Patent application number | Description | Published |
20120001972 | PRINTING APPARATUS AND PRINTING POSITION ADJUSTING METHOD THEREOF - A printing apparatus prints by discharging inks from respective nozzle arrays, the printhead having a plurality of nozzle arrays including at least a first nozzle array, a second nozzle array, and a third nozzle array, and the first nozzle array and the second nozzle array being arrayed to be shifted in a nozzle arrayed direction. The printing apparatus controls the first and second nozzle arrays to discharge inks to form a plurality of first patterns. The printing apparatus controls the third nozzle array to discharge inks to form second patterns while changing a shift amount in a direction which intersects with the nozzle arrayed direction with respect to the plurality of first patterns. The printing apparatus calculates an adjustment value required to adjust relative printing positions between the first nozzle array and the third nozzle array in the intersecting direction using the first patterns and the second patterns. | 01-05-2012 |
20120013664 | INKJET PRINTER AND INKJET PRINTING METHOD - The present invention relates to an inkjet printer that prints an image by a forward scan and a backward scan of printing heads. In the present invention, it is determined whether or not a color unevenness occurrence value set on the basis of values of unit image data constituting image data is more than a predetermined threshold value. If the color unevenness occurrence value is less than the threshold value, data that enable a dot to be formed in a unit area corresponding to the unit image data by the forward scan and the backward scan of the printing heads are generated. If the color unevenness occurrence value is more than the threshold value, data that enable a dot to be formed in the unit area only by any one of the forward scan and the backward scan by the printing heads are generated. | 01-19-2012 |
20120154469 | INKJET RECORDING APPARATUS AND INKJET RECORDING METHOD - An inkjet recording apparatus recording image data by causing a recording head to scan in the going-and-returning directions of a certain direction includes a record unit that finishes recording with a first scan involving a discharge of ink and a second scan involving the ink discharge in the returning direction, to first and second regions in the going direction, and that varies the number of scanning which does not involve the ink discharge between the first and second regions, a generation unit generating record data specifying the ink discharge or the ink non-discharge for each pixel region of the first and second regions, and a determination unit determining the going-direction recording ratio and the returning-direction recording ratio in the pixel regions, wherein the generation unit generates the record data based on the determined going-direction recording ratio and returning-direction recording ratio. | 06-21-2012 |
20120169810 | PRINTING APPARATUS AND ADJUSTMENT PATTERN PRINTING METHOD - The present invention provides an printing apparatus including a pattern printing unit for causing printing elements in partial regions of first and second printing element arrays to print adjustment patterns on a print medium, the adjustment patterns being for acquiring an amount of printing position shift of the second print head with respect to a printing position of the first print head, an acquisition unit for acquiring an amount of relative inclination between the first and second print element arrays, and a selection unit for selecting positions of the partial regions of the first and second printing element arrays based on the amount of relative inclination between the first and second print element arrays. As a result, consumption of media and ink upon a registration process and the amount of time required for the registration process can be reduced. | 07-05-2012 |
20120268752 | DATA PROCESSING APPARATUS, DATA PROCESSING METHOD AND INKJET PRINTING APPARATUS - A data processing apparatus, a data processing method and an inkjet printing apparatus are offered that are capable of reducing, in any kind of image, the occurrence of color unevenness while achieving a high speed output via a bi-directional printing. In order to achieve this, forward scan print ratio and backward scan print ratio with respect to a predetermined area comprising a plurality of pixels is set based on multi-value image data of the predetermined area. Next, binary print data for the forward scans and binary print data for the backward scans at the predetermined area is generated based on the multi-value image data and the set print ratios. According to such a configuration it is possible to increase the ratio of bi-directional printing with respect to areas at which color unevenness appears with difficulty, and increase the ratio of one-directional printing at areas where color unevenness appears with ease. | 10-25-2012 |
20120287203 | INK JET PRINTING APPARATUS AND INK JET PRINTING METHOD - Even if colors are printed in the same order for each band, time difference unevenness is suppressed which results from a difference in duration from the end of the first scan until the beginning of the second scan. An ink jet printing apparatus completely prints a scan area with a width corresponding to a predetermined length of a nozzle line. The ink jet printing apparatus includes conveying means for moving the print medium, generation means for generating print data in such a manner that in the two scans for completely printing the scan area with the width corresponding to the predetermined length, a print duty for the first scan is higher than a print duty for the second scan, and print control means for carrying out the first scan in an identical direction for all the scan areas completely printed by the two scans. | 11-15-2012 |
20140218427 | INKJET PRINTING APPARATUS AND INKJET PRINTING METHOD - An apparatus including: a print head having a plurality of nozzle arrays; a scanning unit configured to perform scanning by the print head in a first direction and in a second direction; an adjusting unit configured to adjust an amount of the ink ejection from a first nozzle unit consisted from predetermined number of nozzles arranged in one of end positions of a first nozzle array, the number of nozzle arrays arranged in a side of the first direction from the first nozzle array is lower than the number of nozzle arrays arranged in a side of the second direction from the first nozzle array; and a control unit, the adjusting unit adjusts the amount of the ink ejection such that amount of ink ejection in the scan of the first direction is smaller than amount of ink ejection in the scan of the second direction. | 08-07-2014 |
20150070427 | PRINTING APPARATUS AND PRINTING POSITION ADJUSTING METHOD THEREOF - A printing apparatus prints by discharging inks from respective nozzle arrays, the printhead having a plurality of nozzle arrays including at least a first nozzle array, a second nozzle array, and a third nozzle array, and the first nozzle array and the second nozzle array being arrayed to be shifted in a nozzle arrayed direction. The printing apparatus controls the first and second nozzle arrays to discharge inks to form a plurality of first patterns. The printing apparatus controls the third nozzle array to discharge inks to form second patterns while changing a shift amount in a direction which intersects with the nozzle arrayed direction with respect to the plurality of first patterns. The printing apparatus calculates an adjustment value required to adjust relative printing positions between the first nozzle array and the third nozzle array in the intersecting direction using the first patterns and the second patterns. | 03-12-2015 |