| 摘要 |
PURPOSE:To easily perform color adjustment by reading a color characteristic related to a pattern information recorded from a recording medium, and adjusting a color difference between the read color characteristic of the information and the pattern information stored in a storing means by an adjusting means. CONSTITUTION:A pattern generator 30 stores the mixing ratio of colors in the form of a table. The key of a test mode, not shown in a figure, is pushed, and a predetermined pattern is received from the pattern generator 30, and the color classified by the pattern is printed. Next, the user of a copying machine sets a paper 21 on which prepared 64 colors are printed on the fixed position of an original stand glass 2 in a similar way that an original is set. At this time, a reference white plate is placed at the top end of the scanning direction of the original stand glass, and a reflected light from the reference white plate is read by a CCD 6, and by using the output value of the white plate, a shading correction is performed for a preceding output values Y1', M1', C1'.
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