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:
Feb. 08, 2011
Filed:
Mar. 13, 2009
Hiromichi Matsuda, Kanagawa, JP;
Toshiyuki Andoh, Kanagawa, JP;
Yasuhisa Ehara, Kanagawa, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Noriaki Funamoto, Tokyo, JP;
Seiichi Handa, Tokyo, JP;
Hiromichi Matsuda, Kanagawa, JP;
Toshiyuki Andoh, Kanagawa, JP;
Yasuhisa Ehara, Kanagawa, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Noriaki Funamoto, Tokyo, JP;
Seiichi Handa, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a control unit to control a latent image support with a target rate; a first unit to detect patterns; plural parts to be detected revolving with the support; a second unit to detect passing of the part; a first generating unit to obtain an amplitude and a phase of fluctuation and a pattern for canceling out the fluctuation from the amplitude and the phase; a second generating unit to perform a process to obtain an amplitude and a phase of fluctuation while the support rotates once or more, perform the process again, calculate a change in the amplitude and phase, and generate another pattern for canceling out the change; and a correcting unit to correct the target rate by superimposing the patterns with the target rate.