Patent application number | Description | Published |
20090086235 | Color separation into plural ink components including primary color ink and spot color ink - An ink set that includes a plurality of chromatic primary color inks that can reproduce achromatic color in combination with each other and at least one spot color ink having a hue different from any of the chromatic primary color inks is prepared. A color to be reproduced on a printing medium in accordance with a given input color is termed a reproduction color, and a combination of ink amounts for inks in the ink set to be used to reproduce the reproduction color on the printing medium is termed a color separation ink amount set. When a saturation parameter value that is correlated with the saturation of the reproduction color falls within a first range that is close to achromaticity, the ink amount of the spot color ink included in the color separation ink amount set is adjusted such that it decreases in accordance with a change in the saturation parameter value in the direction of lower saturation. | 04-02-2009 |
20090128838 | Image Processing Device, Image Processing Method, and Image Processing Program - An image processing device and image processing method maintain hue and prevent a drop in print quality while also reducing consumption of recording materials. For example, a host computer | 05-21-2009 |
20090185208 | Color separation into a plurality of ink components including primary color ink and spot color ink - Utilizing an ink set that includes a plurality of chromatic primary color inks that, when used in combination, can reproduce achromatic color, and at least one spot color ink of hue different from any of the plurality of chromatic primary color inks. Color to be reproduced on a print medium according to any one input color is termed “reproduction color”, and the combination of ink quantities in the ink set for reproducing the reproduction color on the print medium is termed the “color separation ink quantity set.” The ink quantity of the spot color ink included in the color separation ink quantity set is adjusted in accordance with a lightness parameter value which is correlated to lightness of reproduction color, so as to reduce ink quantity at a rate of change greater than the rate of change of the lightness parameter in the direction of increasing brightness. | 07-23-2009 |
20090244156 | Reduction of dependence of color appearance on light source - A look up table LUT with specific gray reproduction characteristics is used for converting RGB image data to multi-tone data of ink colors. The gray reproduction characteristics of LUT are set such that the color difference ΔE of a gray color area with an arbitrary tone level in the L*a*b* color system is kept at about 4 or less, assuming that the results are observed under two different light sources, such as standard light D50 and standard light A, respectively. | 10-01-2009 |
20100053650 | Image Processing Device, Image Processing Method, And Image Processing Program - An image processing device, an image processing method, and an image processing program stored on a computer-readable medium can select a color conversion table based on an image deposition level and are not dependent upon the media setting specifying the print medium. A host computer | 03-04-2010 |
20120075372 | Method of Controlling a Print Control Device, Printer Control Method, and Printer - Ink ejection problems of black ink nozzles are compensated for by forming dots by mixing cyan, magenta, and yellow inks without reducing print quality. When a nozzle that discharges black ink becomes unable to properly eject ink, cyan, magenta, and yellow inks are ejected from respective nozzles to the discharge area on the recording medium to which the defective nozzle should eject ink. The volume of cyan, magenta, and yellow ink that is ejected is set based on the amount of black ink that should be ejected by the defective nozzle. | 03-29-2012 |
20140139577 | Printing Apparatus And Printing Method - A printing apparatus which can form an image formation dot for printing an image defined as an object to be printed on a printing medium, the printing apparatus comprising a line head which includes a nozzle array arraying a plurality of nozzles, by moving at least one of a printing medium and the head, in a direction intersecting a direction relatively changing a position of the printing medium and the head and a control unit which performs a specific operation forming a flushing dot besides the image formation dot by discharging a liquid on the line head, wherein, when a specific condition increasing viscosity of the liquid is satisfied, the control unit performs the specific operation of discharging the liquid to the printing medium and the specific operation of discharging the liquid to a place other than the printing medium. | 05-22-2014 |
20140152730 | Printing Apparatus and Printing Method - A printing apparatus that includes a head unit in which a plurality of heads are disposed so that parts of nozzle rows overlap with each other between the heads and a control unit configured to make the head unit execute a specified operation for forming flushing dots other than image formation dots on a print medium by discharging liquid through the nozzles. The control unit makes the head unit execute the specified operation in which a liquid amount discharged in the specified operation per nozzle that does not belong to an overlap area where parts of the nozzle rows overlap with each other between the heads is larger in a set movement distance thereof than a liquid amount discharged in the specified operation per nozzle that belongs to the overlap area in a set movement distance thereof, if a specified condition for execution of the specified operation is satisfied. | 06-05-2014 |
20140176632 | Defective Printer Nozzle Compensation Control - Ink ejection problems of black ink nozzles are compensated for by forming dots by mixing cyan, magenta and yellow inks without reducing print quality. When a nozzle that discharges black ink becomes unable to properly eject ink, cyan, magenta, and yellow inks are ejected from respective nozzles to the discharge area on the recording medium to which the defective nozzle should eject ink. The volumes of the cyan, magenta and yellow inks that are ejected are set to effectively compensate for the missing black dot. | 06-26-2014 |