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    Resin-coated carrier, two component type developer, and developing method
    31.
    发明授权
    Resin-coated carrier, two component type developer, and developing method 有权
    树脂涂层载体，双组分型显影剂和显影方法

    公开(公告)号：US6146801A

    公开(公告)日：2000-11-14

    申请号：US407294

    申请日：1999-09-29

    申请人： Yasuhiro Ichikawa ,  Tetsuya Ida

    发明人： Yasuhiro Ichikawa ,  Tetsuya Ida

    IPC分类号： G03G9/08 ,  G03G9/10 ,  G03G9/113

    CPC分类号： G03G9/10 ,  G03G9/113 ,  G03G9/1136

    摘要： A resin-coated carrier for two component type developers, with carrier particles having a carrier core material and a coat layer which covers the surface of the carrier core material. The resin-coated carrier has a 50% particle diameter C (D.sub.50) from 25 .mu.m to 70 .mu.m, contains carrier particles smaller than 22 .mu.m in particle diameter in an amount from 0.1% by number to 20% by number and contains carrier particles of 62 .mu.m or larger in particle diameter in an amount from 2% by number to 35% by number. The carrier core material has a BET specific surface area SW1 where the coat layer has been removed and the resin-coated carrier has a BET specific surface area SW2. The SW1 and SW2 satisfy the following expression (I), and the resin-coated carrier satisfies a shape factor SF-1 of the following expression (II) and a shape factor SF-2 of the following expression (III):80.ltoreq.SW1-SW2.ltoreq.650(cm.sup.2 /g) (I)110.ltoreq.SF-1.ltoreq.160 (II)105.ltoreq.SF-2.ltoreq.150 (III)

    摘要翻译： 用于双组分型显影剂的树脂涂布载体，载体颗粒具有载体芯材料和覆盖载体芯材表面的涂层。 树脂被覆载体具有25μm至70μm的50％粒径C（D50），其粒径小于22μm的载体颗粒，其数量为0.1％至20％，并且含有 粒径为62μm或更大的载体颗粒的数量为2％至35％。 载体芯材料具有BET比表面积SW1，其中涂层被去除并且树脂涂覆的载体具有BET比表面积SW2。 SW1和SW2满足下面的表达式（I），并且树脂涂覆的载体满足以下表达式（II）的形状因子SF-1和以下表达式（III）的形状因子SF-2： = SW1-SW2

    MAGNETIC CARRIER
    32.
    发明申请
    MAGNETIC CARRIER 有权
    磁性载体

    公开(公告)号：US20140051023A1

    公开(公告)日：2014-02-20

    申请号：US14114610

    申请日：2012-04-25

    申请人： Yojiro Hotta ,  Naoki Okamoto ,  Kazuo Terauchi ,  Ryuichiro Matsuo ,  Tetsuya Ida

    发明人： Yojiro Hotta ,  Naoki Okamoto ,  Kazuo Terauchi ,  Ryuichiro Matsuo ,  Tetsuya Ida

    IPC分类号： G03G9/083

    CPC分类号： G03G9/0839 ,  G03G9/1132 ,  G03G9/1139

    摘要： Provided is the following magnetic carrier. The magnetic carrier maintains high developing performance even when the number of sheets to be output is large. Its charge-providing performance hardly reduces even when toner or an external additive is spent on the magnetic carrier. In addition, the magnetic carrier is strong in resistance against standing. The magnetic carrier includes a magnetic carrier core and a resinous coating layer formed on a surface of the magnetic carrier core, in which the resinous coating layer contains a resin composition and silica-alumina composite particles.

    摘要翻译： 提供以下磁性载体。 即使要输出的片材的数量大，磁性载体也保持高的显影性能。 即使将调色剂或外部添加剂用于磁性载体上，其电荷提供性能也几乎不降低。 此外，磁性载体的抗静电性较强。 磁性载体包括磁性载体芯和形成在磁性载体芯的表面上的树脂涂层，其中树脂涂层含有树脂组合物和二氧化硅 - 氧化铝复合颗粒。