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1.发明公开MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPERS, PROCESS FOR PRODUCTION THEREOF, AND TWO-COMPONENT DEVELOPERS 有权磁性支持电影摄影开发商，制造方法和开发者从两个组件
公开(公告)号：EP2439593A4
公开(公告)日：2012-12-05
申请号：EP10783459
申请日：2010-06-04
申请人： TODA KOGYO CORP
CPC分类号： G03G9/1075 , G03G9/0819 , G03G9/0827 , G03G9/08755 , G03G9/0918 , G03G9/107 , G03G9/1131 , G03G9/1133 , G03G9/1134 , G03G9/1135 , G03G9/1136
摘要： The present invention relates to a magnetic carrier for an electrophotographic developer comprising spherical magnetic composite particles comprising a phenol resin as a binder and ferromagnetic iron oxide particles bonded to each other through the phenol resin, wherein the spherical magnetic composite particles have a ten-point mean roughness Rz of 0.3 to 2.0 µm. The magnetic carrier for an electrophotographic developer according to the present invention exhibits an excellent durability against peeling-off and abrasion of coating resins formed thereon and a high stability to mechanical stress exerted onto the carrier, is free from occurrence of spent toner, can be stably held over a long period of time without occurrence of fogging and unevenness in density of toner images, and can keep high-quality images with an excellent gradation for a long period of time.
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2.发明公开MAGNETIC IRON OXIDE PARTICLE POWDER, MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND TWO-COMPONENT SYSTEM DEVELOPER 有权磁性氧化铁颗粒粉末，磁性支撑，电力照相显影剂组分和双组分系统开发商
公开(公告)号：EP2692692A4
公开(公告)日：2014-10-01
申请号：EP12765876
申请日：2012-03-29
申请人： TODA KOGYO CORP
发明人： HARADA SHIGENORI , UEMOTO SHINJI , MISAWA HIROMITSU , KURITA EIICHI , AOKI KOSO
CPC分类号： G03G9/0839 , C01P2004/04 , C01P2004/45 , C01P2004/51 , C01P2004/62 , C01P2006/12 , C01P2006/42 , C01P2006/62 , C09C1/24 , G03G9/107 , G03G9/113 , G03G9/1134 , G03G9/1135 , G03G9/1136 , Y10T428/2982
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