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:
Apr. 23, 2013
Filed:
Jun. 19, 2009
Hiromichi Matsuda, Kanagawa, JP;
Takuro Kamiya, Kanagawa, JP;
Michihito Ohashi, Kanagawa, JP;
Yuichi Hirose, Kanagawa, JP;
Noritaka Masuda, Ibaraki, JP;
Satoru Tao, Ibaraki, JP;
Hiroki Tsubouchi, Ibaraki, JP;
Hiromichi Matsuda, Kanagawa, JP;
Takuro Kamiya, Kanagawa, JP;
Michihito Ohashi, Kanagawa, JP;
Yuichi Hirose, Kanagawa, JP;
Noritaka Masuda, Ibaraki, JP;
Satoru Tao, Ibaraki, JP;
Hiroki Tsubouchi, Ibaraki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus is disclosed that includes an image carrier, a driving source, a rotation detection unit, and a control unit that performs fluctuation pattern recognition processing, control pattern construction processing, speed fine-adjustment processing, and remaining pattern recognition processing. The control unit is configured to perform control pattern correction processing for setting a frequency band of a remaining speed fluctuation to be detected by the remaining pattern recognition processing narrower than a frequency band of a speed fluctuation to be detected by the fluctuation pattern recognition processing and correcting the speed control pattern so as to be a pattern capable of reducing even the remaining speed fluctuation based on a remaining speed fluctuation pattern recognized by the remaining pattern recognition processing.