Invention Grant
- Patent Title: Charging member, process cartridge, and electrophotographic apparatus
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Application No.: US12279972Application Date: 2007-02-23
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Publication No.: US08277947B2Publication Date: 2012-10-02
- Inventor: Hiroshi Mayuzumi , Noriaki Kuroda
- Applicant: Hiroshi Mayuzumi , Noriaki Kuroda
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2006-052849 20060228
- International Application: PCT/JP2007/053983 WO 20070223
- International Announcement: WO2007/100069 WO 20070907
- Main IPC: B32B9/04
- IPC: B32B9/04

Abstract:
A charging member is provided having a support, a conductive elastic layer formed on the support and a surface layer formed on the conductive elastic layer. The surface layer contains a polysiloxane having at least one of structures represented by the following formulas (1a1), (1a2), (1b1) and (1b2): Toners and external additives used in the toners clinging to the charging member surface can be minimized even through repeated use over a long period of time, thus the charging member can perform stable charging and image reproduction even when used in the DC contact charging method.
Public/Granted literature
- US20100226684A1 CHARGING MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS Public/Granted day:2010-09-09
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