The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2007
Filed:
Jun. 30, 2005
Optical writing unit and image forming apparatus having an optical system casing and a cleaning tool
Applicant:
Masanori Namba, Tokyo, JP;
Inventor:
Masanori Namba, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 21/00 (2006.01); B41J 2/435 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical writing unit for use in an image forming apparatus, wherein the optical writing unit includes an optical system which generates a light beam to write an electrostatic latent image on an image carrying member of the image forming apparatus, and a casing which encases the optical system. The casing includes an opening portion and a transparent member which externally seals the opening portion and has a top surface higher than a surface of the casing with a predetermined height and an optical writing area through which the light beam emits.