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:
May. 27, 2014
Filed:
Aug. 18, 2011
Takamasa Hase, Kanagawa, JP;
Masanao Ehara, Kanagawa, JP;
Tadashi Ogawa, Tokyo, JP;
Takeshi Uchitani, Kanagawa, JP;
Satoshi Ueno, Tokyo, JP;
Teppei Kawata, Kanagawa, JP;
Kazuya Saito, Kanagawa, JP;
Shuutaroh Yuasa, Kanagawa, JP;
Kensuke Yamaji, Kanagawa, JP;
Takamasa Hase, Kanagawa, JP;
Masanao Ehara, Kanagawa, JP;
Tadashi Ogawa, Tokyo, JP;
Takeshi Uchitani, Kanagawa, JP;
Satoshi Ueno, Tokyo, JP;
Teppei Kawata, Kanagawa, JP;
Kazuya Saito, Kanagawa, JP;
Shuutaroh Yuasa, Kanagawa, JP;
Kensuke Yamaji, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device includes a fixing rotation body heating and fixing an unfixed image onto a recording medium; a pressing rotation body pressing the recording medium to the fixing rotation body; and a temperature detection unit detecting a temperature of the pressing rotation body. Further, when a predetermined time period elapses since a warm-up operation has started before a temperature detected by the temperature detection unit is equal to or greater than a predetermined temperature or when the temperature detected by the temperature detection unit is equal to or greater than the predetermined temperature before the predetermined time period elapses since a warm-up operation has started, the fixing device determines that the warm-up operation is finished.