Non-magnetic one-component developer and image forming process
    3.
    发明授权
    Non-magnetic one-component developer and image forming process 失效
    非磁性单组分显影剂和成像工艺

    公开(公告)号:US5738966A

    公开(公告)日:1998-04-14

    申请号:US758939

    申请日:1996-12-03

    IPC分类号: G03G9/09 G03G9/097 G03G15/08

    CPC分类号: G03G9/0904 G03G9/09783

    摘要: A negatively electrifiable, non-magnetic and single component developer comprising a binder resin, a carbon black and a charge control agent, wherein the carbon black has an average primary particle diameter of 20 to 50 nm and a pH of 2 to 5, and the charge control agent comprises a compound represented by the following formula: ##STR1## wherein M represents a metal atom selected from the group consisting of zinc, iron, nickel and cobalt, and R.sub.1 and R.sub.2 each represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms. An image forming process using the developer is also disclosed. This one-component developer, which is suitable for use as a black toner in color image formation, can be stably charged and transported over long to give images free from fogging and having evenness of density and hardly poses problems such as dirts and color mixing over long.

    摘要翻译: 一种负电荷,非磁性和单组分显影剂,其包含粘合剂树脂,炭黑和电荷控制剂,其中所述炭黑的平均一次粒径为20〜50nm,pH为2〜5, 电荷控制剂包括由下式表示的化合物:其中M表示选自锌,铁,镍和钴的金属原子,R1和R2各自表示氢原子或具有1个 至6个碳原子。 还公开了使用显影剂的成像方法。 适合用作彩色图像形成中的黑色调色剂的单组分显影剂可以长时间稳定地加载和输送,以使图像不起雾,并且具有均匀的密度,并且几乎不产生诸如染色和混色的问题 长。