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. 15, 2016
Filed:
Nov. 25, 2015
Kazuya Saito, Kanagawa, JP;
Ryuuichi Mimbu, Kanagawa, JP;
Toshihiko Shimokawa, Kanagawa, JP;
Haruyuki Honda, Kanagawa, JP;
Yoshiki Yamaguchi, Kanagawa, JP;
Yasunori Ishigaya, Kanagawa, JP;
Keitaro Shoji, Kanagawa, JP;
Yutaka Ikebuchi, Kanagawa, JP;
Yoshio Hattori, Kanagawa, JP;
Kazuya Saito, Kanagawa, JP;
Ryuuichi Mimbu, Kanagawa, JP;
Toshihiko Shimokawa, Kanagawa, JP;
Haruyuki Honda, Kanagawa, JP;
Yoshiki Yamaguchi, Kanagawa, JP;
Yasunori Ishigaya, Kanagawa, JP;
Keitaro Shoji, Kanagawa, JP;
Yutaka Ikebuchi, Kanagawa, JP;
Yoshio Hattori, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device includes a nip formation pad pressing against a pressure rotator via a fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The nip formation pad includes a base and a first thermal conductor sandwiched between the base and the fixing rotator at the fixing nip and having a first thermal conductivity greater than a basic thermal conductivity of the base. A first heater and a second heater are disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. A rotatable light shield moves to a shield position where the light shield is interposed between the second heater and the fixing rotator to shield the fixing rotator from the second heater. The second heater is disposed at a location where the light shield screens the second heater more readily than the first heater.