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:
Dec. 20, 2011
Filed:
Sep. 16, 2009
Noritaka Masuda, Ibaraki, JP;
Hiromichi Matsuda, Kanagawa, JP;
Keisuke Saka, Ibaraki, JP;
Ricoh Company Ltd., Tokyo, JP;
Abstract
A belt driving control device that includes a belt, a driving roller transmitting drive force to the belt, a belt phase detecting section detecting a phase of the belt, a correction amount computing section computing a correction amount of a belt travelling velocity corresponding to the detected phase of the belt for cancelling out fluctuation in the belt travelling velocity corresponding to the detected phase of the belt, and a storage section storing the correction amount of the belt travelling velocity corresponding to the detected phase of the belt. The belt driving control device further includes a driving control section retrieving the correction amount of the belt travelling velocity corresponding to the phase of the belt and controlling drive of the driving roller to cancel out the fluctuation in the belt travelling velocity based on the retrieved correction amount of the belt travelling velocity corresponding to the detected phase of the belt.