Invention Grant
- Patent Title: Copolymer, resin for electrophotographic functional component parts, developing roller, and electrophotographic apparatus
- Patent Title (中): 共聚物，用于电子照相功能组分的树脂，显影辊和电子照相设备
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Application No.: US12200702Application Date: 2008-08-28
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Publication No.: US08088876B2Publication Date: 2012-01-03
- Inventor: Tatsurou Yoshida , Eri Yagi
- Applicant: Tatsurou Yoshida , Eri Yagi
- Applicant Address: JP Tsukuba-shi
- Assignee: Canon Kasei Kabushiki Kaisha
- Current Assignee: Canon Kasei Kabushiki Kaisha
- Current Assignee Address: JP Tsukuba-shi
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-226241 20070831; JP2007-226250 20070831
- Main IPC: C08F220/10
- IPC: C08F220/10
Abstract:
A copolymer obtained by copolymerizing at least one monomer selected from specific acrylate or methacrylate monomers, at least one monomer selected from specific amino group-containing monomers and at least one monomer selected from specific polar group-containing monomers. A resin for electrophotographic functional component parts, which contains this copolymer, a developing roller in which a cover layer serving as a surface layer contains the copolymer as a positive charge control resin, and an electrophotographic apparatus that includes the developing roller.
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