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:
Aug. 26, 2014
Filed:
Dec. 06, 2011
Shinji Yamamoto, Kawasaki, JP;
Yasumi Yoshida, Yokohama, JP;
Tadashi Matsumoto, Tokyo, JP;
Takashi Hiratsuka, Kawasaki, JP;
Toshihiro Fukasaka, Kawasaki, JP;
Shinji Yamamoto, Kawasaki, JP;
Yasumi Yoshida, Yokohama, JP;
Tadashi Matsumoto, Tokyo, JP;
Takashi Hiratsuka, Kawasaki, JP;
Toshihiro Fukasaka, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An apparatus includes a belt member, a first image bearing member, a second image bearing member provided downstream of the first image bearing member, and a first steering roller provided upstream of the first image bearing member for controlling a widthwise position of the belt member by inclining at a position. In addition, a second steering roller is provided downstream of the second image bearing member and controls the widthwise position of the belt member, a first detecting member detects a widthwise position of the belt member on the first image bearing member, and a second detecting member detects a widthwise position of the belt member on the second image bearing member. A first control portion controls an inclination of the first steering roller on the basis of a detection result of the first detecting member, and a second control portion controls the second steering roller on the basis of a detection result of the first detecting member before a predetermined time and a current detection result of the second detecting member.