发明公开
EP0973070A1 Magnetic particles and magnetic carrier for electrophotographic developer
有权
Magnetische Teilchen und magnetischerTrägerfürelektrophotographische Entwickler
- 专利标题： Magnetic particles and magnetic carrier for electrophotographic developer
- 专利标题（中）： Magnetische Teilchen und magnetischerTrägerfürelektrophotographische Entwickler
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申请号： EP99305576.3申请日： 1999-07-14
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公开(公告)号： EP0973070A1公开(公告)日： 2000-01-19
- 发明人: Hakata, Toshiyuki
- 申请人： TODA KOGYO CORP.
- 申请人地址： 7-1 Yokogawa-Shinmachi Nishi-ku Hiroshima-shi Hiroshima-ken JP
- 专利权人： TODA KOGYO CORP.
- 当前专利权人： TODA KOGYO CORP.
- 当前专利权人地址： 7-1 Yokogawa-Shinmachi Nishi-ku Hiroshima-shi Hiroshima-ken JP
- 代理机构： Woods, Geoffrey Corlett
- 优先权： JP20319298 19980717
- 主分类号： G03G9/113
- IPC分类号： G03G9/113 ; H01F1/36
摘要：
Magnetic particles which have an average particle size of from 10 to 200 µm and which comprise:
magnetic core particles; and
a coating layer on the surface of said magnetic core particles, which coat comprises at least one silane-based coupling agent,a silicone resin and at least one metal alkoxide represented by the general formula (I) :
(RO) n M (I)
wherein R is a C 1 to C 16 alkyl group; M is Al, Ti, Na,
K, Ca, Zn or Fe; and n is an integer of from 1 to 4.
magnetic core particles; and
a coating layer on the surface of said magnetic core particles, which coat comprises at least one silane-based coupling agent,a silicone resin and at least one metal alkoxide represented by the general formula (I) :
(RO) n M (I)
wherein R is a C 1 to C 16 alkyl group; M is Al, Ti, Na,
K, Ca, Zn or Fe; and n is an integer of from 1 to 4.
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