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. 09, 2008
Filed:
Oct. 05, 2004
Masahiro Samei, Osaka, JP;
Noboru Katakabe, Kyoto, JP;
Masaru Imai, Osaka, JP;
Hideaki Yamada, Tochigi, JP;
Masahiro Samei, Osaka, JP;
Noboru Katakabe, Kyoto, JP;
Masaru Imai, Osaka, JP;
Hideaki Yamada, Tochigi, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A fixing apparatus that enables the calorific value of a heat-producing rotating element to be stabilized and the heat production efficiency of that heat-producing rotating element to be improved. A fixing apparatus () is equipped with a heat-producing sleeve (), an induction heating apparatus (), a magnetic field absorption member () that absorbs a magnetic field generated by the induction heating apparatus (), and a fixing roller () and pressure roller () that grip and rotate the heat-producing sleeve (). The magnetic field absorption member () is located in an area opposite an exciting coil () with the heat-producing sleeve () between, and absorbs a magnetic field generated by the induction heating apparatus (). The heat-producing sleeve () is composed of a nonmagnetic metallic material of thickness in the range from 10 μm to 500 μm and specific resistance of 80×10Ωcm or less.