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. 04, 2017
Filed:
Jan. 29, 2016
Hiroshi Yoshinaga, Chiba, JP;
Kenji Ishii, Kanagawa, JP;
Kazuhito Kishi, Kanagawa, JP;
Takashi Seto, Kanagawa, JP;
Takayuki Seki, Kanagawa, JP;
Ippei Fujimoto, Kanagawa, JP;
Kazunari Sawada, Tokyo, JP;
Susumu Matsusaka, Kanagawa, JP;
Yasuhiko Ogino, Kanagawa, JP;
Shohta Kobashigawa, Tokyo, JP;
Hiroshi Yoshinaga, Chiba, JP;
Kenji Ishii, Kanagawa, JP;
Kazuhito Kishi, Kanagawa, JP;
Takashi Seto, Kanagawa, JP;
Takayuki Seki, Kanagawa, JP;
Ippei Fujimoto, Kanagawa, JP;
Kazunari Sawada, Tokyo, JP;
Susumu Matsusaka, Kanagawa, JP;
Yasuhiko Ogino, Kanagawa, JP;
Shohta Kobashigawa, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device includes a fixing rotator and an opposed rotator pressed against the fixing rotator to form a fixing nip therebetween. A primary heater is disposed opposite the fixing rotator in a circumferential span of the fixing rotator other than the fixing nip in a circumferential direction of the fixing rotator to heat the fixing rotator. A heat shield is interposed between the primary heater and the fixing rotator and disposed outboard from at least a decreased size recording medium conveyance span of the fixing rotator spanning in an axial direction of the fixing rotator where a recording medium having a decreased size in the axial direction of the fixing rotator is conveyed. The heat shield shields the fixing rotator from the primary heater. A secondary heater is mounted on the heat shield to heat the fixing rotator.