Image forming apparatus

Patent metadata

Field	Value
Publication number	US-8958730-B2
Application number	US-201313970831-A
Country	US
Kind code	B2
Filing date	Aug 20, 2013
Priority date	Sep 6, 2012
Publication date	Feb 17, 2015
Grant date	Feb 17, 2015

Abstract

To accomplish this, an image forming apparatus of the present invention determines whether the temperature of an exposure unit is changing at a predetermined gradient or more, detects misregistration by forming patches and executes first registration adjustment amount calculation processing for detecting a registration adjustment amount, in a case where the temperature is not changing at the predetermined gradient or more, and executes second registration adjustment amount calculation processing for predicting the misregistration amount according to the temperature of the exposure unit measured by a first sensor, in a case where the temperature is changing at the predetermined gradient or more.

First claim

What is claimed is:

1. An image forming apparatus comprising:
an exposure unit configured to expose a photosensitive member in accordance with an image signal to form an electrostatic latent image;
a developing unit configured to develop the electrostatic latent image using a toner;
a transfer unit configured to transfer a toner image developed by the developing unit to an image carrier;
a first sensor configured to measure a temperature of the exposure unit;
a determinati…

Assignees

• Canon Kk

Inventors

• Miura Yukihiro

Classifications

• G03G15/0189

  Physics · mapped topic

• G03G15/55

  Physics · mapped topic

• G03G2215/0158

  Physics · mapped topic

• G03G21/20

  Physics · mapped topic

• G03G15/011 Primary

  Physics · mapped topic