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    • 9. 发明申请
    • TONER
    • 托尼
    • US20090239171A1
    • 2009-09-24
    • US12406259
    • 2009-03-18
    • Masahiro ANNOMasahiko NAKAMURATsuyoshi UCHIDAKenichi ONAKAJunya ONISHINaoya TONEGAWA
    • Masahiro ANNOMasahiko NAKAMURATsuyoshi UCHIDAKenichi ONAKAJunya ONISHINaoya TONEGAWA
    • G03G9/087
    • G03G9/0819G03G9/0821G03G9/0827G03G9/08755G03G9/0902G03G9/09708G03G9/09716G03G9/09725
    • It is to provide a toner which can form an image of high image quality exhibiting high resolution wherein a final visible image exhibits high image density and high thin-line reproducibility even in long-term use. In a toner incorporating at least a colored particle containing a binder resin composed of a polyester resin and a colorant, and external additive particles, the toner has a degree of average circularity of 0.950-0.990, a volume based median diameter of 4.5-8.0 μm, a volume based particle diameter dispersibility (CVVOL value) of 15-25; a metal selected from titanium, germanium, and aluminum is incorporated at a ratio of 10-1500 ppm; the above external additive particles is composed of a composite oxide incorporating a silicon atom and at least either of a titanium atom and an aluminum atom; and the existence ratio of silicon atoms in the surface thereof is higher than the existence ratio of silicon atoms in the entire part thereof.
    • 本发明提供一种可以形成高分辨率的高质量图像的调色剂,其中即使在长期使用中,最终的可见图像表现出高图像密度和高的细线再现性。 在至少包含含有由聚酯树脂和着色剂构成的粘合剂树脂的着色颗粒和外部添加剂颗粒的调色剂中,调色剂的平均圆形度为0.950-0.990,体积基准中值直径为4.5-8.0μm ,基于体积的粒径分散性(CVVOL值)为15-25; 选自钛,锗和铝的金属以10-1500ppm的比例掺入; 上述外部添加剂颗粒由包含硅原子和钛原子和铝原子中的至少一个的复合氧化物组成; 并且其表面中的硅原子的存在比率高于其整个部分中硅原子的存在比。