发明名称 |
Magenta toner, process for producing same and color image forming method using same |
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.
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申请公布号 |
US5912099(A) |
申请公布日期 |
1999.06.15 |
申请号 |
US19970904476 |
申请日期 |
1997.08.04 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KANBAYASHI, MAKOTO;TAYA, MASAAKI;FUJITA, RYOICHI;IIDA, WAKASHI;IDA, TETSUYA |
分类号 |
G03G9/08;G03G9/09;(IPC1-7):G03G9/08 |
主分类号 |
G03G9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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