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:
Jul. 12, 2016

Filed:

Aug. 19, 2015
Applicants:

Fumihiro Hirose, Kanagawa, JP;

Masami Okamoto, Kanagawa, JP;

Kenji Nozawa, Kanagawa, JP;

Yuuki Kikushima, Kanagawa, JP;

Kensuke Yamaji, Kanagawa, JP;

Keisuke Kubota, Kanagawa, JP;

Shuutaroh Yuasa, Kanagawa, JP;

Kaori Hemmi, Kanagawa, JP;

Inventors:

Fumihiro Hirose, Kanagawa, JP;

Masami Okamoto, Kanagawa, JP;

Kenji Nozawa, Kanagawa, JP;

Yuuki Kikushima, Kanagawa, JP;

Kensuke Yamaji, Kanagawa, JP;

Keisuke Kubota, Kanagawa, JP;

Shuutaroh Yuasa, Kanagawa, JP;

Kaori Hemmi, Kanagawa, JP;

Assignee:

RICOH COMPANY, LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/20 (2006.01);
U.S. Cl.
CPC ...
G03G 15/2085 (2013.01);
Abstract

A fixing device includes a guide disposed downstream from a fixing nip formed between a fixing rotator and a pressure rotator, through which a recording medium is conveyed. A pressure rotator side separator, disposed downstream from the fixing nip in a recording medium conveyance direction, includes an opposed tip disposed opposite an outer circumferential surface of the pressure rotator and a separation-conveyance face that separates the recording medium from the pressure rotator. The opposed tip and the separation-conveyance face define a hypothetical circle having a curvature not smaller than 1/20 that intersects a guide face of the guide at an intersection at which a hypothetical tangent is tangent to the hypothetical circle. The hypothetical tangent and the guide face define a downstream intersection angle that is downstream from the hypothetical tangent in the recording medium conveyance direction and is greater than 90 degrees.


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