| 摘要 |
PURPOSE: To improve the reproducibility of recorded colors by correcting the correction data table of a setting means on the basis of Y, M, and C data of a read test pattern. CONSTITUTION: An image processing part inputs color gradation data, generated by converting the output signals of CCDs 31r, 31g, and 31b into 8-bit data through an A/D converter 32, to a shading correcting circuit 33. The circuit 33 corrects uneveness in optical illuminance among the color gradation data and variance in sensitivity among internal terminal elements of the CCDs 31r, 31g, and 31b and outputs the result to aγcorrecting circuit 34. The circuit 34 alters gradations according to characteristics of ink and outputs the resulting data to a complementary color generating circuit. The circuit 35 converts the data into gradation data of cyan C, magenta M, and yellow Y as the complementary colors of the gradation data and outputs them to a masking circuit 36. The masking process data of the circuit 36 are corrected with the Y, M, and C data converted by the circuit 35. Then the output of the circuit 36 is processed by an UCR and black generating circuit 37 into recordable gradation data, which are printed at a color recording part 3.
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