CALIBRATION DEVICE, METHOD AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To easily adjust gray balance without sacrificing the gradation characteristic of each color. SOLUTION: A test chart print data storage part 27 stores print data of a plurality of patches corresponding to a combination of density variations of YMC each color to be gray when the maximum output density of YMC each color is changed. A three-dimensional LUT data storage part 25 stores a plurality of three-dimensional LUTs corresponding to a combination of density variations of YMC each color so that gray balance is maintained when the maximum output density of YMC each color is changed. A three-dimensional LUT selection part 26 selects the three-dimensional LUT data corresponding to the patch number inputted by an operation panel 11 from thirteen three-dimensional LUT data stored in the third-dimensional LUT data storage part 25. A color conversion processing part 22 performs color conversion processing to RGB bit map image data to be printed using the selected three-dimensional LUT. COPYRIGHT: (C)2008,JPO&INPIT