Patent ID: 7653337
Filing Date: 2010-01-26
Classification: G03G

Abstract:
1. An image forming apparatus which forms a toner image with a plurality of color toner comprising: a toner image forming unit adapted to form the toner image on an image bearing member on the basis of an input image information signal from an external device; an image detecting unit adapted to detect the toner image formed on the image bearing member and to output a first data obtained by the detection; and a control unit adapted to calculate a second data from the input image information signal, and compare the first data output by said image detecting unit with the second data calculated by said calculating unit to determine, on the basis of the comparison result, whether or not color misregistration occurs in the toner image with the plurality of color toner on the image bearing member, wherein said control unit carries out a color misregistration correction processing of the toner image in the case where said control unit determines that the color misregistration occurs, wherein the detection by said image detecting unit and the calculation by said calculating unit are operated in a predetermined area set on the basis on the input image information signal from the external device, and wherein said control unit sets a portion including the toner image formed by the plurality of color toner on the basis of the input image information signal from the external device as the predetermined area.