Image forming apparatus including control unit for controlling charging bias and laser power

Patent metadata

Field	Value
Publication number	US-9134643-B2
Application number	US-201313866778-A
Country	US
Kind code	B2
Filing date	Apr 19, 2013
Priority date	Apr 24, 2012
Publication date	Sep 15, 2015
Grant date	Sep 15, 2015

Abstract

The image forming apparatus is capable of executing a color mode for forming images of a plurality of colors using the plurality of developer bearing members, and a mono-mode for forming images of mono color using one developer bearing member of the plurality of developer bearing members. The control unit, when the color mode is executed, determines the charging bias and, the first laser power and the second laser power for respective image bearing members, based on information about the plurality of image bearing members. The control unit, when the mono-mode is executed, determines the charging bias and, the first laser power and the second laser power to image bearing member for mono-mode, based on information about image bearing member for mono-mode.

First claim

What is claimed is:

1. An image forming apparatus that forms an image on a recording material, the image forming apparatus comprising:
a plurality of image bearing members;
a plurality of charging devices each configured to charge a corresponding image bearing member, by the same charging bias supplied from a mutually shared first power source, and to form a predetermined charging potential on a surface of the image bearing member;
an exposure device configured to expose with…

Assignees

• Canon Kk

Inventors

• Kihara Takayoshi
• Adachi Motoki
• Hasegawa Hideaki

Classifications

• G03G15/0266 Primary

  Physics · mapped topic

• G03G15/047

  Physics · mapped topic

• G03G15/043

  Physics · mapped topic

• G03G15/011

  Physics · mapped topic