发明授权
US06001525A Electrophotographic developer carrier, two-component type developer and
image forming method
失效
电子照相显影剂载体,双组分型显影剂和成像方法
- 专利标题: Electrophotographic developer carrier, two-component type developer and image forming method
- 专利标题(中): 电子照相显影剂载体,双组分型显影剂和成像方法
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申请号: US974728申请日: 1997-11-19
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公开(公告)号: US06001525A公开(公告)日: 1999-12-14
- 发明人: Tetsuya Ida , Masaaki Taya , Makoto Kanbayashi
- 申请人: Tetsuya Ida , Masaaki Taya , Makoto Kanbayashi
- 申请人地址: JPX Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX8-307712 19961119; JPX9-045751 19970228
- 主分类号: G03G9/113
- IPC分类号: G03G9/113
摘要:
An electrophotographic two-component type developer includes a toner and a magnetic carrier showing stable charge-imparting performances for a long period of continuous image formation and wherein various environmental conditions. The magnetic carrier comprises: magnetic carrier core particles and a silicone resin coating the magnetic carrier core particles; wherein the silicone resin is characterized by having (i) both (a) a --COO-- group and (b) a phenyl group or nitrogen-containing group, (ii) a carbon content attributable to the --COO-- group of 10-70 atomic % of silicon constituting the silicone resin, based on ESCA, and (iii) a carbon content attributable to the phenyl group of 0.1-300 atomic % or a nitrogen content attributable to the nitrogen-containing group of 0.01-10 atomic %, respectively, of the carbon content attributable to the --COO-- group, based on ESCA.