发明申请
- 专利标题： FERRITE PARTICLES AND ELECTROPHOTOGRAPHIC CARRIER AND ELECTROPHOTOGRAPHIC DEVELOPER USING SAME
- 专利标题（中）： 铁氰化物颗粒和电子显影载体和电子显微照相
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申请号： US14005715申请日： 2012-03-19
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公开(公告)号： US20140017606A1公开(公告)日： 2014-01-16
- 发明人: Tomoya Yamada , Tomohide Iida
- 申请人： Tomoya Yamada , Tomohide Iida
- 申请人地址： JP Okayama JP Tokyo
- 专利权人： DOWA IP CREATION CO., LTD,DOWA ELECTRONICS MATERIALS CO., LTD.
- 当前专利权人： DOWA IP CREATION CO., LTD,DOWA ELECTRONICS MATERIALS CO., LTD.
- 当前专利权人地址： JP Okayama JP Tokyo
- 优先权： JP2011-066647 20110324
- 国际申请： PCT/JP2012/056955 WO 20120319
- 主分类号： G03G9/107
- IPC分类号： G03G9/107
摘要：
A material expressed as a composition formula MXFe3-XO4 (where M is at least one of Mg and Mn, and 0≦X≦1) is a main component, and as a total amount, 0.1 to 2.5 weight percent of at least one of a Sr element and a Ca element is contained. Here, when ferrite particles are used as a carrier, in terms of obtaining a higher image density, the fluidity of the ferrite particles magnetized under a magnetic field of 1000/(4π) kA/m (1000 oersteds) is preferably 40 seconds or more. The residual magnetization σr is preferably 3 Am2/kg or more.
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