Invention Grant
- Patent Title: Semiconductive roller, toner transport roller and electrophotographic apparatus
- Patent Title (中): 半导电辊,调色剂输送辊和电子照相设备
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Application No.: US13175001Application Date: 2011-07-01
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Publication No.: US08744324B2Publication Date: 2014-06-03
- Inventor: Yoshihisa Mizumoto , Akihiko Kawatani , Takashi Marui , Kenichi Kuroda
- Applicant: Yoshihisa Mizumoto , Akihiko Kawatani , Takashi Marui , Kenichi Kuroda
- Applicant Address: JP Kobe
- Assignee: Sumitomo Rubber Industries, Ltd.
- Current Assignee: Sumitomo Rubber Industries, Ltd.
- Current Assignee Address: JP Kobe
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2010-160806 20100715; JP2010-224982 20101004
- Main IPC: G03G15/08
- IPC: G03G15/08

Abstract:
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.
Public/Granted literature
- US20120014723A1 SEMICONDUCTIVE ROLLER, TONER TRANSPORT ROLLER AND ELECTROPHOTOGRAPHIC APPARATUS Public/Granted day:2012-01-19
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