Invention Grant
- Patent Title: Charging member, charging device including the charging member, process cartridge including the charging device and image forming apparatus including the process cartridge
- Patent Title (中): 充电构件,包括充电构件的充电装置,包括充电装置的处理盒和包括处理盒的成像装置
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Application No.: US12709874Application Date: 2010-02-22
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Publication No.: US08385780B2Publication Date: 2013-02-26
- Inventor: Makoto Nakamura , Yutaka Narita , Tadayuki Oshima , Hiroki Furubayashi , Taisuke Tokuwakt
- Applicant: Makoto Nakamura , Yutaka Narita , Tadayuki Oshima , Hiroki Furubayashi , Taisuke Tokuwakt
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2009-040863 20090224
- Main IPC: G03G15/02
- IPC: G03G15/02

Abstract:
A charging member, includes: an electrically-conductive support; an electrical resistance adjustment layer having ion conductivity provided on the electrically-conductive support; an intermediate layer having ion conductivity provided on the electrical resistance adjustment layer; and a surface layer having insulation provided on the intermediate layer, wherein the intermediate layer is formed of a resin composition containing at least a polyether polyol resin, and the surface layer is formed of a resin composition containing at least one of a fluorine-based resin, a silicone-based resin, a polyamide resin, a polyester resin, and a urethane resin.
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