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:
Apr. 19, 2016
Filed:
Mar. 11, 2014
Motoyoshi Yamano, Tokyo, JP;
Tetsuo Tokuda, Kanagawa, JP;
Takashi Sakamaki, Kanagawa, JP;
Naoto Suzuki, Kanagawa, JP;
Satoshi Ueno, Tokyo, JP;
Kohichi Utsunomiya, Kanagawa, JP;
Fumihiro Hirose, Kanagawa, JP;
Motoyoshi Yamano, Tokyo, JP;
Tetsuo Tokuda, Kanagawa, JP;
Takashi Sakamaki, Kanagawa, JP;
Naoto Suzuki, Kanagawa, JP;
Satoshi Ueno, Tokyo, JP;
Kohichi Utsunomiya, Kanagawa, JP;
Fumihiro Hirose, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device includes an exciting coil to generate a magnetic flux and a heat generation layer disposed opposite the exciting coil to generate heat by the magnetic flux from the exciting coil. A temperature sensitive magnetic body, disposed opposite the exciting coil via the heat generation layer, obtains and loses magnetism at a temperature defined by a Curie temperature by composition adjustment to selectively create a heating region and a non-heating region of the heat generation layer. A degausser is made of a non-magnetic material having an electrical resistivity smaller than an electrical resistivity of the temperature sensitive magnetic body. The degausser is disposed opposite the exciting coil with an interval in a range of from about 4.2 mm to about 8.2 mm.