| 摘要 |
PROBLEM TO BE SOLVED: To precisely adjust both of a luminance and a chromaticity of illumination light corresponding to a designing specification. SOLUTION: When a halftone dot like print pattern is formed on a light control part of an instrument, a detection value P1 indicative of a luminance and a chromaticity before printing is obtained by measuring or computing by each halftone dot. A difference between a target value P0 on designing relating to a luminance and a chromaticity after printing and the detected value is obtained as a color difference by each halftone dot. A correction value for canceling the color difference is determined by each parameter of a chromaticity corresponding to a position of an adjustment point P2 which is positioned on a position in an opposite direction of viewing the detected value from the target value on a chromaticity space indicative of the luminance and the chromaticity and is positioned in the vicinity of a position deviated from the target value by a level corresponding to the color difference. After that, each distribution of a printing primary color is determined by each halftone dot in accordance with the correction value. COPYRIGHT: (C)2011,JPO&INPIT |
