发明名称 |
MAGNETIC-CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, PROCESS FOR PRODUCING SAME, MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND TWO-COMPONENT DEVELOPER |
摘要 |
<p>The present invention provides a magnetic carrier for an electrophotographic developer which has an excellent durability and a stable charging property and is free from occurrence of spent toner thereonto, and a two-component system developer comprising the magnetic carrier for an electrophotographic developer and a toner. The present invention relates to a core material of a magnetic carrier for an electrophotographic developer comprising spherical composite particles comprising at least ferromagnetic iron oxide fine particles and a cured phenol resin and having an average particle diameter of 1 to 100 µ m, a resin index of the spherical composite particles being within the range of 35 to 80%, and a magnetic carrier obtained by coating a surface of respective particles of the magnetic carrier core material with a resin.</p> |
申请公布号 |
EP2698673(A1) |
申请公布日期 |
2014.02.19 |
申请号 |
EP20120771219 |
申请日期 |
2012.04.12 |
申请人 |
TODA KOGYO CORPORATION |
发明人 |
KINOSHITA, KAORI;KURITA, EIICHI |
分类号 |
G03G9/107;G03G9/113 |
主分类号 |
G03G9/107 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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