Patent ID: 7099044
Filing Date: 2006-08-29
Classification: H04N

Abstract:
1. A color image forming apparatus comprising: a color scanner, wherein the color scanner is configured to read a color image from an original, and wherein the color scanner is configured to output color image data; a color printer configured to form an image on a recording medium in accordance with the color image data; a patch image creator that is configured to create a patch image on the recording medium in accordance with a patch data stored in a storage area, by using the color printer; a patch data extractor that is configured to extract read patch data from image data obtained by reading the patch image formed by the patch image creator, using the color scanner; a gradation estimating processor that is configured to estimate record gradation of the patch data on the basis of the read patch data extracted by the patch data extractor; and a correction processor that is configured to correct an input color image signal on the basis of the record gradation estimated by the gradation estimating processor and the patch data stored in the storage area; wherein the color printer is configured to form an image on the recording in accordance with the color image signal corrected and output from the correction processor.