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:
May. 26, 2015
Filed:
May. 16, 2013
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Motoki Adachi, Ashigarakami-gun, JP;
Hideaki Hasegawa, Suntou-gun, JP;
Takayoshi Kihara, Mishima, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
G03G 15/553 (2013.01); G03G 15/5037 (2013.01); G03G 15/5079 (2013.01); G03G 15/55 (2013.01);
Abstract
An image forming apparatus includes a rotatable photosensitive member, an exposure unit for exposing a surface of the photosensitive member to light, and a detecting portion for detecting a lifetime of the photosensitive member on the basis of a thickness of a charge transporting layer of the photosensitive member and an amount of the light received by the charge transporting layer of the photosensitive member.