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. 02, 2017
Filed:
Mar. 08, 2016
Kenji Ishii, Kanagawa, JP;
Susumu Matsusaka, Kanagawa, JP;
Yasuhiko Ogino, Kanagawa, JP;
Shohta Kobashigawa, Tokyo, JP;
Kazuhito Kishi, Kanagawa, JP;
Takashi Seto, Kanagawa, JP;
Ippei Fujimoto, Kanagawa, JP;
Kazunari Sawada, Tokyo, JP;
Hiroshi Yoshinaga, Chiba, JP;
Hiromasa Takagi, Tokyo, JP;
Takamasa Hase, Tokyo, JP;
Kenji Ishii, Kanagawa, JP;
Susumu Matsusaka, Kanagawa, JP;
Yasuhiko Ogino, Kanagawa, JP;
Shohta Kobashigawa, Tokyo, JP;
Kazuhito Kishi, Kanagawa, JP;
Takashi Seto, Kanagawa, JP;
Ippei Fujimoto, Kanagawa, JP;
Kazunari Sawada, Tokyo, JP;
Hiroshi Yoshinaga, Chiba, JP;
Hiromasa Takagi, Tokyo, JP;
Takamasa Hase, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device includes a nip formation pad to press against a fixing rotator. A primary heater is disposed opposite the fixing rotator in a primary heating span spanning in an axial direction of the fixing rotator to heat the primary heating span of the fixing rotator from which heat is conducted to the nip formation pad with a primary conduction. A secondary heater is disposed opposite the fixing rotator in a secondary heating span that is outboard from the primary heating span in the axial direction of the fixing rotator. The secondary heater is interposed between a first nip formation portion and a second nip formation portion of the nip formation pad to heat the secondary heating span of the fixing rotator through the nip formation pad from which heat is conducted to the fixing rotator with a secondary conduction greater than the primary conduction.