Patent ID: 7385737
Filing Date: 2008-06-10
Classification: H04N

Abstract:
1. An image processing apparatus for forming a color image on an image holding member based on image data, and transferring and fixing the color image onto a print medium, comprising: a first detector, arranged to detect an image characteristic of the image transferred and fixed onto the print medium; a second detector, arranged to detect an image characteristic of an image formed on the image holding member; a controller, arranged to transfer and fix a first pattern to detect an image characteristic onto the print medium by a sequence different from normal image formation, and to control a density correcting condition for image formation on the image holding member based on the image characteristic of the first pattern, detected by said first detector; and a corrector, arranged to form a second pattern to detect an image characteristic on the image holding member after completion of control of the density correcting condition for image formation by said controller, and to hold the image characteristic of the second pattern detected by said second detector as reference information, and, in the normal image formation, to form the second pattern without an image formation area on the image holding member in the normal image formation, and to correct the density correcting condition using a difference between an image characteristic of the second pattern detected by said second detector in the normal image formation and the reference information under correcting processing for the density correcting condition.