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:
Dec. 10, 1996
Filed:
Sep. 18, 1995
Applicant:
Inventors:
Takeo Yamamoto, Kawasaki, JP;
Takahiro Noguchi, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355208 ; 355210 ;
Abstract
An electrophotographic apparatus includes an electrophotographic photosensitive member; a charging member contactable to the photosensitive member for charging the photosensitive member at a charging position; exposure means for exposing the photosensitive member to electrically discharging the photosensitive member, wherein when a region of the photosensitive member discharged by the exposure means is at the charging position, a voltage-current characteristic between the charging member and the photosensitive member is detected; changing means for changing an incident light quantity to the photosensitive member from the exposure means.