Patent ID: 6621991
Filing Date: 2003-09-16
Classification: G03G

Abstract:
An image forming apparatus for forming an image which has a predetermined target density, comprising:a photosensitive member; electrifying means for electrifying a surface of said photosensitive member; exposing means for forming an electrostatic latent image on the electrified surface of said photosensitive member; developing means for visualizing said electrostatic latent image with a toner to form a toner image; transferring means for transferring the toner image from said photosensitive member to a transfer medium; density detecting means for detecting an image density of a patch image on said photosensitive member; and control means for adjusting the image density of said toner image to a predetermined target density, based on a result of a detection determined by said density detecting means, wherein said patch image is formed by a plurality of one-dot lines which are spaced apart from each other by at least a two line interval.