发明授权
- 专利标题: Process for producing toner for electrophotography
- 专利标题(中): 电子照相用调色剂的制造方法
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申请号: US11942351申请日: 2007-11-19
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公开(公告)号: US08114564B2公开(公告)日: 2012-02-14
- 发明人: Nobumichi Kamiyoshi , Manabu Suzuki , Yutaka Murai
- 申请人: Nobumichi Kamiyoshi , Manabu Suzuki , Yutaka Murai
- 申请人地址: JP Tokyo
- 专利权人: KAO Corporation
- 当前专利权人: KAO Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2006-328173 20061205
- 主分类号: G03G9/08
- IPC分类号: G03G9/08
摘要:
The present invention relates to a process for producing a toner for electrophotography which includes the steps of (A) forming resin-containing core particles having a volume median particle size (D50) of from 1 to 10 μm in an aqueous medium; (B) adding composite fine particles containing a polyester-containing resin and a charge control agent, or composite fine particles containing “fine particles of the charge control agent” and “fine particles of the polyester-containing resin”, to the core particles obtained in the step (A) to allow the composite fine particles to adhere onto the core particles, thereby obtaining “composite fine particle-adhering core particles”; and (C) heating the “composite fine particle-adhering core particles” obtained in the step (B), to obtain coalesced particles. There are provided a process for producing a toner for electrophotography having a small particle size and a narrow particle size distribution which is capable of allowing a charge control agent to exist on a surface of the toner; and a toner for electrophotography which is produced by the process and can exhibit excellent image-forming characteristics.
公开/授权文献
- US20080131804A1 PROCESS FOR PRODUCING TONER FOR ELECTROPHOTOGRAPHY 公开/授权日:2008-06-05
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