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:
Aug. 12, 2014
Filed:
Oct. 18, 2011
Koji Hatayama, Kanagawa, JP;
Yasunobu Youda, Kanagawa, JP;
Taku Kudoh, Kanagawa, JP;
Takayuki Andoh, Kanagawa, JP;
Yohei Osanai, Kanagawa, JP;
Satoshi Narai, Kanagawa, JP;
Takashi Fujii, Kanagawa, JP;
Koji Hatayama, Kanagawa, JP;
Yasunobu Youda, Kanagawa, JP;
Taku Kudoh, Kanagawa, JP;
Takayuki Andoh, Kanagawa, JP;
Yohei Osanai, Kanagawa, JP;
Satoshi Narai, Kanagawa, JP;
Takashi Fujii, Kanagawa, JP;
Ricoh Company, Ltd., Toyko, JP;
Abstract
An automatic document feeder includes an upstream conveyance roller pair disposed upstream of an image reader including an upstream driving roller and an upstream driven roller; a downstream conveyance roller pair including a downstream driving roller and a downstream driven roller; an upstream auxiliary roller pair including upstream auxiliary rollers disposed coaxially on a shaft of the upstream driving roller and of the upstream driven roller, respectively, each formed of an elastic member and having a diameter greater than that of the adjacent upstream driving roller and of the adjacent upstream driven roller, respectively; and a downstream auxiliary roller pair including downstream auxiliary rollers each disposed coaxially on a shaft of the downstream driving roller and of the downstream driven roller, formed of a low-hardness elastic member and having a diameter greater than that of the adjacent downstream driving roller and of the adjacent downstream driven roller.