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    CARRIER CORE MATERIAL FOR ELCTROPHOTOGRAPHIC DEVELOPING AGENT, PROCESS FOR PRODUCING THE CORE MATERIAL, CARRIER FOR ELCTROPHOTOGRAPHIC DEVELOPING AGENT, AND ELECTROPHOTOGRAPHIC DEVELOPING AGENT.
    4.
    发明公开
    CARRIER CORE MATERIAL FOR ELCTROPHOTOGRAPHIC DEVELOPING AGENT, PROCESS FOR PRODUCING THE CORE MATERIAL, CARRIER FOR ELCTROPHOTOGRAPHIC DEVELOPING AGENT, AND ELECTROPHOTOGRAPHIC DEVELOPING AGENT. 有权
    载体芯材电发展的感光介质，METHOD FOR核材料的载体电照相显影水利电力照相显影资金的生产

    公开(公告)号：EP2133750A1

    公开(公告)日：2009-12-16

    申请号：EP08738926.8

    申请日：2008-03-26

    申请人： DOWA Electronics Materials Co., Ltd. ,  DOWA IP Creation Co., Ltd.

    发明人： YAMADA, Tomoya ,  FUJITA, Isao ,  AIKI, Yoshiaki

    IPC分类号： G03G9/087 ,  G03G9/107 ,  G03G9/113

    CPC分类号： G03G9/0804 ,  G03G9/0815 ,  G03G9/0819 ,  G03G9/08782 ,  G03G9/10 ,  G03G9/107 ,  G03G9/1075 ,  G03G9/113

    摘要： To provide a carrier for two-component electrophotographic developer not only having excellent fluidity but also having proper surface irregularities necessary for imparting electric charge, without generating cracks/chipping of particles even under an influence of stirring stress over a long period of time. A particle surface has raised parts of striped pattern extending almost continuously in a plurality of directions while being superposed on one another, with a surface formed with raised parts of striped pattern occupying 80% or more of the whole surface of a particle. Depths of grooves between the adjacent raised parts are 0.05µm or more and 0.2µm or less, average surface roughness Ra is 0.1µm or more and 0.3µm or less, roundness is 0.90 or more, and average particle size is 15µm or more and 100µm or less, and a carrier core material thus constituted is coated with resin. Thus, the carrier for two-component electrophotographic developer is preprared.

    摘要翻译： 一种用于双组分电子照相显影剂不仅具有优异的流动性，但这样具有适当的表面凹凸必要赋予电荷提供一个载体，而不会产生裂纹/即使经过长时间搅拌压力的影响下，颗粒的破碎。 的粒子表面具有凸起条纹图案的方向的多元性几乎连续地延伸的部分，而上互相重叠，与条纹图案占据粒子的整个表面的80％或更多的隆起部形成的面。 邻凸起部分之间的槽深度为0.05μm以上且0.2μm的或更小，平均表面粗糙度Ra为0.1μm以上且0.3μm的或更小，圆度为0.90以上，且平均粒径为15微米以上，100微米 或更小，并且因此构成的载体芯材涂覆有树脂。 因此，对于双组分电子照相显影剂的载体preprared。