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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.:

US 9499363 B1

PDFFull Text
Date of Patent:
Nov. 22, 2016

Filed:

Dec. 31, 2014

Sheet thickness detector and image forming apparatus including same

Applicants:

Yuu Wakabayashi, Kanagawa, JP;

Ryo Takenaka, Tokyo, JP;

Masashi Satoh, Kanagawa, JP;

Shingo Nishizaki, Kanagawa, JP;

Yusuke Ozaki, Tokyo, JP;

Yuji Ikeda, Kanagawa, JP;

Hiroshi Okamura, Tokyo, JP;

Naohiro Funada, Kanagawa, JP;

Tomohide Kondoh, Kanagawa, JP;

Inventors:

Yuu Wakabayashi, Kanagawa, JP;

Ryo Takenaka, Tokyo, JP;

Masashi Satoh, Kanagawa, JP;

Shingo Nishizaki, Kanagawa, JP;

Yusuke Ozaki, Tokyo, JP;

Yuji Ikeda, Kanagawa, JP;

Hiroshi Okamura, Tokyo, JP;

Naohiro Funada, Kanagawa, JP;

Tomohide Kondoh, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:

Harness, Dickey & Pierce

Primary Examiner:

Prasad Gokhale

Int. Cl.
CPC ...
B65H 5/02 (2006.01); B65H 5/04 (2006.01); B65H 5/06 (2006.01); B65H 7/14 (2006.01); B65H 7/12 (2006.01); G03G 15/00 (2006.01); B65H 7/20 (2006.01);
U.S. Cl.
CPC ...
B65H 5/068 (2013.01); B65H 7/12 (2013.01); B65H 7/14 (2013.01); B65H 7/20 (2013.01); G03G 15/5029 (2013.01); B65H 2404/144 (2013.01); G03G 2215/00628 (2013.01); G03G 2215/00738 (2013.01);
Abstract

A sheet thickness detector incorporated in an image forming apparatus includes a sheet conveying member to rotate and convey a sheet in a sheet conveyance direction, a driven sheet conveying member to contact the sheet conveying member and form at least one first transfer nip therebetween in a lateral direction and to displace by an amount equivalent to a thickness of the sheet passing through the first transfer nip and rotated with the sheet conveying member in the sheet conveyance direction, a displacement member to contact the sheet conveying member and form a second transfer nip smaller than the first transfer nip in the lateral direction and to displace by an amount equivalent to the thickness of the sheet passing through the second transfer nip and supported at a support member, and a displacement amount detector to detect an amount of displacement of the displacement member.

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