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:
Oct. 11, 2011
Filed:
Apr. 08, 2009
Takuya Murata, Tokyo, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Yuji Matsuda, Tokyo, JP;
Yuichiro Ueda, Kanagawa, JP;
Hiromichi Matsuda, Kanagawa, JP;
Toshiyuki Andoh, Kanagawa, JP;
Joh Ebara, Kanagawa, JP;
Yohei Miura, Tokyo, JP;
Takuya Uehara, Tokyo, JP;
Takuya Murata, Tokyo, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Yuji Matsuda, Tokyo, JP;
Yuichiro Ueda, Kanagawa, JP;
Hiromichi Matsuda, Kanagawa, JP;
Toshiyuki Andoh, Kanagawa, JP;
Joh Ebara, Kanagawa, JP;
Yohei Miura, Tokyo, JP;
Takuya Uehara, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
In an image forming apparatus, during a rotation of an intermediate transfer belt performed after a contact-state-changing rotation in which the number of photoconductors contacting the intermediate transfer belt has changed, a control unit of a belt driving device controls the driving speed of a belt driving motor based on a period of the intermediate transfer belt determined in the rotation immediately before the contact-state-changing rotation instead of a period determined in the contact-state-changing rotation.