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:
Sep. 01, 2009
Filed:
Jun. 21, 2007
Mitsuhiro Mori, Kawasaki, JP;
Koichi Sanpei, Kawasaki, JP;
Masatoshi Kimura, Kawasaki, JP;
Masao Konishi, Kawasaki, JP;
Mitsuhiro Mori, Kawasaki, JP;
Koichi Sanpei, Kawasaki, JP;
Masatoshi Kimura, Kawasaki, JP;
Masao Konishi, Kawasaki, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A heat roller having a cylindrical sheet-like heating element having a resistance member embedded in an insulating member. The sheet-like heating element is arranged between an inner tube and an outer tube. The outer tube is formed so as to be longer than the inner tube for reducing non-uniformity in heat of the heat roller. Further, a thermal expansion coefficient of a material of the outer tube is greater than that of a material of the inner tube. Moreover, a triple-tube heat roller is provided.