Invention Grant
- Patent Title: Fixing device and image forming apparatus in which a height difference is circumferentially provided to a pressing member
- Patent Title (中): 固定装置和图像形成装置，其中高度差周向地设置到按压构件
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Application No.: US13110155Application Date: 2011-05-18
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Publication No.: US08606162B2Publication Date: 2013-12-10
- Inventor: Takahiro Yoshikawa
- Applicant: Takahiro Yoshikawa
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-122241 20100528; JP2010-238533 20101025
- Main IPC: G03G15/20
- IPC: G03G15/20
Abstract:
A fixing device including a fixing member to fix a toner image on a sheet by application of heat and pressure and a pressing member to press the sheet against the fixing member. The pressing member is rotatable. A height difference is circumferentially provided to the pressing member, and is tapered from an end portion toward a portion contacting an edge of a small-size sheet. The pressing member has a greater hardness than the fixing member.
Public/Granted literature
- US20110293339A1 FIXING DEVICE AND IMAGE FORMING APPARATUS Public/Granted day:2011-12-01
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