发明授权
- 专利标题: Semiconductive roller, toner transport roller and electrophotographic apparatus
- 专利标题(中): 半导电辊,调色剂输送辊和电子照相设备
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申请号: US13175001申请日: 2011-07-01
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公开(公告)号: US08744324B2公开(公告)日: 2014-06-03
- 发明人: Yoshihisa Mizumoto , Akihiko Kawatani , Takashi Marui , Kenichi Kuroda
- 申请人: Yoshihisa Mizumoto , Akihiko Kawatani , Takashi Marui , Kenichi Kuroda
- 申请人地址: JP Kobe
- 专利权人: Sumitomo Rubber Industries, Ltd.
- 当前专利权人: Sumitomo Rubber Industries, Ltd.
- 当前专利权人地址: JP Kobe
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2010-160806 20100715; JP2010-224982 20101004
- 主分类号: G03G15/08
- IPC分类号: G03G15/08
摘要:
The semiconductive roller according to the present invention includes a roller body having an outer peripheral surface made of a crosslinked substance of a semiconductive rubber composition and exhibiting Shore A hardness of not more than 60, the semiconductive rubber composition contains a base polymer made of a mixture of (1) mixed rubber N of liquid nitrile rubber and solid nitrile rubber, (2) chloroprene rubber C, and (3) epichlorohydrin rubber E in a mass ratio (C+E)/N of 10/90 to 80/20, the ratios of the chloroprene rubber and the epichlorohydrin rubber in the total quantity of the base polymer are not less than 5 mass % and not less than 5 mass % respectively, and roller resistance at an applied voltage of 5 V is not less than 104Ω and not more than 109Ω.