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    • 2. 发明授权
    • Manufacturing method for electrophotographic developing agent
    • 电子照相显影剂的制造方法
    • US3959153A
    • 1976-05-25
    • US41647
    • 1970-05-28
    • Shigeru SadamatsuHiroyuki KanekoKeitaro OheDaijiro Nishio
    • Shigeru SadamatsuHiroyuki KanekoKeitaro OheDaijiro Nishio
    • G03G9/08G03G9/097G03G9/12G03G9/135G03G9/00
    • G03G9/0806G03G9/09708G03G9/12G03G9/135
    • This invention is a method for manufacturing an electrophotographic developer for use in electrophotography or electrostatic recording processes. The developer comprises polymer particles by suspension polymerizing, in an aqueous phase, a polymerization liquid comprising at least one polymerizable vinyltype monomer, a polymerization initiator, and a finely divided dispersion stabilizer either sparingly soluble or insoluble in water and said monomer. Said polymerization liquid is blended prior to suspension polymerization. The improvement includes adding to said liquid, a resinous substance, as a fluidizer which is soluble in the monomer and having a solubility parameter in the range of from 7.8 to 16.1. During the blending, the dispersion stabilizer is uniformly dispersed throughout said polymerization liquid. Next, the blended polymerization liquid containing the fluidizer is suspended in the aqueous phase and then such blend is subjected to said suspension polymerization to effect polymer particles having diameters in the range of 0.1 to 100.mu..
    • 本发明是用于制造用于电子照相或静电记录方法的电子照相显影剂的方法。 显影剂包括聚合物颗粒,其在水相中悬浮聚合,其包含至少一种可聚合乙烯基型单体,聚合引发剂和微溶于或不溶于水和所述单体的细分散稳定剂。 所述聚合液体在悬浮聚合之前共混。 改进之处在于,向所述液体中添加可溶于单体并具有7.8〜16.1范围内的溶解度参数的流化剂的树脂状物质。 在共混期间,分散稳定剂均匀分散在整个聚合液体中。 接着,将含有流化器的共混聚合液悬浮在水相中,然后将这种共混物进行所述悬浮聚合,以实现直径在0.1至100μm范围内的聚合物颗粒。