| 摘要 |
PROBLEM TO BE SOLVED: To minimize the influence of uneven density generated by a printer to reading of a test pattern for calibration. SOLUTION: In the calibration for the printer having the possibility of generating the uneven density in a direction vertical to a paper feeding direction, the direction of the uneven density is set up vertically to the patch array direction of each color in the test pattern, so that the whole patch of a certain color can be prevented from being faintly printed out even when the patch is faintly printed out due to the influence of the uneven density. Consequently a situation that a state of the printer can't be faithfully reflected to read result of the color can be evaded.
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