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. 18, 2012
Filed:
Mar. 15, 2010
Applicant:
Kenichi Shibuya, Toride, JP;
Inventor:
Kenichi Shibuya, Toride, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image forming apparatus includes a rotatable photosensitive member; charging device for electrically charging the photosensitive member by being supplied with a charging bias; a current detecting device for detecting a DC current flowing when a test bias in the form of a predetermined DC voltage biased with a predetermined AC voltage is applied to the charging device so as to cause discharging between the photosensitive member and the charging device; and a control device for controlling the charging bias on the basis of an output of the current detecting device.