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. 11, 2015
Filed:
Jul. 26, 2013
Fuji Xerox Co., Ltd., Tokyo, JP;
Satoshi Nakamura, Kanagawa, JP;
Shogo Kamiya, Kanagawa, JP;
Junpei Amano, Kanagawa, JP;
Norimasa Fujiwara, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
A fixing device includes a belt, a secured member, a support roller, a heating unit, and a pressure roller that is driven to rotate and has an elastic surface layer deformed when pressing the belt against the secured member so as to form a fixing portion. A recording medium that holds an unfixed image passes through the fixing portion. The secured member has a contact portion and an insertion portion having first and second curved surfaces respectively curved toward first and second sides opposite to each other. Conditions t(1/r+1/r)≦0.130 and r<rare satisfied where t denotes a thickness of the belt, rdenotes a radius of curvature of the second curved surface in mm, and rdenotes a radius of curvature of the first curved surface in mm.