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. 23, 1997
Filed:
May. 16, 1996
Masaharu Kanazawa, Suita, JP;
Toshiya Natsuhara, Takarazuka, JP;
Kazuyoshi Hara, Toyohashi, JP;
Yasuo Tanaka, Okazaki, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
An image forming apparatus having a toner image carrying member which carries a toner image, an intermediate transfer member or sheet transport type transfer member opposite to the toner image carrying member, a charging device which charges the transfer member for transferring the toner image from the toner image carrying member to the intermediate transfer member or carried sheet, a grounding electrode which contacts the transfer member, an ammeter which measures an electric current through the grounding electrode, and a control device which controls the charging device based on a measured value of the ammeter so as to stabilize said measured value. A power source is connected to the charging device through a resistance and the grounding electrode is in parallel with circuit from the resistance to the toner image carrying member.