Patent ID: 9037011
Filing Date: 2015-05-19
Classification: G03G

Abstract:
1. A color-image forming apparatus including image forming units for individual colors and a belt, the image forming units each including a photosensitive member that is rotationally driven, a processing unit that is disposed close to the periphery of the photosensitive member and that is configured to act on the photosensitive member, and a light irradiation unit configured to emit light to form an electrostatic latent image on the photosensitive member, wherein toner images are formed on the belt by operating the image forming units, the apparatus comprising: a forming unit configured to form electrostatic latent images for color misregistration correction on the photosensitive members of the individual colors by controlling the light irradiation units corresponding to the individual colors; a power supply unit for each of the processing units corresponding to the individual colors; a detecting unit configured to detect, for each of the colors, the output of the power supply unit when the electrostatic latent image for color misregistration correction formed on each of the photosensitive members of the individual colors passes through a position facing the processing unit; and a controller configured to perform color-misregistration correction control so as to return a color misregistration state to a reference state on the basis of a detection result of the detecting unit, wherein when the color-misregistration correction control is to be performed, the intensity of at least one of the apply voltage of the processing unit and the output of the light irradiation unit is set higher than that during normal image formation.