发明授权
- 专利标题: Magnetic toner
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申请号: US10202903申请日: 2002-07-26
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公开(公告)号: US06653035B2公开(公告)日: 2003-11-25
- 发明人: Keiji Komoto , Tatsuya Nakamura , Tatsuhiko Chiba , Michihisa Magome , Akira Hashimoto , Takeshi Kaburagi , Eriko Yanase
- 申请人: Keiji Komoto , Tatsuya Nakamura , Tatsuhiko Chiba , Michihisa Magome , Akira Hashimoto , Takeshi Kaburagi , Eriko Yanase
- 优先权: JP2001-229674 20010730
- 主分类号: G03G9083
- IPC分类号: G03G9083
摘要:
A magnetic toner exhibiting stable performances under various environmental conditions is formed of toner particles each comprising at least a binder resin and iron oxide dispersed therein. Relative to the dry specific gravity (A) of the magnetic toner, the magnetic toner is characterized by a specific gravity distribution of toner particle fractions obtainable through wet sedimentation and including: at most 15 wt. % of a fraction having a specific gravity of above (A)×1.000 and at most (A)×1.025, 0.1-20 wt. % of a fraction having a specific gravity of above (A)×0.975 and at most (A)×1.000, at least 30 wt. % of a fraction having a specific gravity of above (A)×0.950 and at most (A)×0.975, 0.1-20 wt. % of a fraction having a specific gravity of above (A)×0.925 and at most (A)×0.950, and at most 15 wt. % of a fraction having a specific gravity of above (A)×0.900 and at most (A)×0.925.
公开/授权文献
- US20030064309A1 Magnetic toner 公开/授权日:2003-04-03