发明公开
- 专利标题: Electrophotographic toner and method of manufacturing same
- 专利标题(中): 电子照相用调色剂及其制造方法
-
申请号: EP98301036.4申请日: 1998-02-12
-
公开(公告)号: EP0860746A3公开(公告)日: 1999-11-03
- 发明人: Akazawa, Yoshiaki , Murakami, Toshihiko , Imafuku, Tatuo , Ouchi, Takaki , Morinishi, Yasuharu , Ogawa, Satoshi , Nakamura, Tadashi , Nagahama, Hitoshi , Ishida, Toshihisa
- 申请人: Sharp Kabushiki Kaisha
- 申请人地址: 22-22, Nagaike-cho, Abeno-ku Osaka 545 JP
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: 22-22, Nagaike-cho, Abeno-ku Osaka 545 JP
- 代理机构: West, Alan Harry
- 优先权: JP36742/97 19970220; JP197590/97 19970723; JP235167/97 19970829
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G9/093
摘要:
An electrophotographic toner is made up of toner particles composed of irregularly-shaped core particles made chiefly of binder resin, and surface-modifying fine particles which are first dispersed over and attached to the surface of the core particles, and then affixed or formed into a film thereon. The BET specific surface area, based on N 2 adsorption, of the toner particles is less than 0.64 times the BET specific surface area of the core particles and surface-modifying fine particles combined together. Further, this value is 1.07 times the BET specific surface area of hypothetical toner particles which are perfect spheres. Consequently, the toner is not prone to problems such as filming, toner scattering, and fogging which are caused by peeling, separation, etc. of the surface-modifying fine particles, nor to poor cleaning due to spherical toner particles. Further, since the toner is manufactured with a quantitative grasp of the state of modification of the surface of the core particles by the surface-modifying fine particles, it is a toner in a stable state.
公开/授权文献
- EP0860746B1 Method of manufacturing of an electrophotographic toner 公开/授权日:2005-11-09
信息查询