Image forming apparatus, optical print head, and process cartridge with plates for positioning image bearing member and developing member

Patent metadata

Field	Value
Publication number	US-8965244-B2
Application number	US-201113301184-A
Country	US
Kind code	B2
Filing date	Nov 21, 2011
Priority date	Dec 10, 2010
Publication date	Feb 24, 2015
Grant date	Feb 24, 2015

Abstract

An image forming apparatus having an image bearing member, an optical print head to irradiate the image bearing member with light to form a latent image thereon, a developing device to develop the latent image with a developing agent to obtain a visual image, and front and rear plates that sandwich at least the image bearing member and the developing device from opposite directions to position at least the image bearing member and the developing device thereof, the plates having focus direction position determining reference surfaces and sub-scanning direction position determining reference surfaces the optical print head contacts to position the optical print head.

First claim

What is claimed is:

1. An image forming apparatus comprising:
an image bearing member;
an optical print head that extends in a longitudinal direction along the image bearing member to irradiate the image bearing member with light to form a latent image thereon;
a frame on which the optical print head is fixed, the frame extending in the longitudinal direction of the optical print head and extending on each end thereof beyond corresponding ends of the optical print head, and ea…

Assignees

• Shimizu Kenichi
• Ricoh Co Ltd

Inventors

• Shimizu Kenichi

Classifications

• G03G15/04054

  Physics · mapped topic

• G03G15/0435 Primary

  Physics · mapped topic