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.

Date of Patent:
Dec. 16, 2014

Filed:

Dec. 09, 2011
Applicants:

Shozo Sakura, Kanagawa, JP;

Satoshi Kitaoka, Kanagawa, JP;

Shinji Imoto, Tokyo, JP;

Hiroyoshi Komaba, Kanagawa, JP;

Inventors:

Shozo Sakura, Kanagawa, JP;

Satoshi Kitaoka, Kanagawa, JP;

Shinji Imoto, Tokyo, JP;

Hiroyoshi Komaba, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05C 1/02 (2006.01); B41J 2/005 (2006.01); B41J 11/00 (2006.01);
U.S. Cl.
CPC ...
B41J 2/0057 (2013.01); B05C 1/027 (2013.01); B05C 1/02 (2013.01); B41J 11/0015 (2013.01);
Abstract

An image forming apparatus includes an application device. The application device has an application roller to apply a treatment liquid onto a recording medium before an image is formed on the recording medium. The application roller has a core member serving as a rotation shaft of the application roller and an elastic surface member disposed around the core member. The core member has a plurality of convex ring portions formed along a circumferential direction of the core member around a circumferential surface of the core member and a plurality of concave ring portions formed between the plurality of convex ring portions. The convex ring portions and the concave ring portions are alternately arranged.


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