发明名称 |
METHOD FOR PRODUCING CARRIER CORE FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER CORE FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER FOR ELECTROPHOTOGRAPHIC CARRIER, AND ELECTROPHOTOGRAPHIC DEVELOPER |
摘要 |
<p>A method for manufacturing carrier core particles for electrophotographic developer including a slurrying step (A) of making an iron-containing raw material and a strontium-containing raw material into slurry, a granulation step (B) of granulating the slurry mixture obtained in the slurrying step, and a firing step (C) of firing a powdery material, which is obtained by granulating the slurry mixture in the granulation step, at a predetermined temperature to form a magnetic phase. The slurrying step makes the iron-containing raw material into the slurry containing the iron-containing raw material having a volume diameter D 50 of 1.0 to 4.0 µm and a volume diameter D 90 of 2.5 to 7.0 µm, and makes the strontium-containing raw material into the slurry so that the carrier core particles for electrophotographic developer contain 0<y‰¤5000 ppm, where y denotes the content of the strontium in the carrier core particles.</p> |
申请公布号 |
KR20130085033(A) |
申请公布日期 |
2013.07.26 |
申请号 |
KR20137008139 |
申请日期 |
2012.03.02 |
申请人 |
DOWA ELECTRONICS MATERIALS CO., LTD.;DOWA IP CREATION CO., LTD. |
发明人 |
KAWAUCHI TAKESHI;IIDA TOMOHIDE |
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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