发明授权
- 专利标题: Color toner
- 专利标题(中): 彩色墨粉
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申请号: US10792712申请日: 2004-03-05
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公开(公告)号: US07112395B2公开(公告)日: 2006-09-26
- 发明人: Tetsuya Ida , Yasuhiro Ichikawa , Hirohide Tanikawa , Nozomu Komatsu
- 申请人: Tetsuya Ida , Yasuhiro Ichikawa , Hirohide Tanikawa , Nozomu Komatsu
- 申请人地址: JP 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: JP Tokyo
- 代理机构: Fitzpatrick, Cella, Harper & Scinto
- 优先权: JP2003-061826 20030307
- 主分类号: G03G9/087
- IPC分类号: G03G9/087
摘要:
To provide a color toner which is effective in mitigating contamination of a charging member, which is good at low temperature fixing in high-speed copying, and which is excellent in blocking resistance and electrification stability in continuous copying. Provided is a color toner containing at least a binder resin, a colorant, and a releasing agent, in which: (i) the binder resin contains at least a polyester unit; (ii) a weight average particle diameter of the color toner is greater than 6.5 μm and equal to or less than 11 μm; (iii) an average circularity A of particles in the color toner each having a circle-equivalent diameter of 3 μm or more satisfies the relationship of 0.915≦A≦0.960; (iv) a permeability B (%) of the color toner in a 45 vol % aqueous solution of methanol satisfies the relationship of 10≦B≦70; and (v) an endothermic curve obtained through differential thermal analysis (DSC) measurement of the color toner has one or multiple endothermic peaks in the temperature range of 30 to 200° C., and a temperature Tsc of the highest endothermic peak of the one or multiple endothermic peaks satisfies the relationship of 65° C.
公开/授权文献
- US20040175642A1 Color toner 公开/授权日:2004-09-09