发明授权
- 专利标题： Magnetic toner
- 专利标题（中）： 磁性调色剂
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申请号： US994473申请日： 1992-12-21
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公开(公告)号： US5296326A公开(公告)日： 1994-03-22
- 发明人: Masaaki Taya , Hirohide Tanikawa , Yasutaka Akashi , Makoto Unno , Masaki Uchiyama , Kiichiro Sakashita
- 申请人： Masaaki Taya , Hirohide Tanikawa , Yasutaka Akashi , Makoto Unno , Masaki Uchiyama , Kiichiro Sakashita
- 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： JPX2-078999 19900329; JPX3-070480 19910311
- 主分类号： G03G9/083
- IPC分类号： G03G9/083
摘要：
A magnetic toner for electrophotography having stable triboelectric chargeability under various environmental conditions may be provided by using magnetic iron oxide particles having a moderately high surface Feo content, specified by the following conditions: (a) a dissolved Fe (II) content in dissolved total iron of 14-33.3 wt. % at a dissolved total iron percentage of 5.+-.1 wt. %, (b) a dissolved Fe (II) content in dissolved total iron of 17-33.3 wt. % at a dissolved total iron percentage of 10.+-.1 wt. %, and (c) a dissolved Fe (II) content in dissolved total iron of 18-33.3 wt. % at a dissolved total iron percentage of 15.+-.1 wt.