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:
Nov. 19, 2013
Filed:
Mar. 10, 2011
Tadashi Ogawa, Tokyo, JP;
Masanao Ehara, Kanagawa, JP;
Satoshi Ueno, Tokyo, JP;
Hiroshi Seo, Kanagawa, JP;
Takamasa Hase, Kanagawa, JP;
Shuutaroh Yuasa, Kanagawa, JP;
Tadashi Ogawa, Tokyo, JP;
Masanao Ehara, Kanagawa, JP;
Satoshi Ueno, Tokyo, JP;
Hiroshi Seo, Kanagawa, JP;
Takamasa Hase, Kanagawa, JP;
Shuutaroh Yuasa, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A fixing device includes a fixing member, an induction heating unit, a pressing member, and a damage detection unit. The fixing member heats a toner image on a recording medium to fix the toner image onto the recording medium. The induction heating unit heats the fixing member by electromagnetic induction. The pressing member presses the fixing member to form a fixing nip portion. The fixing member includes a heat insulating elastic layer and a sleeve layer. The sleeve layer is located outside the heat insulating elastic layer and is provided with an outer conductive layer that generates heat from a magnetic flux generated by the induction heating unit. The damage detection unit is connected to the outer, conductive layer.