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. 06, 1998
Filed:
Dec. 06, 1995
Applicant:
Inventors:
Kazuo Yoshinaga, Kawasaki, JP;
Kiyoshi Sakai, Hachiohji, JP;
Yukio Nagase, Tokyo, JP;
Yuichi Hashimoto, Tokyo, JP;
Mamoru Tanaka, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
347131 ; 347254 ;
Abstract
An image forming apparatus has an electrophotographic photosensitive member with a support, a photosensitive layer with a thickness (T), a charging subunit, an exposure subunit, a developing subunit, and a transfer subunit. The exposure subunit illuminates the charged photosensitive member with a light beam having a spot area (S), such that the product S.times.T is 5,000-12,000 .mu.m.sup.3.