Patent ID: 7633646
Filing Date: 2009-12-15
Classification: H04N

Abstract:
1. An image forming apparatus which forms a color image on an image forming member on the basis of image information, comprising: image forming unit for forming a color reference image on the image forming member on the basis of reference image information for color correction; colorimetric unit for measuring a color of the color reference image formed by said image forming unit and outputting color information; image processing unit for generating a gray level correction table on the basis of the color information output from said colorimetric unit; and control unit for correcting the image information on the basis of the gray level correction table generated by said image processing unit and controlling said image forming unit so as to form a color image on the image forming member on the basis of the corrected image information; operation unit which is so operated as to select one of a plurality of image structures in association with a color image to be formed on the image forming member, the color reference image comprising a plurality of color reference images with different densities and the image structure selected by said operation unit; and correction control unit for controlling said image processing unit and said image forming unit to generate gray level correction tables of other image structures with reference to a grayscale characteristic table of the image structure generated by said image processing unit; and wherein when n gray level correction tables each identical to the gray level correction table are to be generated, in a case of generating the gray level correction table of a first image structure, said correction control unit in a case of generating the gray level correction table of a second image structure, said correction control unit