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:
Mar. 12, 1996
Filed:
Dec. 23, 1993
Applicant:
Inventors:
Tadashi Furuya, Yokohama, JP;
Junji Araya, Yokohama, JP;
Hideyuki Yano, Yokohama, JP;
Harumi Kugoh, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355208 ; 355219 ;
Abstract
A charging apparatus includes a charging member for charging the member to be charged; a power source for supplying electric power to the charging member; a power source for supplying a constant small DC current to the charging member; and a device for determining a voltage to be applied to the charging member; wherein while the constant small DC current is supplied to the charging member, a voltage supplied to the charging member is detected and in response to the detected voltage, the voltage determining device determines the voltage to be applied to the charging member.