| 摘要 |
PROBLEM TO BE SOLVED: To keep the high precision of the color reproduction of special colors in a proof image at the outputting of the proof image, in order to execute printing including not only a process color but also special colors, to facilitate data control and suppress the degree of the increase in the memory capacity, when the kinds of printers, etc., for outputting the proof image are increased. SOLUTION: Printing image data is converted to use for a proofer through a printing condition converting process 311 for transforming printing CMYK to L*a*b*, a special color referring process 312 for converting the name of the special color to the L*a*b*, a printer condition converting process 313 for converting the L*a*b* to the proofing RGB and a combining process 314 for combining the process color and the special color.
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