发明申请
US20070231722A1 Ferromagnetic material powder, carrier for electrophotographic developer, process for producing them and electrophotographic developer
审中-公开
铁磁材料粉末，用于电子照相显影剂的载体，其制备方法和电子照相显影剂
- 专利标题： Ferromagnetic material powder, carrier for electrophotographic developer, process for producing them and electrophotographic developer
- 专利标题（中）： 铁磁材料粉末，用于电子照相显影剂的载体，其制备方法和电子照相显影剂
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申请号： US11729936申请日： 2007-03-30
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公开(公告)号： US20070231722A1公开(公告)日： 2007-10-04
- 发明人: Takao Sugiura , Kanao Kayamoto
- 申请人： Takao Sugiura , Kanao Kayamoto
- 申请人地址： JP Kashiwa-shi
- 专利权人： Powdertech Co., Ltd.
- 当前专利权人： Powdertech Co., Ltd.
- 当前专利权人地址： JP Kashiwa-shi
- 优先权： JPJP2006-093674 20060330
- 主分类号： H01F1/00
- IPC分类号： H01F1/00 ; C01G49/08 ; G03G9/083
摘要：
A ferromagnetic material powder comprising a magnetic oxide which is a complex of a magnetite phase and a ferrite phase, wherein the ferromagnetic material powder has a spinel crystal structure and a magnetoplumbite crystal structure, and in the spinel crystal structure, the content of Fe3+ in site A is 35 to 50% and the content of Fe2+ in site B is 30 to 45%, a carrier for an electrophotographic developer, a process for producing them and an electrophotographic developer.
公开/授权文献
- US2095079A Radio receiver 公开/授权日：1937-10-05
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