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. 20, 2009
Filed:
May. 25, 2006
Yoshihiro Sakai, Tokyo, JP;
Yoshihiro Sakai, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A belt driving apparatus is disclosed, that uses feedback signals for executing feedback control of a motor that drives the rotation of a belt. The belt driving apparatus includes a first sensor for detecting an index of a scale formed along a peripheral direction of the belt, a second sensor for detecting a detection target cooperatively moving with the rotation of the belt, and a sensor switching part for selectively switching the feedback signals used for executing the feedback control of the motor. The feedback signals include first signals output from the first sensor and second signals output from the second sensor. The sensor switching part selects the first or second signals accordingly.