Invention Grant
- Patent Title: Fixing device, image forming apparatus, and fixing method
- Patent Title (中): 固定装置,成像装置和固定方法
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Application No.: US14175570Application Date: 2014-02-07
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Publication No.: US09383693B2Publication Date: 2016-07-05
- Inventor: Shuutaroh Yuasa , Shuntaro Tamaki , Takayuki Seki , Hiroshi Yoshinaga , Yuji Arai , Ryuuichi Mimbu , Yoshiki Yamaguchi , Toshihiko Shimokawa , Yutaka Ikebuchi , Kazuya Saito
- Applicant: Shuutaroh Yuasa , Shuntaro Tamaki , Takayuki Seki , Hiroshi Yoshinaga , Yuji Arai , Ryuuichi Mimbu , Yoshiki Yamaguchi , Toshihiko Shimokawa , Yutaka Ikebuchi , Kazuya Saito
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Duft Bornsen & Fettig LLP
- Priority: JP2013-053781 20130315
- Main IPC: G03G15/20
- IPC: G03G15/20

Abstract:
A fixing device includes a fixing rotary body and a heater for heating the fixing rotary body. An opposed body contacts the fixing rotary body with releasable pressure therebetween to form a fixing nip therebetween through which a recording medium is conveyed. A heat shield is interposed between the heater and the fixing rotary body and movable in a circumferential direction of the fixing rotary body to shield the fixing rotary body from the heater in a variable circumferential direct heating span of the fixing rotary body where the heater is disposed opposite the fixing rotary body directly. A controller is operatively connected to the heater and the heat shield to move the heat shield after the controller turns on the heater as a print job starts so as to change an area of the direct heating span of the fixing rotary body.
Public/Granted literature
- US20140270833A1 FIXING DEVICE, IMAGE FORMING APPARATUS, AND FIXING METHOD Public/Granted day:2014-09-18
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