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. 04, 2012
Filed:
May. 14, 2010
Jun Nakagaki, Abiko, JP;
Jiro Shirakata, Chigasaki, JP;
Yoritsugu Maeda, Moriya, JP;
Satoshi Atarashi, Toride, JP;
Yukihiro Fujiwara, Toride, JP;
Dai Kanai, Abiko, JP;
Jun Nakazato, Kashiwa, JP;
Jun Nakagaki, Abiko, JP;
Jiro Shirakata, Chigasaki, JP;
Yoritsugu Maeda, Moriya, JP;
Satoshi Atarashi, Toride, JP;
Yukihiro Fujiwara, Toride, JP;
Dai Kanai, Abiko, JP;
Jun Nakazato, Kashiwa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a rotatable belt member; a stretching roller for stretching the belt member; a plurality of line like marks which are arranged in a rotational direction of the belt member and are formed stepwisely on a surface of the belt member, the marks being tilted from a rotational axis direction of the belt member at least at end portions thereof on sides close to an end surface of the belt member; and control means for controlling rotation of the belt member on the basis of a result of detection of the marks.