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:
Sep. 19, 2006
Filed:
Aug. 27, 2004
Toshiyuki Andoh, Kanagawa, JP;
Yasumori Nagahara, Kanagawa, JP;
Tadashi Shinohara, Kanagawa, JP;
Yuuji Matsuda, Tokyo, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Nobuto Yokokawa, Saitama, JP;
Masato Yokoyama, Kanagawa, JP;
Yohhei Miura, Tokyo, JP;
Toshiyuki Takahashi, Kanagawa, JP;
Jun Hosokawa, Tokyo, JP;
Toshiyuki Andoh, Kanagawa, JP;
Yasumori Nagahara, Kanagawa, JP;
Tadashi Shinohara, Kanagawa, JP;
Yuuji Matsuda, Tokyo, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Nobuto Yokokawa, Saitama, JP;
Masato Yokoyama, Kanagawa, JP;
Yohhei Miura, Tokyo, JP;
Toshiyuki Takahashi, Kanagawa, JP;
Jun Hosokawa, Tokyo, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A belt driving controller includes a driving roller having a radius ra plurality of driven rollers that is driven by rotation of the driving roller, the driven rollers having a radius ran endless belt that is wound on the driving roller and the driven rollers and an encoder that is attached to one of the driven rollers, and that outputs a signal. The rotation of the driving roller is controlled based on the signal from the encoder, and ()×(r/r)≦1 is satisfied where αis a correction coefficient for a fluctuation in thickness of the endless belt caused by a belt winding angle on the driving roller, and αis a correction coefficient for a fluctuation in the thickness on the driven roller.