Patent Number: 6,253,039

Title: Color image forming apparatus

Abstract: A color image forming apparatus is capable of reducing color deviation of an image due to the influence of a variation in load of an intermediate transfer member and of carrying out high speed printing. A control unit for controlling an image forming process on the basis of the size of a recording medium sets, where a recording medium of a size smaller than the longest image length capable of forming a color image is subject to continuous image formation, a first mode for continuously carrying out a development process for forming a latent image and a toner image, and a second mode of incorporating a stop process for stopping the development process in the midst of the development process. This enables reduction of color deviation of an image caused by the influence of a variation in load of an intermediate transfer member and high speed printing also.

Inventors: Nakano; Masahiro (Hitachi, JP), Saito; Masahiko (Kitaibaraki, JP), Sasaki; Akira (Hitachi, JP), Wakamatsu; Kazuhiro (Hitachi, JP)

Assignee: Hitachi, Ltd.

International Classification: G03G 15/01 (20060101); G03G 015/16 (); G03G 015/01 ()

Expiration Date: 06/26/2018