发明授权
US07974563B2 Image heating apparatus and pressure roller therein having metal core and two elastic layers with different thermal conductivities
有权
图像加热装置和加压辊，其中具有金属芯和具有不同热导率的两个弹性层
- 专利标题： Image heating apparatus and pressure roller therein having metal core and two elastic layers with different thermal conductivities
- 专利标题（中）： 图像加热装置和加压辊，其中具有金属芯和具有不同热导率的两个弹性层
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申请号： US12259755申请日： 2008-10-28
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公开(公告)号： US07974563B2公开(公告)日： 2011-07-05
- 发明人: Hiroaki Sakai , Norio Hashimoto , Yuko Sekihara , Kazuo Kishino , Masaaki Takahashi , Katsuhisa Matsunaka , Atsushi Iwasaki , Hiroyuki Sakakibara
- 申请人： Hiroaki Sakai , Norio Hashimoto , Yuko Sekihara , Kazuo Kishino , Masaaki Takahashi , Katsuhisa Matsunaka , Atsushi Iwasaki , Hiroyuki Sakakibara
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2007-284915 20071101
- 主分类号： G03G15/20
- IPC分类号： G03G15/20
摘要：
A pressure member contacts a heating member to form a nip part where a recording material is heated and pinched-conveyed, and includes a first elastic layer and a second elastic layer 24b having a higher thermal conductivity than that of the first elastic layer. An elastic layer is formed of a combination of the first elastic layer and the second elastic layer so that the thickness of the second elastic layer at the end portion is thicker than the thickness of the second elastic layer at the center portion in a longitudinal direction perpendicular to a recording material conveyance direction. Accordingly, when using the pressure member to contact the heating member to form the nip part, it is possible to reduce the difference between a center nip width and an end-portion nip width of the nip part.
公开/授权文献
- US20090116886A1 IMAGE HEATING APPARATUS AND PRESSURE ROLLER THEREIN 公开/授权日：2009-05-07