发明授权
- 专利标题： Fixing device and image forming apparatus incorporating same
- 专利标题（中）： 固定装置和包含其的图像形成装置
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申请号： US12873628申请日： 2010-09-01
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公开(公告)号： US08391766B2公开(公告)日： 2013-03-05
- 发明人: Yoshihiro Fukuhata
- 申请人： Yoshihiro Fukuhata
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2009-201600 20090901; JP2009-219076 20090924
- 主分类号： G03G15/20
- IPC分类号： G03G15/20
摘要：
A fixing device includes a first member. The first member extends along a first longitudinal axis, and has an external surface whose thickness varies along the first longitudinal axis to define at least one first convex portion and at least one first concave portion. A thickness of the first convex portion is larger than a thickness of the first concave portion. A heating source is disposed in the first member. The heating temperature of an inner circumference side of the first convex portion is higher than the heating temperature of the inner circumference side of the first concave portion.
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