column. Also preferably the generally randomized selection is subjected to location rules as to pixels above and to at least one side of each pixel. Numerous specific masks are specified as pass-number patterns, including an eight-by-eight "knight" array, two sixteen-by-five arrays, a sixteen-by-ten array, and several four-by-four arrays. Another ...

Half-tone printing with thermal ink jet using random spot distribution in one dimension

Areas of a predetermined gray-scale in a desired image are printed on a sheet by a linear array of ink-jet ejectors. The individual ejectors are operated according to a probability function which controls the frequency of a random activation of the ejectors as the sheet moves past the ejectors. The frequency of activation is a function of the desired gray-scale of the area being printed. The resulting spots on the sheet are distributed in uniform lines in one dimension and randomly in another dimension.

Double axis dot depletion for 600 DPI edge acuity with 300 DPI print cartridge

Techniques are disclosed for depleting raster data to allow printing of the depleted raster data on a grid that corresponds to the resolution of the undepleted raster data with a printed dot size that is larger that would otherwise be utilized with the undepleted raster data and to achieve faster ink dry time. Also disclosed is a technique for up scaling raster data at a particular resolution (e.g., 300 dpi) to a higher resolution in such a manner that expanded data includes a greater number of dot producing pixels to compensate for a dot size that is larger than the dot size that is appropriate for the higher resolution, and does not require horizontal depletion for printing with such dot size. This allows raster data at a particular resolution to be combined with higher resolution rasterized vector data for printing in accordance with the enhanced mode of operation.

Dot printing using partial overlap scheme

A print head has a nozzle array to achieve printing of dots of identical color along a plurality of main scanning lines during a main scanning pass, and to achieve formation of multiple dots of the color at a substantially fixed pitch in a sub-scanning direction. Partial overlap printing is effected, using a specific part of the plurality of dot forming elements, by executing dot printing in one main scanning pass on at least one target main scanning line which is also a target of dot printing during another main scanning pass.

Print masks for multiple pass print modes

Print masks for multiple pass print modes are described herein. In at least some examples herein, the print mask includes mask matrices. The mask matrices define a single nozzle actuation pattern. The nozzle actuation pattern is irregular. In at least some examples herein, techniques for printing of an image on a substrate are described. During printing the image on the substrate a print mask is applied such that, for each pass, the inkjet nozzles in the print head are actuated according to the single nozzle actuation pattern.

Image recording apparatus, image recording control method, and storage medium

As a thinning pattern which is used in a multipass recording method, plural mask patterns are created according to a printing mode from a pseudo periodic mask arrangement that an arrangement of non-recording pixels and recording pixels becomes visually preferable when binarization is performed at an arbitrary level. Thus, as compared with a mask pattern based on a random number, generation of a repetitive pattern and deterioration of graininess can be lowered, and the number of memories for storing the mask patterns can be reduced.

Data generation apparatus, inkjet recording apparatus, and data generation method

An apparatus for generating data used to apply a plurality of inks similar in color and different in color material density, including a first ink and a second ink higher in color material density than the first ink, onto a pixel area on a recording medium with a recording head includes a generation unit configured to generate the data in such a way that out of a plurality of pixels constituting the pixel area, a number of pixels onto which dots of the first ink are applied in an overlapped manner is greater than a number of pixels onto which dots of the second ink are applied in the overlapped manner.

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

While high print resolution, high image quality mode and a low print resolution, high speed mode are provided, image processes are made in common between them to the extent possible, and the same gradation characteristics and image densities can be obtained between them. For this purpose, for the high image quality mode, a dot arrangement pattern is prepared for a pixel region having gradation data of K levels, which determines the presence or absence of print dots at K-1 areas, and in which the printing of 1 dot is permitted at all of the K-1 areas. On the other hand, for the high speed mode, a dot arrangement pattern which determines the presence or absence of print dots at a number of areas less than K-1 is prepared, and in which the sum of the number of dots permitted to be printed at the pixel region is K-1.

Image processing apparatus and image processing method

In image processing, it is possible to suitably reduce density unevenness and graininess according to the ink used in printing. More specifically, when dividing multi-valued data and generating data for 2-pass multi-pass printing, in addition to divided multi-valued data for each of the two passes, divided multi-valued data that is common to the two passes is also generated. Moreover, quantized data of that common multi-valued data is reflected on the quantized data for each of the passes. Furthermore, when generating the quantized data, the division ratios used when generating the common data using the aforementioned multi-valued data division are set according to the colors of ink used in printing. By doing so, it becomes possible to suitably reduce density unevenness and graininess according to the colors used in printing.

Print smoothing method

In a method of dot matrix printing, a swath of ink dots is laid down on a printable medium during a pass of a printing head. The dots represent a portion of the print data of the image. The swath comprises a central zone (9) and a peripheral zone (7,8), the central and peripheral zones extending along the swath and the average concentration (1) of ink dots in the peripheral zone is lower than the average concentration of ink dots in the central zone. At least the peripheral zone is overlapped by a subsequent swath, which at least partially compensates the lower average concentration of ink dots. The concentration of ink dots in the peripheral zone gradually decreases from a higher concentration at the border with the central zone towards zero at the border of the swath.

Image Forming Apparatus and Computer Program Product

An ink-jet image forming apparatus (60) for scanning a recording medium (12) in a main scanning direction by an ink-jet head (7), and conveying the recording medium in a sub scanning direction so that a printing area formed at every scan by the recording head overlaps with an adjacent printing area at their boundary area. The apparatus includes a distribution determining unit (606) that determines a dot distribution at every scan in the overlapped boundary area, a nozzle determining unit (610) that determines an alternative nozzle capable of forming dots instead of an non-ejectable nozzle in the overlapped boundary area, and a dot determining unit (612) that determines a dot size or a dot density from the alternative nozzle, on the basis of a printing position by the alternative nozzle and the dot distribution determined by the dot distribution determining unit.

Method of processing document image data

The present invention is directed to a method for differentially processing image types within a document image to enhance the quality of on an image on a receiving medium. In one aspect of the invention, the method begins by receiving document image data (170) including one or more image regions. The method determines (174) for each image region whether the region includes any image data corresponding to a first image type. The method then prints regions including image data corresponding to the first image type according to a first pixel management process and prints regions not including image data corresponding to the first image type according to a second pixel management process.

Apparatus and method for hue shift compensation in a bidirectional printer

An printing apparatus and method for reducing hue shift due to differing deposition orders of different color ink drops. A differing deposition order occurs in bidirectional inkjet printers (10) with printheads (12) that deposit overlapping drops in a single scan in either a forward (2) or rearward (4) direction. Different print masks (62,64) for each color ink are used to govern ink drop deposition in the different scan directions (2,4) in order to vary the deposition order and/or number of drops deposited in a given location (19). A different mask pattern (110,112) is applied to a top (76) and bottom (78) set of nozzles corresponding to the print advance height. This technique reduces the perceived difference in color shade between an area (80a) of a composite color printed in the forward direction (2) followed by the rearward direction (4), and an area (80b) of the same composite color printed in the rearward direction (4) followed by the forward direction (2). An inkjet printer (10) ...

PRINTER, PRINTING METHOD, PRINTING CONTROLLER AND PROGRAM

PROBLEM TO BE SOLVED: To provide a printer or the like which can obtain printing images of a uniform image quality even if nozzle groups has individually different ink discharge characteristics when printing is carried out by using a plurality of the nozzle groups. SOLUTION: The printer is equipped with a transfer unit which transfers a medium in a transfer direction, the plurality of nozzle groups each with a plurality of nozzles arranged in the transfer direction, and a controller. A plurality of dot trains composed of a plurality of dots aligned in a movement direction are arranged and formed in the transfer direction by alternately repeating a dot formation process of forming dots to the medium by discharging ink from each nozzle of the plurality of nozzle groups that move in the movement direction, and a transfer process of transferring the medium in the transfer direction. Thus the controller makes a printing image printed to the medium. When the number of nozzles for forming a dot ...

INKJET RECORDING METHOD AND INKJET RECORDING APPARATUS

PROBLEM TO BE SOLVED: To provide an inkjet recording method and an inkjet recording apparatus, which can bring about a high-resolution image with improved bronzing resistance, gloss and fretting resistance, and with no muddiness of color, even if a color image is formed by printing a pigment ink on a recording medium in accordance with an irregular thinned-out pattern. SOLUTION: The inkjet recording method and the inkjet recording apparatus make a recording head perform a scan on the same area of the recording medium a plurality of times, make the irregular thinned-pattern formed, and make the color image formed by printing each ink. In this case, a nozzle pitch of the recording head is in the range of 10-50 μm; each ink contains a pigment, a high-boiling-point organic solvent and water; at least one of the respective inks contains a compound which is expressed by general formula (I), and has a surface tension of 30-50 mN/m; and the recording medium has a void layer including a hydrophilic ...

INKJET RECORDING METHOD AND INKJET RECORDING APPARATUS

PROBLEM TO BE SOLVED: To solve such a problem that large air streams generated along with the high-duty ink discharge may invite an ejection failure caused by ink mists which are raised up in a large amount and attach to the ejection orifice surface when two adjacent ejection orifice groups each have a high duty. SOLUTION: The inkjet recording method and inkjet recording apparatus prevent both of adjacent ejection orifice groups from operating at high duties. For implementing this purpose, the method includes distributing image data such that the ejection duty of one of the adjacent ejection orifice groups is lower than a predetermined threshold in one scan and the ejection duty of the other ejection orifice group is lower than the predetermined threshold in another scan. COPYRIGHT: (C)2005,JPO&NCIPI ...

Tintenstrahldruck: Rotation des Maskenmusters nur an Seitenenden: Mehrfach-Durchlauf-Modi auf Qualität und hohem Durchsatz auf Kunststoffdruckmedien

Farbstrahlaufzeichnungsverfahren und Vorrichtung

Farbstrahlaufzeichnungsverfahren

Verringerung von periodischen Artefakten in inkrementellem Druck

Verfahren und Vorrichtung für Farbtintenstrahldruck mit Mehrfach-Durchlauf

PROCEDURE AND DEVICE FOR THE INK RADIATION RECORDING

PRESSURES ON NICHTUNIFORME OVERLAPPING WAY

Image processing method and image processing apparatus

Provided is an image processing apparatus and image processing method that are capable of outputting an image wherein seam lines caused by sudden conveyance error are difficult to notice even for a small number of multi passes printing. In order to achieve this, the number of dots that are printed in pixels is adjusted according to the density level so that the number of dots that are printed in pixels corresponding to boundary portions is larger than in pixels corresponding to areas that are not boundary portions, and so that the number of dots that are printed in pixels corresponding to boundary portions increases the higher the density level of the pixels is. As a result, it is possible to avoid the occurrence of white stripes in high-density areas without emphasizing black stripes in low-density areas.

Method and Apparatus For Three-Dimensional Digital Printing

Techniques are presented for digital ink jet printing upon a substrate with a significant third dimension. Droplets in the range of 120 pL to 200 pL have been found suitable for substrates with variability, in the third dimension, of up to approximately 4 cm. A larger droplet can be generated by utilizing a plurality of drive pulses, each of which generates a smaller droplet, and having the plurality of smaller droplets combine in mid-air. The data to be printed can be derived from a 3D model and such 3D model can also be used to guide shaping of the substrate. The 3D model can be produced from 2D image data. If the 2D image data is a two-dimensional portrait photograph, a result, of using the present invention, can be a realistic portrait in the form of a bas-relief sculpture.

Controlling device for causing print performing unit to perform print

In a case where N1 lines (N1 being less than N which is a number of nozzles included in one nozzle line) of target line image data represent N1 lines of target line images to be printed by only one specific color of ink, and (N−N1) lines of remaining line image data include line image data which represents a line image to be printed by two or more colors of ink, the controlling device may select only the N1 lines of target line image data, so as to determine the opposite direction of the direction of the main scanning of a previous time as the direction of the main scanning of a present time.

Printing apparatus and printing method

With respect to a configuration for performing printing in an inkjet method, the disclosure implements a more appropriate configuration in which it is difficult for the quantity of printing to deteriorate. This configuration includes a head unit ( 12 ), a main scan driver ( 14 ), and a controller ( 20 ). When main scan operations are performed, the controller ( 20 ) performs control with respect to the same area on the medium ( 50 ) such that the head unit ( 12 ) ejects ink drops of one selected color onto a plurality of first selection pixels selected on the basis of a first mask data item and a plurality of second selection pixels selected on the basis of a second mask data item different from the first mask data item in the arrangement of a plurality of pixels to be selected.

Means for Higher Speed Inkjet Printing

A method and apparatus for subdividing and printing regions of a substrate with multiple print heads or multiple print head assemblies which substantially decreases printing time is described. The method includes a feathering method which reduces overlap artifacts which is useful in any printing situation where adjacent regions are printed that could be misaligned, offset, or have slightly different colors. 1. An inkjet pagewidth printer for printing on a print medium and comprising:a printhead assembly including a first nozzle array and a second nozzle array, each nozzle array having a plurality of nozzles, each nozzle array being configured to deposit droplets of ink on the print medium such that the two nozzle arrays both deposit droplets of ink in an overlapping transition region of the print medium, wherein, for each nozzle array, the plurality of nozzles includes a number of nozzles disposed to deposit droplets of ink within the overlapping transition region; anda print firing controller coupled to both nozzle arrays and configured to generate print firing signals for each nozzle array, wherein the print firing signals for each of the number of nozzles in the first nozzle array are generated utilizing a first halftone mask and a first feathering function and wherein the print firing signals for each of the number of nozzles in the second nozzle array are generated utilizing a second halftone mask and a second feathering function, the second halftone mask being substantially uncorrelated with the first halftone mask, to achieve a desired print density of the droplets of ink, and wherein the print firing controller is further configured to generate the print firing signals for the first and second nozzle arrays to match and correct nozzle array colors.2. The inkjet pagewidth printer of wherein the print firing controller is configured to generate the print firing signals for the first and second nozzle arrays to correct for color non-uniformity by using a ...

PRINTING APPARATUS AND PRINTING METHOD

A printing apparatus for performing printing in an inkjet mode includes an inkjet head, and a controller. The controller controls the inkjet head such that the inkjet head performs printing on a medium in a multi-pass mode. In each printing pass performed on each position of the medium, the controller controls the inkjet head such that the inkjet head ejects ink drops onto pixels designated by a mask data item. In a case where the spatial frequencies of the arrangement of ink dots formed on the medium during a first printing pass of the printing passes are referred to as first frequencies, and the spatial frequencies of the arrangement of ink dots formed on the medium during a second printing pass later than the first printing pass are referred to as second frequencies, the first frequencies are frequencies lower than the second frequencies. 1. A printing apparatus for performing printing in an inkjet method , comprising:an inkjet head for ejecting ink drops toward a medium;a main scan driver for driving the inkjet head to perform main scan operations in a main scan direction;a sub scan driver for relatively moving the inkjet head and the medium in a sub scan direction perpendicular to the main scan direction; anda controller for controlling ejection of ink drops from the inkjet head, and driving of the main scan driver and the sub scan driver,wherein the controller repeats a predetermined number of printing passes of ejecting ink drops from the inkjet head while moving the inkjet head in the main scan direction, whereby printing is performed on the medium, andthe controller controls ink drop ejection on a basis of mask data items for designating pixels to be subjected to ink drop ejection, such that spatial frequencies of an arrangement of ink dots which are formed on the medium during a first printing pass are lower than spatial frequencies of an arrangement of ink dots which are formed on the medium during a second printing pass later than the first printing pass ...

PRINTERS AND METHODS OF CONTROLLING SAME

A method of controlling a printer to print a pattern using a number of print head dies, each print head die including a number of nozzle trenches wherein each one of the number of nozzle trenches is associated with a different color, wherein the nozzles of neighboring dies overlap in respective overlap zones, the method comprising applying masks to the nozzles of neighboring dies in the respective overlap zones to distribute, in the overlap zones, the pattern to be printed between the nozzles of the respective neighboring dies, wherein the masks, in the overlap zones, retain the order in which the nozzles of selected nozzle trenches associated with a selected one of the colors are fired. 1. A method of controlling a printer , the method comprising:controlling, using a printer controller, a print engine to print a pattern using a number of print head dies, each print head die including a number of nozzle trenches wherein each one of the number of nozzle trenches is associated with a different color, wherein the nozzles of neighboring dies overlap in respective overlap zones, andapplying masks to the nozzles of neighboring dies in the respective overlap zones, using the printer controller, to distribute, in the overlap zones, the pattern to be printed between the nozzles of the respective neighboring dies,wherein the masks, in the overlap zones, retain the order in which the nozzles of selected nozzle trenches associated with a selected one of the colors are fired.2. The method of wherein the nozzles of the selected nozzle trenches claim 1 , in the overlap zone claim 1 , are controlled to be fired after the nozzles of all other nozzle trenches have been fired.3. The method of wherein the nozzles of the selected nozzle trenches claim 1 , in the overlap zone claim 1 , are controlled to be fired before the nozzles of all other nozzle trenches are fired.4. The method of wherein the print head dies extend along a print head axis direction and neighboring dies are staggered ...

Image processing apparatus, image processing method, and storage medium

Provided are an image processing apparatus, an image processing method, and a storage medium that can contribute to formation of electric circuits having different resistance values without causing increase in cost. The image processing apparatus generates print data for printing an electrically conductive print image on a print medium by ejecting a metal particle-containing ink from ejection device, the image processing apparatus has: a setting unit configured to set a printing condition based on a resistance value of the electrically conductive print image so as to change at least one of an amount of ink droplets of the metal particle-containing ink contacting each other and a time to be taken for ejected metal particle-containing ink droplets to contact each other; and a generation unit configured to generate the print data based on image data for the electrically conductive print image and the printing condition.

RANDOM WAVE MASK GENERATION

Example implementations relate to random wave mask generation. Some examples may distribute data points in a mask area based on a probability density function. The probability density function may have a maximum probability density located at a first edge and a second edge of the mask area. Some examples may also identify a wave curve that fits the data points. The wave curve may include oscillating waveforms of varying amplitudes. Some examples may also generate a random wave mask based on the wave curve. 1. A device for random wave mask generation comprising:a data point distribution engine to distribute data points in a mask area based on a probability density function, the probability density function having a maximum probability density located at a first edge and a second edge of the mask area;a wave curve identification engine to identify a wave curve that fits the data points, the wave curve including oscillating waveforms of varying amplitudes; anda random wave mask generation engine to generate a random wave mask based on the wave curve.2. The device of claim 1 , wherein distributing the data points in the mask area comprises:identifying a first axis range for each of the data points along a first axis of the mask area; andidentifying a set of mask area coordinates for each of the data points by applying the probability density function, the probability density function being applied based on the first axis position.3. The device of claim 2 , wherein:the first axis is parallel to the first edge; andthe first axis position is based on a length of the first edge and a first axis interval between each of the data points.4. The device of claim 1 , wherein identifying the wave curve that fits the data points includes fitting a smooth curve that approximates the data points to generate the oscillating waveforms.5. The device of claim 4 , wherein fitting the smooth curve comprises creating a fifth degree b-spline based on the data points.6. The device of claim 1 ...

VARIABLE SMOOTHING IN PRINTING

Methods, apparatus and systems for printing an image using an array of nozzles are described. In one example aspect, a printer system includes an array of nozzles and a control device coupled to the array of nozzles. The control device is configured to determine a step size for printing a current section of an image based on a set of masks. The set of masks includes one or more masks used for printing previous sections of the image. The control device is also configured to adjust the set of masks based on a printing mode to be used for the current section of the image. The array of nozzles is configured to print the current section of the image using a combination of the adjusted set of masks. 1. A printer system , comprising an array of nozzles and a control device , wherein the control device is configured to control the array of nozzles to:print, in a first printing mode, a first section of an image using a first mask, wherein the first mask is associated with a first printing rate;determine a second mask based on a switch from the first printing mode to a second printing mode, wherein the second mask is associated with a second printing rate;determine a step size for printing a second section of the image based on the first printing rate associated with the first mask and the second printing rate associated with the second mask; andprint the second section of the image using the determined step size.2. The printer system of claim 1 , wherein the step size is determined based on a smaller printing rate of the first printing rate and the second printing rate.3. The printer system of claim 1 , wherein a set of active masks used for printing the image comprises the first mask and the second mask claim 1 , and wherein each mask in the set of active masks is associated with a first attribute and a second attribute claim 1 , wherein the first attribute indicates an amount of shift of the mask with respect to the array of nozzles claim 1 , and wherein the second ...

FLUIDIC DIE WITH MASK REGISTER SETS

A fluidic die may include an array of fluid actuators, an actuation data register to store actuation data that indicates each fluid actuator to actuate for a set of actuation events, at least one storage device to store sets of mask data, each set of mask data indicating a set of fluid actuators of the array enabled for actuation for a respective actuation event of the set of actuation events, sequencing logic coupled to the at least one storage device to select one of the sets of mask data after each actuation event of the set of actuation events and actuation logic to electrically actuate a subset of the fluid actuators based at least in part on the actuation data register and the sequenced set of mask data for the respective actuation event. 1. A fluidic die comprising:an array of fluid actuators;an actuation data register to store actuation data that indicates each fluid actuator to actuate for a set of actuation events;at least one storage device to store sets of mask data, each set of e mask data indicating a set of fluid actuators of the array enabled for actuation for a respective actuation event of the set of actuation events;sequencing logic coupled to the at least one storage device to select one set of mask data of the set of mask data for each actuation event of the set of actuation events;actuation logic coupled to the actuation data register, the at least one storage device, and the respective fluid actuators, the actuation logic to electrically actuate a subset of the fluid actuators based at least in part on the actuation data register and the selected set of mask data for the respective actuation event.2. The fluidic die of claim 1 , further comprising:an array of nozzles, wherein each respective nozzle of the array comprises a respective fluid actuator of the array of fluid actuators as a respective fluid ejector, and each respective fluid ejector is to actuate to thereby eject a fluid drop via the respective nozzle of the array of nozzles.3. The ...

FLUID EJECTION MASK DATA SELECTION

A fluid ejection system may include an actuation controller that selects a first set of mask data for enabling fluid actuators with respect to a first region and a second set of mask data for enabling fluid actuators with respect to a second region. The first set of mask data may indicate a first number of fluid actuators of an array of fluid actuators enabled for actuation for a respective actuation event of a first set of actuation events. The second set of mask data may indicate a second number of fluid actuators of the array of fluid actuators enabled for actuation for a respective actuation event of a second set of actuation events. 1. A fluid ejection system comprising: select a first set of mask data for enabling fluid actuators with respect to a first region, the first set of mask data indicating a first number of fluid actuators of an array of fluid actuators enabled for actuation for a respective actuation event of a first set of actuation events; and', 'a select a second set of mask data for enabling fluid actuators with respect to a second region, the second set of mask, data indicating a second number of fluid actuators of the array of fluid actuators, different than the first number, enabled for actuation for a respective actuation event of a second set of actuation events., 'an actuation controller to2. The fluid ejection system of claim 1 , wherein the controller is to select the first set of mask data and to select the second set of mask data based upon a characteristic of fluid actuations with respect to the first region and a characteristic of fluid actuations with respect to the second region.3. The fluid ejection system of claim 2 , wherein the characteristic comprises a first fluid actuator actuation density of the first region and a second fluid actuator actuation density of the second region claim 2 , respectively claim 2 ,4. The fluid ejection system of claim 3 , wherein the controller is to determine the first fluid actuator actuation ...

PRINTING APPARATUS AND PRINTING METHOD

An object of the present invention is to efficiently perform a reading operation for printing position adjustment with high accuracy. A printing apparatus prints, on a print medium, adjustment patterns being for adjusting a printing position on the print medium and corresponding respectively to printing position adjustment items. In this printing, the printing apparatus prints the adjustment patterns while conveying the print medium in a forward direction with a conveying unit. Then, the conveying unit conveys the print medium in a backward direction until the adjustment patterns are moved beyond a reading position of a reading unit in the backward direction. Thereafter, the conveying unit conveys the print medium in the forward direction again to cause the adjustment patterns to reach the reading position. Thereafter, the reading unit reads the adjustment patterns continuously at the reading position while the conveying unit conveys the print medium in the forward direction. 1. A printing apparatus comprising:a conveying unit configured to convey a print medium in a forward direction being a direction in which the print medium is discharged and in a backward direction opposite to the forward direction while applying tension to the print medium;a printing unit configured to perform printing on the print medium conveyed by the conveying unit;a print controlling unit configured to control the printing unit to cause the printing unit to print a plurality of adjustment patterns on the print medium, the adjustment patterns being for use to adjust a printing position of the printing unit on the print medium and corresponding respectively to a plurality of printing position adjustment items; anda reading unit configured to read the adjustment patterns printed on the print medium at a reading position on a conveyance path of the conveying unit, whereinthe print controlling unit controls the printing unit to cause the printing unit to print the plurality of adjustment ...

FIRING MASKS

A printing apparatus is disclosed. The printing apparatus comprises a printhead and a controller. The printhead includes an array of nozzles, each having an actuator to eject a printing fluid, the array of nozzles having a first and a second subset of nozzles, wherein the first subset is located at the vicinity of an edge of the printhead. The controller is to assign a firing mask so that the actuators corresponding to the first subset of nozzles are instructed to eject the printing fluid with a higher energy level than the actuators corresponding to the second subset of nozzles. 1. A printing apparatus comprising:a printhead including an array of nozzles, each having an actuator to eject a printing fluid, the array of nozzles having a first and a second subset of nozzles, wherein the first subset is located at the vicinity of an edge of the printhead; anda controller to assign a firing mask so that the actuators corresponding to the first subset of nozzles are instructed to eject the printing fluid with a higher energy level than the actuators corresponding to the second subset of nozzles.2. The printing apparatus of claim 1 , wherein the controller is to:receive a print job to be printed;receive a print mode in which the print job is to be printed;wherein in a first print mode, the controller is to determine a first firing mask based on the print mode in which the first subset of nozzles is to eject the printing fluid at a higher energy level than the second subset of nozzles; andwherein in a second print mode, the controller is to determine a second firing mask based on the print mode in which the first subset of the array of nozzles is to eject the printing fluid at an equal or lower energy level than the second subset of nozzles.3. The printing apparatus of claim 2 , wherein the second firing mask is one from the group comprising a ramp mask and a square mask.4. The printing apparatus of claim 2 , wherein the first firing mask is an inverted ramp mask.5. The ...

Image forming method

An image forming method of the present invention is an image forming method of forming a halftone image on a corrugated fibreboard recording medium using an inkjet recording device that uses magenta ink and other inks with two or more colors other than the magenta ink, and is an efficient method that does not generate a mottle in an image printed in multicolor on a corrugated fibreboard recording medium using an inkjet recording device by determining a droplet ejection position of the magenta ink and then determining droplet ejection positions of the other inks with two or more colors to be positions different from the droplet ejection position of the magenta ink.

Dither pattern forming method and dither pattern

In order to print a unit area of a print medium by a first printing scan and a second printing scan, dither patterns are formed which can control the arrangement of dots on the print medium without adverse effects of density unevenness and graininess, that are caused by printing position displacement. Regarding first and second dither patterns, information indicating whether or not a threshold is already set to a reference pixel and one or more pixels around the reference pixel in the first dither pattern is obtained for cases where each pixel in the first dither pattern is the reference pixel. A pixel in the second dither pattern to which a predetermined pixel is to be set is determined based on the obtained information. The first and second dither patterns formed in the above manner are associated with the first printing scan and the second printing scan, respectively.

Printer with ink control

A printer is disclosed. The printer determines the width of media to be printed on. When the width of the media is below a threshold the printer prints using multiple printing passes where the amount of ink is divided between the multiple printing passes with a first distribution. When the width of the media is not below the threshold the printer prints using multiple printing passes where the amount of ink is divided between the multiple printing passes with a second, different distribution.

Printing apparatus and print producing method

A printing apparatus includes a first head and a second head provided in different positions in a sub-scanning direction. The printing apparatus performs, using the second head without using the first head, formation of an image in a third region present on a lower end side from a second region. A rate of use of the first head to the second head has a tendency of decreasing from an upper end side toward the lower end side in the sub-scanning direction in the second region.

PRINTING APPARATUS AND PRINTING METHOD

A printing apparatus applies liquids so that a reaction liquid and a clear emulsion liquid are mainly applied in a first scanning stage; a coloring material liquid is mainly applied in an intermediate scanning stage; and the clear emulsion liquid is mainly applied in a last scanning stage 1. A printing apparatus comprising:an applying unit capable of applying a first liquid, a second liquid, and a third liquid onto a printing medium, the first liquid containing a coloring material, the second liquid containing a polymer emulsion but no coloring material, the third liquid containing a reactive component reactive with the first liquid but containing no coloring material; anda controlling unit capable of controlling the applying unit, a first applying operation of applying the second liquid and the third liquid each in a larger amount than the first liquid;', 'a second applying operation of applying the first liquid in a larger amount than each of the second liquid and the third liquid; and', 'a third applying operation of applying the second liquid in a larger amount than each of the first liquid and the third liquid., 'wherein the applying unit applies the liquids to a predetermined region of the printing medium by applying operations performed in the following order2. The printing apparatus according to claim 1 , wherein the applying unit performs:the first applying operation without applying the first liquid;the second applying operation without applying the second liquid nor the third liquid, andthe third applying operation without applying the first liquid nor the third liquid.3. The printing apparatus according to claim 1 , further comprising a scanning device claim 1 ,wherein the applying unit includes a printing head from which the first, the second, and the third liquid are applied, and the scanning device causes the printing head to scan the predetermined region a plurality of times.4. The printing apparatus according to claim 3 , wherein the applying unit ...

Controller, printer, and computer-readable storage medium

A controller includes a print controller configured to cause the print execution engine to convey the print medium in a conveying direction and execute a plurality of partial printings. The print controller causes the print execution engine to execute first and second partial printings. On a print medium, first and second target ranges on which printing is to be performed by the first and second partial printings, respectively, form an overlapping range. The first and second target ranges include first and second non-overlapping ranges, respectively, that do not overlap the second and first target ranges, respectively. The print controller generates print data based on non-overlapping range data and overlapping range data. The generating the print data includes increasing a density of at least a portion of the image to be printed in the overlapping range as compared with a density of the images to be printed in the non-overlapping ranges.

FLUIDIC DIE

A fluidic die may include an array of fluid actuators, an actuation data register to store actuation data that indicates each fluid actuator to actuate for a set of actuation events, a mask register to store mask data that indicates a set of fluid actuators of the array enabled for actuation for a respective actuation event of the set of actuation events, a pattern select register to store a pattern selection, input mask data generation circuitry to build a set of mask data with subsets of mask data, each of the subsets having a pattern based upon a pattern selection input, and to populate the mask register with the set of mask data, and actuation logic to electrically actuate a subset of the fluid actuators based at least in part on the actuation data register and the mask register for the respective actuation event. 1. A fluidic die comprising:an array of fluid actuators;an actuation data register to store actuation data that indicates each fluid actuator to actuate for a set of actuation events;a mask register to store mask data that indicates a set of fluid actuators of the array enabled for actuation for a respective actuation event of the set of actuation events;mask data generation circuitry to build a set of mask data from subsets of mask data, each of the subsets having a pattern based upon a pattern selection input, and to populate the mask register with the set of mask data; andactuation logic coupled to the actuation data register, the mask register, and the respective fluid actuators, the actuation logic to electrically actuate a subset of the fluid actuators based at least in part on the actuation data register and the mask register for the respective actuation event.2. The fluidic die of claim 1 , wherein the mask data generation circuitry comprises:a shift register;a pattern select register to store the pattern selection input; anda shift pattern state machine to load the shift register with a selected pattern of mask data based on the stored pattern ...

PAGE-WIDE ARRAY PRINTING

A method in a page-wide array printing apparatus comprising at least first and second printing dies that overlap in a page width direction comprises the steps of calibrating the printing apparatus in a media advance direction to a higher resolution than the page width direction, the media advance direction being perpendicular to the page width direction, and using printing masks to control the operation of a plurality of nozzles in an overlap area between the first and second printing dies to reduce any visible defects caused by dot placement errors in the page width direction. 1. A method in a printing apparatus comprising a first and second printing dies that overlap in a page width direction , the method comprising:calibrating the printing apparatus in a media advance direction to a higher resolution than the page width direction, the media advance direction being perpendicular to the page width direction; andusing printing masks to control the operation of a plurality of nozzles in an overlap area between the first and second printing dies to reduce any visible defects caused by dot placement errors in the page width direction.2. The method as claimed in claim 1 , wherein the printing masks comprise split weaving masks.3. The method as claimed in claim 1 , wherein the printing masks comprise random split weaving masks.4. The method as claimed in claim 3 , wherein the random split weaving masks control operation of first and second nozzles of a plurality of nozzle pairs in the overlap area in a random manner.5. The method as claimed in claim 3 , wherein the random split weaving masks control operation of a group of nozzles in the overlap area in a random manner claim 3 , wherein the group of nozzles comprise a plurality of redundant nozzles.6. The A method as claimed in further comprising:controlling the firing of a plurality of nozzles of the first printing die using a first printing mask;controlling the firing of a plurality of nozzles of the second printing ...

Dither mask generation method and device

The dither mask generation method includes: a nozzle ejection rate determination process of determining a nozzle ejection rate of each nozzle in a recording head; a corresponding nozzle specifying process of specifying the nozzle corresponding to individual pixels of a dither mask by making at least one nozzle in charge of recording at each pixel position correspond to the individual pixels of the dither mask; a nozzle ejection rate reflecting processing process of performing processing of reflecting the nozzle ejection rate on an evaluation index when individual thresholds of the dither mask are set; and a threshold setting process of setting the thresholds to the individual pixels of the dither mask on the basis of the evaluation index.

PRINTING APPARATUS, PRINTING METHOD, AND STORAGE MEDIUM

Ink containing metal particles is ejected from a print head, in accordance with a plurality of print ratios corresponding to a plurality of scans of the print head relative to a unit region of a print medium. At least one of the plurality of print ratios is set as a high print ratio which is higher than others. A height of the high print ratio, in a case where a scan corresponding to the high print ratio is a Lth (L: integral number) scan in the plurality of print scans, is higher than a height of the high print ratio, in a case where a scan corresponding to the high print ratio is a Nth (N>L; N: integral number) scan in the plurality of print scans. 1. A printing apparatus comprising:a print head configured to eject ink containing metal particles;a scan unit configured to scan the print head in a first direction;a conveyance unit configured to convey a print medium in a second direction intersecting with the first direction; anda control unit configured to control a print operation which causes the ink to be ejected from the print head, while causing the scan unit to scan the print head for a plurality of times relative to a unit region of the print medium, in accordance with a plurality of print ratios corresponding to the plurality of times of the scan, and a conveyance operation which conveys the print medium by the conveyance unit, whereinthe control unit is configured to set at least one of the plurality of print ratios as a high print ratio which is higher than others, anda height of the high print ratio, in a case where a scan corresponding to the high print ratio is a Lth (L: integral number) scan in the plurality of print scans, is higher thana height of the high print ratio, in a case where a scan corresponding to the high print ratio is a Nth (N>L; N: integral number) scan in the plurality of print scans.2. The printing apparatus according to claim 1 , whereina number of the plurality of print ratios set as the high print ratio is one.3. The printing ...

Liquid discharge apparatus, discharge adjustment method, and discharge adjustment program

A liquid discharge apparatus includes a head array including heads each having nozzles to discharge liquid onto a recording medium, arranged as a nozzle line in a sub-scanning direction; a moving part to move the head array alternately in the scanning direction and in the sub-scanning direction perpendicular to each other while discharging or not discharging the liquid; and a controller including a memory and a processor. The processor adjusts image data for juncture areas of two heads adjacent to each other in the sub-scanning direction; and drives the head array to discharge the liquid from the nozzles while the moving part moves the head array. The adjusting adjusts the image data such that the image data is thinned to make print rates for the juncture areas smaller at ends of the nozzle lines, and the print rates vary among the juncture areas.

Image processing apparatus and image processing method

There is provided an image processing method that can output a high-quality image having high dispersing quality in the configuration for printing an image using a plurality of different kinds of dots. Therefore in the same region of a printing medium, binary data is generated such that a low frequency component of space frequency characteristics is suppressed with priority to a dot pattern of a combination in which a plurality of kinds of dots are relatively noticeable.

PRINTING APPARATUS AND PRINTING METHOD

The present disclosure prevents a visible pattern corresponding to the pattern of a mask from being noticeable and enables more appropriate printing. A printing apparatus performing printing by an inkjet scheme includes: an inkjet head ; and a controller , configured to control the operation of a main scan driver and a sub scan driver to perform a main scanning operation multiple times on each position on a medium . In the main scanning operation, for at least part of ejection positions serving as ejection targets of ink droplets in the main scanning operation, the controller causes the inkjet head to eject an ink droplet in accordance with a mask for selecting part of the at least part of ejection positions. In the main scanning operation at one time, the controller causes the inkjet head to eject an ink droplet in accordance with a preset first mask. In the main scanning operation at another time different from the one time, the controller causes the inkjet head to eject an ink droplet in accordance with a second mask for selecting an ejection position in a pattern different from the first mask. 1. A printing apparatus configured to perform printing on a medium by an inkjet scheme , comprising:an inkjet head, configured to eject an ink droplet by the inkjet scheme;a main scan driver, configured to cause the inkjet head to perform a main scanning operation of ejecting the ink droplet while moving relative to the medium in a preset main scanning direction;a sub scan driver, configured to cause the inkjet head to perform a sub scanning operation of moving relative to the medium in a sub scanning direction orthogonal to the main scanning direction; anda controller, configured to control operation of the main scan driver and the sub scan driver to perform the main scanning operation a plurality of times on each ejection region on the medium, whereinthe inject head has a nozzle row in which a plurality of nozzles are arranged in the sub-scanning direction,in one sub ...

Image processing apparatus, computer-readable recording medium, and image processing method

An image processing apparatus that outputs print data to a recording apparatus including a recording unit that causes each of a plurality of nozzles to eject droplets to record dots on a recording medium, the image processing apparatus comprises: an acquiring module that acquires image data for an image to be formed by the recording unit; a determining module that determines whether or not the image data is laminated image data formed of a plurality of layers; and a generating module that generates, when the image data is the laminated image data, the print data that assigns nozzles for recording dots corresponding to respective pixels of the laminated image data such that a specific nozzle for recording dots that correspond to pixels at an identical pixel position in the laminated image data varies from one layer to another.

Systems and methods to activate print elements of print heads in an ink printing apparatus

In a method for printing, print images can be stored in the printer controller as bitmaps made up of bitmap data arranged in rows and columns. A printing element of a print head may be associated with a respective column of the bitmap. The same bitmap data of the bitmap may be associated with the printing elements of the print heads that are situated in an overlap region. The printing elements in the overlap region can be activated such that a print dot associated with a bitmap datum may be printed both by a printing element of the one print head and by a printing element of the other print head.

METHOD OF STITCHING OVERLAPPING PRINTHEAD SEGMENTS

A method of printing an image using a printing system having first and second overlapping printhead segments. The method includes the steps of: (i) identifying a strip of the image to be printed in an overlap region of the first and second printhead segments; (ii) determining a stitching technique for the first and second printhead segments; and (iii) printing the image using the first and second printhead segments, the printing including stitching the first and second printhead segments in the overlap region using the determined stitching technique. The stitching technique may be a butt stitch or a feathered stitch, dependent on image content in the strip. 1. A method of printing an image using a printing system comprising at least first and second overlapping printhead segments , the method comprising the steps of:(i) identifying a strip of the image to be printed in an overlap region of the first and second printhead segments; (a) printing using only nozzles from the first printhead segment at one side of a seam and printing using only nozzles from the second printhead segment at the other side of the seam; and', '(b) printing using nozzles from both the first and second printhead segments at either side of the seam, and, '(ii) determining a stitching technique for the first and second printhead segments, the stitching technique being selected from the group consisting of(iii) printing the image using the first and second printhead segments, the printing comprising stitching the first and second printhead segments in the overlap region using the determined stitching technique, wherein the stitching technique is dependent on image content in the strip.2. The method of claim 1 , wherein the image content contains one or more of: text and line work claim 1 , and wherein the stitching technique (a) is used for printing in the overlap region.3. The method of claim 2 , wherein the seam is a continuous seam passing through at least some of regions of relatively lower ...

Image processing apparatus and image processing method

When ink is discharged more than once to one pixel area, the ink is discharged without focusing on specific scans among a plurality of scans if the attribute in an image is a first attribute, and the ink is discharged intensively in specific scans among the plurality of scans if the attribute in the image is a second attribute.

FLUID ACTUATOR REGISTERS

Examples include a fluidic die. The fluidic die may comprise an array of fluid actuators, an actuation data register, a mask register, and actuation logic. The actuation data register may store actuation data that indicates fluid ejectors to actuate for a set of actuation events. The mask register may store mask data that indicates a set of fluid actuators enabled for actuation for a respective actuation event of the set of actuation events. The actuation logic may electrically actuate a subset of the fluid actuators based at least in part on the actuation data register and the mask register for the respective actuation event. 1. A fluidic die comprising:an array of fluid actuators;an actuation data register to store actuation data that indicates each fluid actuator to actuate for a set of actuation events;a mask register to store mask data that indicates a set of fluid actuators of the array enabled for actuation for a respective actuation event of the set of actuation events; andactuation logic coupled to the actuation data register, the mask register, and the respective fluid actuators, the actuation logic to electrically actuate a subset of the fluid actuators based, at least in part on the actuation data register and the mask register for the respective actuation event.2. The fluidic die of claim 1 , further comprising:an array of nozzles, wherein each respective nozzle of the array comprises a respective fluid actuator of the array of fluid actuators as a respective fluid ejector, and each respective fluid ejector is to actuate to thereby eject a fluid drop via the respective nozzle of the array of nozzles.3. The fluidic die of claim 1 , further comprising:an array of microfluidic channels, wherein each respective microfluidic channel of the array comprises a respective fluid actuator of the array of fluid actuators disposed therein as a respective fluid pump, and each respective fluid pump is to actuate to thereby generate fluid displacement in the respective ...

Dot Recording Apparatus, Dot Recording Method, Computer Program Therefor, and Method of Manufacturing Recording Medium

A dot recording apparatus performs multi-pass recording through which recording of dots is terminated in main scanning passes of N times (N is an integer equal to or greater than two) on a main scanning line, the multi-pass recording is performed for respective supercell regions defined as a region including pixel positions on which recording of dots is performed in each main pass, a first supercell region recorded in a first pass in the supercell regions is configured with a first concave polygon having a concave portion and a convex portion, a second supercell region recorded in a second pass in the supercell regions is configured with a second concave polygon having a concave portion and a convex portion, and shapes of the first concave polygon and the second concave polygon are inversely symmetrical shapes in the main scanning direction.

Image processing apparatus, image processing method, and storage medium

First quantization data for printing by the first nozzle group and second quantization data for printing by the second nozzle group are generated based on multi-valued data. By use of mask patterns, first print data and second print data are generated based on the first quantization data and the second quantization data. The first mask pattern for generating first print data and the second mask pattern for generating second print data are formed so as to include a pixel in which printing of a dot is allowed in both and a pixel in which printing of a dot is not allowed in both. The pixel value of each pixel indicated by the multi-valued data has a correlation with the sum of the number of dots indicated by the first print data and the number of dots indicated by the second print data in the area corresponding to each pixel.

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

Replacement processing is executed when the number of times of permission for a pixel corresponding to an ejection defective nozzle in a mask pattern is larger than a smallest number of times of permission, of the numbers of times of permission for pixels corresponding to ejection normal nozzles. 1. An image processing apparatus that generates print data using a printing head having an ejection port array in which a plurality of ejection ports for ejecting inks is arrayed in a predetermined direction , the print data using the printing head in each of K (K≧3) times of relative scanning to a unit area on a printing medium in a crossing direction intersecting with the predetermined direction , and the print data determining ejection or non-ejection of ink to each of pixel-equivalent pixel regions in the unit area , the image processing apparatus comprising:a first acquiring unit configured to acquire image data in which information indicating the number of times of ejection of ink from zero to N (2≦N≦K) times for each of the plurality of pixel regions is determined for each pixel;a storage unit configured to store a first mask pattern in which information indicating the number of times of permission of ejection of ink from 0 to M (2≦M≦K) times for each of the plurality of pixel regions is determined for each pixel;a specifying unit configured to specify the first ejection port in which ejection failure of ink exists, of the plurality of ejection ports;a first selecting unit configured to select the information indicating the number of times of permission in the K pixels, of the information determined by the first mask pattern stored in the storage unit, the K pixels corresponding to K different ejection ports including at least the first ejection port specified by the specifying unit and capable of ejecting the inks to a same position to each other in the K times of scanning, and the K pixels being positioned in a same position to each other in the crossing direction; ...

Image recording apparatus

There is provided an image recording apparatus, including: a conveyer; a carriage; a recording head having at least three nozzle rows; and a controller. When a moving direction of the carriage in one of two continuous recording passes is different from that in the other of the two continuous recording passes, the image recording apparatus conveys a recording medium in the conveyance direction so that two recording areas partially overlap with each other. When a line image, which belongs to an overlap area, is recorded, the image recording apparatus executes recording so that the two continuos recording passes complement each other, and forms at least part of dots in the line image in accordance with a landing order different from a landing order used when the image is recorded in a non-overlap area included in the recording areas and different from the overlap area.

Method and flat bed printer for printing print jobs on media pieces on the flat bed of the flat bed printer

A method for printing a plurality of print jobs on a flat bed printer includes automatically grouping the print jobs into a plurality of consecutive container jobs, and for each container job automatically creating a digital plan of the flat bed, automatically defining a mask with cutting information according to the created plan, receiving the defined mask on the flat bed, receiving the media pieces on the flat bed positioned in according with the received mask, and unattended printing of the print jobs on the media pieces by the flat bed printer making use of the received mask. The automatic grouping includes gathering the group of print jobs due to the print job characteristics of each of the print jobs and/or the flat bed characteristics of the flat bed and ordering the consecutive container jobs due to the print job characteristics of each of the print jobs and/or the flat bed characteristics of the flat bed.

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

Replacement processing is executed when the number of times of permission for a pixel corresponding to an ejection defective nozzle in a mask pattern is larger than a smallest number of times of permission, of the numbers of times of permission for pixels corresponding to ejection normal nozzles. 1. An image processing apparatus that generates print data used for K (K≧3) times of relative scanning to a unit area on a printing medium , the relative scanning being performed by a printing head that ejects ink , the image processing apparatus comprising:an acquiring unit configured to acquire image data, information indicating a number of times of ejection of ink from zero to N (2≦N≦K) times for each of a plurality of pixel regions in the printing medium being determined for each of a plurality of pixels in the image data; anda generation unit configured to generate the print data corresponding to the K times of scanning based on the image data and K mask patterns, information indicating a number of times of permission for ejection of ink from zero to N times for each of the plurality of pixel regions being determined for each of the plurality of pixels in the K mask patterns,wherein, among K pixels in the K mask patterns each corresponding to a same pixel region, (i) for N pixels, information indicating different numbers of times of permission is determined, the different numbers being varied from one to N, and (ii) for K−N pixels, information indicating that the number of times of permission is zero is determined.2. The image processing apparatus according to claim 1 , wherein the generation unit generates the printing data by using a table in which ejection or non-ejection of ink for each of the plurality of pixel regions is defined in accordance with the information determined in the image data and the information determined in the mask pattern.3. The image processing apparatus according to claim 2 , wherein the table defines (i) ejection of ink in a case where the ...

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

With respect to an area quantized by using an area of part in a quantization pattern and also without using an area of the other part in the quantization pattern in quantized data, a mask pattern part corresponding to the area of the part among mask pattern parts constituted by dividing a mask pattern is applied. 1. An image processing apparatus for generating recording data used for each of a plurality of relative scanning operations of a recording head in an intersecting direction that intersects with a predetermined direction with respect to a unit area on a recording medium , the recording head including an ejection opening column having a plurality of ejection openings for ejecting ink arranged in the predetermined direction , the recording data specifying ejection or non-ejection of the ink to each of a plurality of pixel areas equivalent to a plurality of pixels in the unit area , the image processing apparatus comprising:an obtaining unit configured to obtain multi-value data corresponding to an image recoded in the unit area;a quantization unit configured to generate quantized data by repeatedly applying a quantization pattern to the multi-value data obtained by the obtaining unit in the predetermined direction; anda distribution unit configured to generate the recording data by distributing the quantized data generated by the quantization unit to the plurality of scanning operations by using a plurality of mask patterns corresponding to the plurality of scanning operations, each of the plurality of mask patterns being mutually associated with the quantization pattern,wherein the distribution unit applies, to an area quantized by using an area of part in the quantization pattern and also without using an area of the other part in the quantization pattern in the quantized data generated by the quantization unit, each of a plurality of mask pattern parts obtained by dividing each of the plurality of mask patterns in the predetermined direction corresponding ...

PRINTING APPARATUS AND IMAGE CORRECTION METHOD

A printing apparatus includes a printer with printing elements that print dots and a controller that acquires input image data. The controller acquires a pre-correction printing density that is based on test pattern data, which includes a uniform array of pixels, and printing characteristics of printing positions of the dots printed by the plurality of printing elements. The controller calculates a target density by averaging the pre-correction printing density and offsets the target density so that the target density is equal to or greater than the pre-correction printing density. The controller calculates a correction gain of the plurality of printing elements on the basis of the ratio of the target density to the pre-correction printing density and controls the printer on the basis of the correction gain and the input image data.

COMPENSATING SWATH HEIGHT ERROR

Example implementations relate to swath height error compensation. Some examples may determine a density of an image to be printed in an overlap area of a printing material. The overlap area may include target pixels capable of being printed by a first set of drop ejection elements and a second set of drop ejection elements that are redundant to the first set of drop ejection elements. Some implementations may also determine a mask to apply to the first and second set of drop ejection elements based on the determined density, and the mask may designate at least one additional drop to apply to at least one target pixel in the overlap area by at least one of the first and second set of drop ejection elements. Some implementations may also apply the mask to the first set of drop ejection elements and the second set of drop ejection elements. 1. A computer-implemented method for correcting swath height error , comprising: indicates a degree of movement of the printing fluid during printing; and', 'is dependent upon the amount of printing fluid deposited in the overlap area;, 'determining a swath height error for an overlap area of an image to be printed by at least two printhead die by determining an amount of printing fluid to be deposited in the overlap area, wherein the swath height errordetermining a mask, based on the amount of printing fluid to be deposited in the overlap area, to apply to the at least two printhead die, which mask compensates for the swath height error; andcontrolling operation of the at least two printhead die based on the mask.2. The computer-implemented method of claim 1 , wherein a greater amount of printing fluid to be deposited in the overlap area indicates a greater swath height error.3. The computer-implemented method of claim 1 , wherein:the mask indicates additional drops to apply to target pixels in the overlap area to compensate for the swath height error; andthe mask is applied on a per-pixel basis.4. The computer-implemented method ...

PRINTING APPARATUS AND PRINTING METHOD

In a printing chip overlapping area being an area in which a first printing chip and a second printing chip overlap with each other when viewed from a second direction, ink is discharged so that a first overlapping area and a second overlapping area at least partially do not overlap with each other when viewed from the second direction. In the first overlapping area, a nozzle usage ratio of a first nozzle row and a nozzle usage ratio of a third nozzle row are neither 0% nor 100%. In the second overlapping area, a nozzle usage ratio of a second nozzle row and a nozzle usage ratio of a fourth nozzle row are neither 0% nor 100%. 1. A printing apparatus for performing printing on a medium , the printing apparatus comprising:a printing head including a first nozzle row, a second nozzle row, a third nozzle row, a fourth nozzle row, a fifth nozzle row, and a sixth nozzle row, which are arranged to at least partially overlap with each other when viewed from a second direction intersecting a first direction, the first nozzle row, the second nozzle row, the third nozzle row, the fourth nozzle row, the fifth nozzle row, and the sixth nozzle row including a plurality of nozzles arrayed in the first direction for discharging ink onto the medium;a conveyance unit configured to convey the medium relatively to the printing head; anda printing control unit configured to cause the printing head to discharge the ink onto the medium, whereinthe first nozzle row and the second nozzle row are configured to discharge a first color ink,the second third nozzle row and the fourth nozzle row are configured to discharge a second color ink,the fifth nozzle row and the sixth nozzle row are configured to discharge a third color ink, and [ the first overlapping area where both the first nozzle row and the second nozzle row discharge the ink when viewed from the second direction, and', 'the second overlapping area where both the third nozzle row and the fourth nozzle row discharge the ink when ...

Probabilistic pixel biasing in low area coverage

Methods, apparatuses, devices, and systems are disclosed herein for upscaling an input image to a higher resolution while simultaneously converting the image data from a multi-drop state to a binary state. These systems and methods use a probabilistic combination of randomized and biased positioning of inkjet firings in order to yield perceptibly lower graininess in low-coverage areas of output prints without introducing new artefacts.

PRINTING APPARATUS AND PRINTING METHOD

A printing apparatus performing printing by an inkjet scheme includes: an inkjet head; and a controller, configured to control the operation of a main scan driver and a sub scan driver to perform a main scanning operation multiple times on each position on a medium. In the main scanning operation, for at least part of ejection positions serving as ejection targets of ink droplets in the main scanning operation, the controller causes the inkjet head to eject an ink droplet in accordance with a mask for selecting part of the at least part of ejection positions. 1. A printing apparatus configured to perform printing on a medium by an inkjet scheme , comprising:an inkjet head, configured to eject an ink droplet by the inkjet scheme;a main scan driver, configured to cause the inkjet head to perform a main scanning operation of ejecting an ink droplet while moving relative to the medium in a preset main scanning direction;a sub scan driver, configured to cause the inkjet head to perform a sub scanning operation of moving relative to the medium in a sub scanning direction orthogonal to the main scanning direction; anda controller, configured to control operation of the main scan driver and the sub scan driver to perform the main scanning operation multiple times on each position on the medium, whereinin the main scanning operation, for at least part of ejection positions serving as ejection targets of ink droplets in the main scanning operation, the controller causes the inkjet head to eject an ink droplet, in accordance with a mask configured to select part of the at least part of ejection positions, to an ejection position specified by the mask,in the main scanning operation at one time, the controller causes the inkjet head to eject an ink droplet in accordance with a preset first mask, andin the main scanning operation at another time different from the one time, the controller causes the inkjet head to eject an ink droplet in accordance with a second mask configured ...

METHOD OF PRINTING AND PRINTER

A method of controlling a printer is described, for printing a pattern from a first row of fluid ejection nozzles and a second row of fluid ejection nozzles in a multi-pass printing mode. The first and second rows of fluid ejection nozzles eject fluid of a first type and fluid of a second type, respectively. The method comprises: assigning respective parts of the pattern to be printed to the first and second rows of fluid ejection nozzles; applying a first mask to the first row of said ejection nozzles and a second mask to the second row of fluid ejection nozzles for printing with selected nozzles of each of the rows of fluid ejection nozzles during each pass; wherein the first mask comprises a mesa portion and the second mask comprises a mesa portion wherein the mesa portion of the first mask includes at least a first peak and the mesa portion of the second mask includes at least a second valley, the first peak overlapping with the second valley. 1. A method of controlling a primer to print a pattern from a first row of fluid ejection nozzles and a second row of fluid ejection nozzles in a multi-pass printing mode , the first and second rows of fluid election nozzles ejecting fluid of a first type and fluid of a second type , respectively , the method comprising:assigning respective parts of the pattern to be printed to the first and second rows of fluid ejection nozzles;applying a first mask to the first row of fluid ejection nozzles and a second mask to the second row of fluid ejection nozzles for printing with selected nozzles of each of the rows of fluid ejection nozzles during each pass;wherein the first mask comprises a mesa portion and the second mask comprises a mesa portion wherein the mesa portion of the first mask includes at least a first peak and the mesa portion of the second mask includes at least a second valley, the first peak overlapping with the second valley.2. The method of wherein the first and second masks further comprise first and second ...

POINT RECORDING METHOD AND POINT RECORDING DEVICE

Method for reducing jet module stitch error

A test pattern is printed using the nozzles of adjacent jetting modules, and the pattern is analyzed to detect a stitch error in the overlap regions. The results of this analysis is used to calculate a set of correction values to be applied to print data subsequently sent to nozzles of the adjacent jetting modules to make a correction for the stitch error. During a subsequent production run, the print data sent to the nozzles of the adjacent jetting modules is analyzed to sense an image content attribute. These results of the analysis of the print data is then used to calculate a dynamic adjustment that is used to adjust the set of correction values calculated during the set up procedure. The line head is then used to print the corrected print data by applying the set of adjusted correction values to production print data subsequently sent to the jetting modules.

Ink-jet printing apparatus and method, and computer readable memory

Ink ejection/non-ejection from a plurality of ink ejection print elements is controlled by looking up a first table that indicates the correspondence between a plurality of inks and gray scale values of print pixels, and a second table indicating combinations of density distribution patterns of print pixels and ink ejection print elements in correspondence with gray scale values, in accordance with a pixel density pattern and its gray scale value.

Means for Higher Speed Inkjet Printing

A method and apparatus for subdividing and printing regions of a substrate with multiple print heads or multiple print head assemblies which substantially decreases printing time is described. The method includes a feathering method which reduces overlap artifacts which is useful in any printing situation where adjacent regions are printed that could be misaligned, offset, or have slightly different colors.

Printing process using a plurality of drive signal types

A maskable drive signal generator selectively generates one of n types of maskable drive signals for each main scan pass, and a drive signal masking section generates a drive signal to be supplied to ink-expulsion drive elements of a print head by masking the maskable drive signal according to a print signal. The printing of ink dots on each raster line is completed in n×m main scan passes while employing each of the n types of maskable drive signals m times on each raster line.

Hybrid printmask for multidrop inkjet printer

A swath printer and multipass printing method for improving print quality. The printer minimizes dot placement errors on a printed medium due to depositing drops of ink from lower quality printhead nozzles by providing a printmask having a mask pattern which prints with those nozzles most susceptible to dot placement error using a hi-fipe printmode which deposits into a specific pixel location a small number of drops in each of multiple passes, and a multidrop printmode which deposits into a specific pixel location many drops rapidly in one of the passes. Because such a printer and method prints substantially equally with all printhead nozzles, it does not shorten the useful life of the printhead due to defects associated with the number of times a nozzle deposits ink.

Multipass inkjet printing using print masking

A method of multipass inkjet printing of images in response to digital images having code values includes providing an inkjet printer capable of printing at least two ink drops at each printing location during different passes, including a printhead which can select at least two different ink drop sizes, and selecting a number of passes for producing an image and providing a print mask having mask values which, in each pass, sequentially corresponds to predetermined pixels and, in response to the mask values and the code values of such pixels, operates the inkjet printer to select the ink drop size for each pixel in each pass so that the inkjet printer produces an image.

Ink jet recording method

After an ink-jet recording head (1) with a plurality of discharging portions (Nos. 1-128) arranged is main-scanned in a direction perpendicular to the direction of the discharging portion arrangement to record a first image area, sub-scanning of the head is performed. Before the head is main-scanned to record a second image area, the sub-scanning is performed so that a few discharging portions (Nos. 1-3) on an upper edge portion of the head (1) in second main-scanning overlap part of the first image area. Ink droplets land on pixels in the overlapping portion twice for each main-scanning, and image density of the pixels in the overlapping portion is controlled by the sum number of the landing ink droplets. This enables image density unevenness of image density, a "black stripe banding" or a "white stripe banding" in a boundary of an image area being recorded in each main-scanning to be markedly reduced.

Bidirectional ink jet printing

Ink jet print quality is improved and higher pen speed permitted by a bidirectional printing protocol. According to the new protocol, each individual character to be printed is first partitioned into a leading portion and a trailing portion. The trailing portion includes all trailing edge bits. Only the leading portion is printed on a forward pass of the ink jet pen. The trailing portion is printed on a reverse pass of the pen, so that trailing edge ink drops are instead printed as leading edge ink drops. As a result, satellite ink drops are directed toward the center of the character, where they are covered by primary ink drops, thereby minimizing character edge roughness associated with exposed satellite ink drops.

Dot scheduling for liquid ink printers

A method and apparatus of printing with a liquid ink printhead ejecting ink in swaths on a recording medium to form an image including a plurality of dots deposited at pixel locations of a scanline. The printer deposits a plurality of dots at adjacent pixel locations on the scan line during non-consecutive swaths of the printhead to form the image. Dot interaction between dots is minimized so that no two dots are deposited adjacent to each other in consecutive depositions of the dots of consecutive swaths of the printhead. Reduction of ink bleeding, printhead signatures such as banding, and other defects caused by clogged nozzles of the printhead are reduced.

Means for higher speed inkjet printing

A method and apparatus for subdividing and printing regions of a substrate with multiple print heads or multiple print head assemblies which substantially decreases printing time is described. The method includes a feathering method which reduces overlap artifacts which is useful in any printing situation where adjacent regions are printed that could be misaligned, offset, or have slightly different colors.

Means for higher speed inkjet printing

A method and apparatus for subdividing and printing regions of a substrate with multiple print heads or multiple print head assemblies which substantially decreases printing time is described. The method includes a feathering method which reduces overlap artifacts which is useful in any printing situation where adjacent regions are printed that could be misaligned, offset, or have slightly different colors.

Printer head

Printing system that utilizes print masks with resolutions that are non-integral multiples of each other

Staggered pens in color thermal ink-jet printer

A color ink jet printer including a print carriage movable along a carriage scan axis and a plurality of color producing ink jet printheads supported by the print carriage and offset relative to each other so that their nozzle arrays are non-overlapping along the media scan axis, such that the nozzle arrays of the ink jet printheads traverse non-overlapping regions as the carriage is scanned along the carriage scan axis.

Control of density unevenness in printing

POINT RECORDING METHOD AND POINT RECORDING DEVICE

Dot recording method and dot recording apparatus, and recording medium recording program for the same

Procede d'enregistrement de points et dispositif d'enregistrement associe

Dot recording method and dot recording device

A specific image is first recorded according to a plurality of dot recording schemes which have an identical resolution and which are different at least in sub-scan feed operations. Then a desired dot recording scheme is selected corresponding to a desired recorded image which has been selected out of a plurality of recorded images recorded according to the plurality of dot recording schemes, and scheme selection information for specifying the desired dot recording scheme is stored into a rewritable non-volatile memory. In actual image recording, the scheme selection information stored in the non-volatile memory is read out, and a desired image is recorded on a recording medium according to the desired dot recording scheme specified by the scheme selection information.

Dot recording method and dot recording device

First, the same image is recorded in each of a plurality of dot recording modes differing from each other at least in vertical scanning, with the same resolution. Then, a dot recording mode in which a preferred recorded image among the recorded images is selected, and mode designation information for designating the preferred dot recording mode is stored in a writable non-volatile memory. In actually recording the image, the mode designation information stored in the non-volatile memory is read, and the desired image is recorded onto a recording medium in the dot recording mode designated by the mode designation information.

Printing apparatus

There is provided a plurality of dot printing modes each defining printing operations during main- and sub-scanning. A preferable dot printing mode is selected according to mode selection information that is predetermined to specify the preferable printing mode, and printing is executed according to the preferable dot printing mode specified by the mode selection information. The plurality of dot printing modes are divided into a plurality of printing mode groups according to combination of print resolution and printing speed. The mode selection information specifies the preferable dot printing mode for each printing mode group. One of the plurality of printing mode groups is selected in initial settings of the printing apparatus.

Printing performed by selecting a recording mode based on nozzle misalignment and sub-scan feed misalignment

Dot recording method and dot recording apparatus

A specific image is first recorded according to a plurality of dot recording schemes which have an identical resolution and which are different at least in sub-scan feed operations. Then a desired dot recording scheme is selected corresponding to a desired recorded image which has been selected out of a plurality of recorded images recorded according to the plurality of dot recording schemes, and scheme selection information for specifying the desired dot recording scheme is stored into a rewritable non-volatile memory. In actual image recording, the scheme selection information stored in the non-volatile memory is read out, and a desired image is recorded on a recording medium according to the desired dot recording scheme specified by the scheme selection information.

ドット記録方法およびドット記録装置、並びに、そのためのプログラムを記録した記録媒体

(57)【要約】 【課題】 個々のドット記録装置に適した好ましいドッ ト記録方式を採用する。 【解決手段】 まず、同一の解像度でドットを記録する ためのドット記録方式として、少なくとも副走査送り動 作が異なる複数のドット記録方式を用いて同一の画像を それぞれ記録する。そして、複数のドット記録方式で記 録された複数の記録画像のうちの好ましい記録画像に対 応するドット記録方式を選択し、好ましいドット記録方 式を指定するための方式指定情報を、書き換え可能な不 揮発性メモリに記憶する。実際に画像を記録する際に は、不揮発性メモリに記憶された方式指定情報を読み出 すとともに、方式指定情報によって指定されたドット記 録方式に従って、所望の画像を記録媒体上に記録する。

Dot recording method and dot recording device

First, the same image is recorded in each of a plurality of dot recording modes differing from each other at least in vertical scanning, with the same resolution. Then, a dot recording mode in which a preferred recorded image among the recorded images is selected, and mode designation information for designating the preferred dot recording mode is stored in a writable non-volatile memory. In actually recording the image, the mode designation information stored in the non-volatile memory is read, and the desired image is recorded onto a recording medium in the dot recording mode designated by the mode designation information.

Dot recording method and dot recording device

A specific image is first recorded according to a plurality of dot recording schemes which have an identical resolution and which are different at least in sub-scan feed operations. Then a desired dot recording scheme is selected corresponding to a desired recorded image which has been selected out of a plurality of recorded images recorded according to the plurality of dot recording schemes, and scheme selection information for specifying the desired dot recording scheme is stored into a rewritable non-volatile memory. In actual image recording, the scheme selection information stored in the non-volatile memory is read out, and a desired image is recorded on a recording medium according to the desired dot recording scheme specified by the scheme selection information.

Dot recording method and dot recording apparatus

A specific image is first recorded according to a plurality of dot recording schemes which have an identical resolution and which are different at least in sub-scan feed operations. Then a desired dot recording scheme is selected corresponding to a desired recorded image which has been selected out of a plurality of recorded images recorded according to the plurality of dot recording schemes, and scheme selection information for specifying the desired dot recording scheme is stored into a rewritable non-volatile memory. In actual image recording, the scheme selection information stored in the non-volatile memory is read out, and a desired image is recorded on a recording medium according to the desired dot recording scheme specified by the scheme selection information.

Aufzeichnungsgerät und -verfahren

Maximum-diagonal print mask and multipass printing modes, for high quality and high throughput with liquid-base inks

Full-color swaths produced in opposite scanning directions are offset to conceal or eliminate the color-cast effects of the varying deposition order which is inherent in bidirectional operation with in-line pens. Offsets are produced by unequal printing-medium advance between oppositely directed sweeps, or by alternating forward and reverse advance steps between oppositedly directed sweeps, or by both unequal and alternate-reverse steps; or by pen masking. Color-cast effects of varying drying/wicking time, too, are minimized.

Ink jet recording apparatus and ink jet recording method

Image data generating apparatus, image printing apparatus, and image data generating method

잉크젯 기록 장치에서의 복수회의 주사 및 잉크색에 따른 플레인의 도트 데이터 생성을 플레인마다의 오차 확산 처리에 의해 행하는 경우에, 그레인의 문제를 발생하는 일없이 행한다. 구체적으로는, 2치화 처리에서는, C의 분할 데이터 D8c/2에 대하여 오차 확산 처리가 이루어지고, C의 1패스째용의 2치(도트) 데이터 D2c1이 구해진다. 다음으로, M의 분할 데이터 D8m/2에 대하여 2치화 처리가 행하여진다. 이 때, M의 분할 데이터 D8m/2에 대하여, Kc1m1(D8c/2-D2c1)인 항을 부가하는 보정이 행하여진다. 그리고, 이 보정된 데이터[D8m/2+Kc1m1(D8c/2-D2c1)]에 대하여 오차 확산 처리가 행하여져 M의 1패스째용의 도트 데이터 D2m1이 구해진다. 이와 같이, 각 플레인의 생성에서는, 그 때까지 처리된 플레인 각각의 2치화 처리의 결과를 반영하는 보정을 행하고, 그 보정된 데이터에 대하여 오차 확산 처리를 행한다. 잉크젯 기록 장치, 노즐군, 마젠타, 시간, 멀티 패스 기록, 도트 데이터, 왕복 주사, 마스크 패턴 When the dot data generation of a plane according to a plurality of scanning and ink colors in the inkjet recording apparatus is performed by the error diffusion processing for each plane, the grain problem is not caused. Specifically, in the binarization process, an error diffusion process is performed on the divided data D8c / 2 of C, and the binary (dot) data D2c1 for the first pass of C is obtained. Next, the binarization process is performed on M divided data D8m / 2. At this time, correction is performed to add a term that is Kc1m1 (D8c / 2-D2c1) to M divided data D8m / 2. Then, an error diffusion process is performed on the corrected data [D8m / 2 + Kc1m1 (D8c / 2-D2c1)] to obtain dot data D2m1 for M's first pass. In this manner, in the generation of each plane, correction is performed to reflect the result of the binarization processing of each plane processed up to that time, and error diffusion processing is performed on the corrected data. Inkjet recording device, nozzle group, magenta, time, multi-pass recording, dot data, reciprocal scanning, mask pattern

Ink jet recorder

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Recording apparatus, data processing apparatus, mask manufacturing method, and mask pattern

Dither pattern creation method and image processing apparatus

Print image generation method and printing system

본 발명은 프린트 가능한 표면(16)상에 선택부를 점유하는 완전한 블랙부(86) 및 블랙부와 접하는 칼라부(84)를 구비하는 이미지를 프린트하는 잉크젯 프린팅 메카니즘(10)을 작동하는 방법에 관한 것이다. 상기 방법은 선택부상에 제 1 칼라의 초기 다수의 칼라 잉크 도트를 프린팅하고 칼라 잉크 도트를 프린팅한 후, 완전한 블랙부을 형성하기위해 선택부상에 블랙 잉크를 프린팅하는 것을 포함한다. 칼라 프린팅은 특정 블랙이 프린트 되기 전에 프린트되는 것을 전적으로 필요로 하지 않으며, 블랙부와 공존하는 균일한 부분밀도 패턴으로 프린트될 수 있다. The present invention relates to a method of operating an inkjet printing mechanism 10 for printing an image comprising a complete black portion 86 occupying a selection portion on a printable surface 16 and a color portion 84 in contact with the black portion will be. The method includes printing an initial plurality of color ink dots of a first color on a selection, printing the color ink dots, and then printing the black ink onto the selection to form a complete black portion. Color printing does not need to be printed before a particular black is printed, and can be printed with a uniform partial density pattern coexisting with the black portion.

Recording device

【課題】記録装置において記録される画像の画質の低下を抑える。【解決手段】記録用紙を搬送方向に搬送しつつ、紙幅方向に沿って並ぶ複数のヘッドユニットの複数のノズルからインクを吐出させて記録用紙に記録を行う。紙幅方向における重複範囲において、隣接する２つヘッドユニットの一部のノズル同士が搬送方向に重なっている。特定画像を記録するときに（Ｓ１０１：ＹＥＳ）、特定画像の記録位置が、紙幅方向において重複範囲内の部分を含んでいる場合には（Ｓ１０２：ＹＥＳ）、重複範囲における使用ノズルを変更する使用ノズル変更処理（Ｓ１０５）、及び、紙幅方向における特定画像の記録位置をずらす第１〜第３ずらし処理（Ｓ１０７，Ｓ１０９，Ｓ１１０）のうち、いずれか処理を行うことによって、特定画像を、１つのヘッドユニットのみによって記録する。【選択図】図３

Recording apparatus and recording method

Method of compensating image quality of inkjet printer

잉크젯 프린터의 화질보상방법이 개시된다. 개시된 화질보상방법은, 화상데이터의 슁글링 특성을 제어하는 복수개의 슁글링 모드와, 상기 슁글링 모드와 분리되어 설정되며 상기 슁글링 특성을 제외한 화상 특성을 제어하는 복수개의 인쇄데이터 생성모드의 조합 중 어느 한 조합을 선택하여 화질을 보상하는 것을 특징으로 하는 화질보상방법. 잉크 카트리지의 교체없이 노즐열화에 따른 화질저하를 보상할 수 있다.

Image recording device

Image forming method

本申请发明的图像形成方法为通过使用品红色墨水及除品红色墨水以外的两个颜色以上的其他墨水的喷墨记录装置，在瓦楞纸用记录介质上形成半色调图像的图像形成方法，其为在确定品红色墨水的喷射位置后，以成为与品红色墨水的喷射位置不同的位置的方式，确定两个颜色以上的其他墨水的喷射位置，由此通过喷墨记录装置在瓦楞纸用记录介质上多色印刷的图像中不会产生墨斑的有效方法。

Inkjet recording method, inkjet recording system, and inkjet recording apparatus

Image processing apparatus and method, and image forming apparatus and method

Recording apparatus and recording method

Image processing method and inkjet recording apparatus

Printing equipment and printing process

本发明提供能够充分抑制由于着陆位置的偏差引起的浓度不均的印刷装置和印刷方法。本发明的印刷装置是具有滑架单元、运送记录介质并在记录介质上实施印刷的装置。滑架单元具有喷出墨水的第一头、喷出同色的墨水的第二头，第二头与第一头在x轴方向上邻接，并且在y轴方向上重叠。在滑架单元的去路中，所述第一头印刷的第一图像的印刷浓度朝着记录介质的运送方向下游侧而逐渐减少，而且第一图像包括在X轴方向上连接了至少两个从所述第一喷嘴喷出的墨水的点的点组。另外，在滑架单元的往复运动中的返路中，第二喷嘴印刷第二图像，该第二图像对第一图像的印刷浓度的减少进行补充。

Ink jet printing apparatus and ink jet printing method

본 발명의 목적은 인쇄 영역의 각각이 상이한 종류의 잉크를 토출하는 복수의 인쇄 헤드에 의해 복수의 주사로 인쇄될 때 색 편차 없이 고속 인쇄와 고화질 인쇄 모두를 실현할 수 있는 잉크 제트 인쇄 장치를 제공하는 것이다. 이러한 목적을 위하여, 본 발명은 인쇄 헤드 내에 활동 노즐 그룹의 폭과 위치를 독립적으로 각각의 인쇄 헤드에 대해 제어하는 제어기를 갖는데, 활동 노즐 그룹은 인쇄를 위해 사용되는 인쇄 헤드 내의 복수의 노즐들을 나타내고, 제어기는 설정된 인쇄 조건에 따라 활동 노즐 그룹의 폭과 위치를 제어한다. 인쇄 헤드, 색 편차, 고속 인쇄 모드, 고화질 인쇄 모드, 활동 노즐, 잉크 토출 시간차

Inkjet printing system

在产生伴滴的喷墨打印装置中，由伴滴导致的图像问题被尽可能地减轻。为此，各参数被调整为满足关系，使得主滴和伴滴的落点位置间距离基本上符合索引图案的宽度的整数倍。结果，伴滴可能落在与由主滴形成的点交迭的位置上，该主滴在位于该伴滴的附近的像素的同一区域中被打印，这样防止伴滴落在不应打印点的空白位置上。由此，伴滴的影响被减轻，由伴滴导致的图像问题被减轻。

Alignment of differently sized printheads in a printer

An inkjet printer is disclosed with mixed print resolution capabilities. The printed dots have a high resolution monochrome component such as black and lower resolution components such as cyan, magenta and yellow. For increased throughput, a higher resolution black printhead has a wider swath. Various alignments between the printheads and printed dots are disclosed. In one embodiment, the top edges of the smaller color printheads are aligned in a scanning carriage at or near the top of the wider black printhead. In other embodiments, the bottom edges of the smaller color printheads are aligned at or near the bottom of the wider black printhead. In another embodiment, the small color printheads are centered with the wider black printhead.

Ink jet recording method, apparatus thereof, image processing method, and printing method for executing image processing method