发明授权
US4844349A Process for producing toner for developing electrostatic images and
apparatus therefor
失效
用于生产静电图像显影用调色剂的方法及其设备
- 专利标题： Process for producing toner for developing electrostatic images and apparatus therefor
- 专利标题（中）： 用于生产静电图像显影用调色剂的方法及其设备
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申请号： US108681申请日： 1987-10-15
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公开(公告)号： US4844349A公开(公告)日： 1989-07-04
- 发明人: Hitoshi Kanda , Masayoshi Kato
- 申请人： Hitoshi Kanda , Masayoshi Kato
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-246610 19861017
- 主分类号： B02C23/12
- IPC分类号： B02C23/12 ; B07B7/086 ; B07B9/00 ; G03G9/08 ; G03G9/087
摘要：
A toner for producing electrostatic latent images is produced by classifying a pulverized feed material into a coarse powder and a fine powder in a first classifying means, pulverizing and recycling the coarse powder to the first classifying means, introducing the fine powder into a multi-division classifying chamber divided into at least three sections where the fine powder is classified into at least a coarse powder fraction, a medium powder fraction and a fine powder fraction. The medium powder fraction is recovered to provide a toner. The coarse powder fraction is recycled to the first classifying means.
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