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. 28, 2012
Filed:
May. 28, 2008
Hidetaka Noguchi, Kanagawa, JP;
Toshiyuki Andoh, Kanagawa, JP;
Takashi Hodoshima, Kanagawa, JP;
Tatsuhiko Oikawa, Kanagawa, JP;
Seiji Hoshino, Kanagawa, JP;
Hiromichi Matsuda, Kanagawa, JP;
Makoto Komatsu, Kanagawa, JP;
Takashi Hashimoto, Kanagawa, JP;
Hidetaka Noguchi, Kanagawa, JP;
Toshiyuki Andoh, Kanagawa, JP;
Takashi Hodoshima, Kanagawa, JP;
Tatsuhiko Oikawa, Kanagawa, JP;
Seiji Hoshino, Kanagawa, JP;
Hiromichi Matsuda, Kanagawa, JP;
Makoto Komatsu, Kanagawa, JP;
Takashi Hashimoto, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fluctuation detecting unit detects a fluctuation of an endless belt generated when a sheet is brought into contact with a predetermined position of the endless belt at an upstream side in a conveying direction from a nip portion based on fluctuation information acquired by a fluctuation information acquiring unit. An entry timing estimating unit estimates entry timing of the sheet into the nip portion based on a detection of the fluctuation. A correction control unit corrects a speed fluctuation of the endless belt generated when the sheet enters the nip portion by performing a feedforward control of a first driving unit based on the entry timing.