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:
Mar. 17, 2015
Filed:
Jan. 22, 2014
Shota Kobashigawa, Kanagawa, JP;
Susumu Matsusaka, Kanagawa, JP;
Miwa Shuto, Kanagawa, JP;
Masanobu Yamagata, Kanagawa, JP;
Motokazu Hasegawa, Kanagawa, JP;
Yukari Isoe, Kanagawa, JP;
Shota Kobashigawa, Kanagawa, JP;
Susumu Matsusaka, Kanagawa, JP;
Miwa Shuto, Kanagawa, JP;
Masanobu Yamagata, Kanagawa, JP;
Motokazu Hasegawa, Kanagawa, JP;
Yukari Isoe, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device that includes a rotary fixing member; a pressure roller configured to press against the fixing member to form a nip with the fixing member; and an induction heating unit as a heat source to heat the fixing member. The induction heating unit includes an excitation coil; a coil retainer to hold the excitation coil; and a cover member disposed opposite the coil retainer in an opposite side of the rotary fixing member, in which the cover member protrudes toward a central predetermined range of the excitation coil in an axial direction of the rotary fixing member to effectively cool the fixing device. The induction heating unit further includes a rectifying member to effectively cool the fixing device.