Invention Grant
- Patent Title: Fixing device and image forming apparatus
- Patent Title (中): 固定装置和成像装置
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Application No.: US14696906Application Date: 2015-04-27
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Publication No.: US09535378B2Publication Date: 2017-01-03
- Inventor: Takashi Sakamaki , Yohhei Watanabe , Naoto Suzuki , Masateru Ujiie
- Applicant: Takashi Sakamaki , Yohhei Watanabe , Naoto Suzuki , Masateru Ujiie
- Applicant Address: JP Tokyo
- Assignee: RICOH COMPANY, LTD.
- Current Assignee: RICOH COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2014-098168 20140509; JP2014-207132 20141008; JP2014-222801 20141031
- Main IPC: G03G15/20
- IPC: G03G15/20

Abstract:
A fixing device includes a first rotator rotatable in a given direction of rotation and a second rotator contacting the first rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater is disposed opposite and heats at least one of the first rotator and the second rotator. An abutment separably contacts the first rotator to refresh an outer circumferential surface of the first rotator. A mover is connected to the abutment to move the abutment with respect to the first rotator. A degradation estimator is operatively connected to the mover to estimate a degradation level of the outer circumferential surface of the first rotator and control the mover to move the abutment with respect to the first rotator according to the degradation level of the first rotator.
Public/Granted literature
- US20150323892A1 FIXING DEVICE AND IMAGE FORMING APPARATUS Public/Granted day:2015-11-12
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