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    • 1. 发明授权
    • Toner for developing latent electrostatic images
    • 用于显影静电潜像的调色剂
    • US4950573A
    • 1990-08-21
    • US121483
    • 1987-11-17
    • Kimitoshi YamaguchiKazuhiko UmemuraYoshihiro Nomura
    • Kimitoshi YamaguchiKazuhiko UmemuraYoshihiro Nomura
    • G03G9/08G03G9/087
    • G03G9/0825G03G9/08751G03G9/08773
    • A toner for developing latent electrostatic images is disclosed, which comprises (a) thermofusible base particles A having a softening point of 80.degree. C. or less, a flow starting temperature of 110.degree. C. or less, and an average particle size of 5 to 25 .mu.m, and (b) small particles B comprising as the main component an organic polymeric material having a softening point at least 5.degree. C. higher than the softening point of the base particles A and no practical softening point, and an average particle size ranging from 0.1 .mu.m or more, but not more than 1/4 of the average particle size of the base particles A, which small particles B are embedded in the surface of the base particles A so as to cover the surface of the base particles A to a depth of less than the particle size of the small particles B.
    • 公开了用于显影静电图像的调色剂,其包含(a)软化点为80℃或更低,流动起始温度为110℃或更低,平均粒度为5的热熔性基础颗粒A 至(b)作为主要成分的小粒子B,其含有软化点比基础粒子A的软化点高5℃以上的有机聚合物,没有实用的软化点,平均粒径 粒径为0.1μm以上且不超过基体颗粒A的平均粒径的1/4,该颗粒B被嵌入基体颗粒A的表面,以覆盖基体颗粒A的表面 基础颗粒A的深度小于小颗粒B的粒度。