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.: US14467135Application Date: 2014-08-25
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Publication No.: US09329545B2Publication Date: 2016-05-03
- Inventor: Keitaro Shoji
- Applicant: Keitaro Shoji
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P
- Priority: JP2013-174336 20130826; JP2014-144093 20140714
- Main IPC: G03G15/20
- IPC: G03G15/20

Abstract:
A fixing device includes a fixing rotator and an opposed rotator disposed opposite the fixing rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater disposed opposite the fixing rotator heats the fixing rotator. A nip formation pad disposed opposite an inner circumferential surface of the fixing rotator includes a decreased thermal conduction portion having a decreased thermal conductivity to conduct heat in a thickness direction of the nip formation pad perpendicular to an axial direction of the fixing rotator and an increased thermal conduction portion having an increased thermal conductivity to conduct heat in the thickness direction of the nip formation pad. The increased thermal conduction portion is disposed opposite an overheating span of the fixing rotator in the axial direction thereof where the fixing rotator is susceptible to overheating.
Public/Granted literature
- US20150055993A1 FIXING DEVICE AND IMAGE FORMING APPARATUS Public/Granted day:2015-02-26
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