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    Electrophotographic toner and contact development method using the toner
    1.
    发明授权
    Electrophotographic toner and contact development method using the toner 失效
    使用调色剂的电子照相调色剂和接触显影方法

    公开(公告)号：US5804347A

    公开(公告)日：1998-09-08

    申请号：US658542

    申请日：1996-06-05

    申请人： Kazushige Inoue ,  Toru Takatsuna ,  Yukihiro Mori ,  Etsuro Nakagawa ,  Hiroko Higuchi

    发明人： Kazushige Inoue ,  Toru Takatsuna ,  Yukihiro Mori ,  Etsuro Nakagawa ,  Hiroko Higuchi

    IPC分类号： G03G9/087 ,  G03G9/09 ,  G03G9/097

    CPC分类号： G03G9/08755 ,  G03G9/08791 ,  G03G9/0904

    摘要： This invention provides an electrophotographic toner comprising the polyester resin being fixing resin and the electric charge control resin having the functional group that endows positively charging property to the toner, in which the polyester resin has an acid value of not more than 10 mgKOH/g and a hydroxyl value of not more than 40 mgKOH/g, and the functional group is present in 2 to 5 mol % in the electric charge control resin. This electrophotographic toner has stable positively charging property, so that good image is obtainable.

    摘要翻译： 本发明提供一种电子照相调色剂，其包含作为固定树脂的聚酯树脂和具有赋予调色剂带正电性的官能团的电荷控制树脂，其中聚酯树脂的酸值不大于10mgKOH / g， 羟基值不大于40mgKOH / g，官能团在电荷控制树脂中以2至5mol％存在。 这种电子照相调色剂具有稳定的带正电性，从而可以获得良好的图像。

    Developing apparatus and image forming apparatus employing it
    2.
    发明授权
    Developing apparatus and image forming apparatus employing it 失效
    显影装置及其使用的图像形成装置

    公开(公告)号：US06760560B2

    公开(公告)日：2004-07-06

    申请号：US10156830

    申请日：2002-05-30

    申请人： Takashi Nagai ,  Hidekazu Tamura ,  Seiji Kikushima ,  Toru Takatsuna ,  Hiroko Higuchi ,  Hiroaki Moriyama ,  Kouzou Teramoto ,  Noriya Okamoto

    发明人： Takashi Nagai ,  Hidekazu Tamura ,  Seiji Kikushima ,  Toru Takatsuna ,  Hiroko Higuchi ,  Hiroaki Moriyama ,  Kouzou Teramoto ,  Noriya Okamoto

    IPC分类号： G03G1509

    CPC分类号： G03G15/0928

    摘要： A developing apparatus has a developer supporting member 41 with a surface roughness RZ in the range from 3.0 to 5.5 &mgr;m and a one-component developer T with a bulk density in the range from 0.35 to 0.55 g/ml, and an image is developed by forming a layer of the developer T on the developer supporting member 41. This makes it possible to form a thin toner layer stably despite changes in ambient conditions, and to prevent low image density and fogging. The absolute value of the amount of electric charge with which the developer T is charged is preferably in the range from 3.0 to 10.0 &mgr;C/g. The developer supporting member 41 is made preferably of stainless steel.

    摘要翻译： 显影装置具有表面粗糙度RZ在3.0至5.5μm的显影剂支撑构件41和堆积密度在0.35至0.55g / ml范围内的单组分显影剂T，并且图像由 在显影剂支撑构件41上形成显影剂T的层。这使得可以尽管环境条件的变化稳定地形成薄的调色剂层，并且防止低图像浓度和起雾。 显影剂T的充电量的绝对值优选在3.0〜10.0μC/ g的范围内。 显影剂支撑构件41优选由不锈钢制成。