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:
Feb. 24, 2009
Filed:
Jul. 11, 2006
Shinichi Takata, Abiko, JP;
Akihiko Sakai, Abiko, JP;
Takuya Kawamura, Tokyo, JP;
Yuichiro Maeda, Kashiwa, JP;
Shinichi Takata, Abiko, JP;
Akihiko Sakai, Abiko, JP;
Takuya Kawamura, Tokyo, JP;
Yuichiro Maeda, Kashiwa, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
An image forming apparatus which is capable of forming an excellent image while suppressing reduction in productivity to a minimum even when an abnormality occurs in detection of an HP mark on an intermediate transfer member. When there occurs abnormality in detection of any of HP marks, an alternate signal is generated in place of a signal associated with a mark the detection of which is determined to be abnormal, and image formation is carried out with reference to the time of normal HP mark detection and the alternate signal.