发明授权
US5111998A Process for producing toner for developing electrostatic image and
apparatus system therefor
失效
用于生产用于发展静电图像的调色剂及其装置系统的方法
- 专利标题: Process for producing toner for developing electrostatic image and apparatus system therefor
- 专利标题(中): 用于生产用于发展静电图像的调色剂及其装置系统的方法
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申请号: US676067申请日: 1991-03-27
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公开(公告)号: US5111998A公开(公告)日: 1992-05-12
- 发明人: Hitoshi Kanda , Yusuke Yamada , Masayoshi Kato , Yasuhide Goseki , Satoshi Mitsumura
- 申请人: Hitoshi Kanda , Yusuke Yamada , Masayoshi Kato , Yasuhide Goseki , Satoshi Mitsumura
- 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: JPX2-80699 19900330
- 主分类号: G03G9/087
- IPC分类号: G03G9/087 ; B07B7/086 ; B07B9/02 ; G03G9/08
摘要:
A toner for developing an electrostatic latent image is produced by classifying a pulverized feed material in a first classifying means into coarse powder and fine powder; pulverizing the coarse powder and feeding back the pulverized product to the first classifying means; introducing the fine powder to a second classifying means having a multi-division classification zone divided into at least three sections, where it is classified into a coarse powder portion, a median powder portion, and a fine powder portion; and feeding back the coarse powder to said pulverizing means or first classifying means. The median powder has a volume average particle diameter of from 4 .mu.m to 10 .mu.m and a coefficient of variation of number distribution, represented by A, satisfying the following condition: 20.ltoreq.A.ltoreq.45, and the weights B, C, F, G and M are controlled to satisfy the expressions: 0.3 .ltoreq.weight B/weight C.ltoreq.0.8, 0.2.ltoreq.weight G/weight C.ltoreq.0.7 and 0.8.ltoreq.weight B/(weight F+weight M).ltoreq.1.2.
公开/授权文献
- US5728662A Gel hand cleaner 公开/授权日:1998-03-17
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