COLOR CORRECTION METHOD IN COLOR PRINTER

PURPOSE:To prevent the deterioration in color gradation reproducibility, by a method wherein, the red content density, the green content density, and the blue content density of each part of a recording image are detected, and respective recording color densities are correspondingly corrected by an image recording means. CONSTITUTION:Test pattern data DT corresponding to a test recording image pattern 6' is supplied to a printing head 5 as printing data DP, thereafter being subjected to a light exposure on recording media by a light exposing part 1 to be developed and fixed by a developing part 2. A test hard copy C is led to a RGB density detection part 7, therein the density is obtained as RGB data D1, and the data D1 is sent to an arithmetic part 9. Then, by changing the data of a look-up table LUT according to correction data D2 which was calculated by the arithmetic part 9, the printing data DP sent from a color correction part 4 is changed. In this manner, a RGB emission strength in the printing head 5 is corrected. The above action is repeated until the same RGB strength is established at each point in areas P1-P4. Therefore, the correction can be carried out with the addition of a variable factor of color deterioration.