| 发明名称 |
CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPING AGENT, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPING AGENT, AND ELECTROPHOTOGRAPHIC DEVELOPING AGENT |
| 摘要 |
A carrier core particle for an electrophotographic developer includes a core composition expressed by a general formula: Mn x Fe 3-x O 4+y (0<x‰¤1, 0<y) as a main ingredient, 0.1 wt% or more of Si, and 0.03 wt% or more of at least one metal element selected from the group consisting of Ca, Sr and Mg. |
| 申请公布号 |
EP2555056(A4) |
申请公布日期 |
2015.05.20 |
| 申请号 |
EP20110765547 |
申请日期 |
2011.03.29 |
| 申请人 |
DOWA ELECTRONICS MATERIALS CO., LTD.;DOWA IP CREATION CO., LTD. |
发明人 |
KAWAUCHI, TAKESHI;OGAWA, SHO |
| 分类号 |
G03G9/107;G03G9/10;G03G9/113 |
主分类号 |
G03G9/107 |
| 代理机构 |
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