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. 05, 2013
Filed:
Apr. 10, 2012
Tatsuya Kinukawa, Mishima, JP;
Yoshiro Saito, Susono, JP;
Tomoaki Nakai, Numazu, JP;
Kazuhiro Funatani, Mishima, JP;
Hiroyuki Seki, Mishima, JP;
Kimitaka Ichinose, Suntou-gun, JP;
Tatsuya Kinukawa, Mishima, JP;
Yoshiro Saito, Susono, JP;
Tomoaki Nakai, Numazu, JP;
Kazuhiro Funatani, Mishima, JP;
Hiroyuki Seki, Mishima, JP;
Kimitaka Ichinose, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided an image forming apparatus that accurately obtains the dynamic characteristic of the apparatus when a foreign substance is adhered to a driving roller for driving an endless belt, such as a facing roller. To accomplish this, the image forming apparatus uses an optical sensor to detect information of a foreign substance on the facing roller. When it is determined that there is no foreign substance information, the image forming apparatus executes profile detection of an intermediate transfer belt using the nominal circumference of the facing roller. When the optical sensor detects foreign substance information, the image forming apparatus measures the circumference of the facing roller, and performs profile detection of the intermediate transfer belt using the measured circumference of the facing roller.