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:
Jun. 28, 2011
Filed:
Aug. 22, 2007
Applicant:
Hiroyuki Kidaka, Abiko, JP;
Inventor:
Hiroyuki Kidaka, Abiko, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In the image forming apparatus, in ending an image forming operation, a bias voltage having an opposite polarity from the transfer bias voltage is applied to the primary transfer device when at least a region passes through the primary transfer portion, the region passing through the development portion in a state in which the development bias voltage is applied in an uncharged region in the surface of the image bearing member after a charging operation of the charging device is stopped.