发明授权
US5912099A Magenta toner, process for producing same and color image forming method
using same
失效
洋红色调色剂,其制造方法和使用其的彩色图像形成方法
- 专利标题: Magenta toner, process for producing same and color image forming method using same
- 专利标题(中): 洋红色调色剂,其制造方法和使用其的彩色图像形成方法
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申请号: US904476申请日: 1997-08-04
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公开(公告)号: US5912099A公开(公告)日: 1999-06-15
- 发明人: Makoto Kanbayashi , Masaaki Taya , Ryoichi Fujita , Wakashi Iida , Tetsuya Ida
- 申请人: Makoto Kanbayashi , Masaaki Taya , Ryoichi Fujita , Wakashi Iida , Tetsuya Ida
- 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: JPX8-219077 19970802
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G9/09
摘要:
A magenta toner for developing electrostatic images is formed of a binder resin, and a quinacridone pigment providing an X-ray diffraction spectrum showing two peaks in a Bragg angle (2.theta.) region of 5-10 deg. The magenta toner has an improved light fastness, may have a desired hue comparable to a printing process ink and is suitably used for electrophotographic full-color image formation. The magenta toner may preferably be formed through a process including a first kneading step starting from wet blending of a binder resin and two paste pigments including quinacridone and 2,9-dimethylquinacridone, respectively, under mild conditions not causing crystal transformation to form a master batch and a second kneading step of diluting the master batch together with other additive.
公开/授权文献
- US5278728A Diode mounting 公开/授权日:1994-01-11