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    • 3. 发明授权
    • Electrographic development process
    • 电子发展过程
    • US4401740A
    • 1983-08-30
    • US337213
    • 1982-01-05
    • Toshiyasu KawabataHachiro TosakaToshiki Nanya
    • Toshiyasu KawabataHachiro TosakaToshiki Nanya
    • G03G9/08G03G13/08G03G13/09G03G15/08G03G15/09
    • G03G15/0806G03G13/08G03G13/09G03G2215/0614G03G2215/0641
    • An electrographic development process wherein an electrically charged developer comprising electrically conductive particles with a volume resistivity of 10.sup.9 .OMEGA.cm or less and toner particles with a volume resistivity of 10.sup.12 .OMEGA.cm or more, with the mixing ratio of the respective particles being from 1:99 to 40:60, is brought into contact, or proximity, with a latent electrostatic image with a polarity opposite to that of the electrically charged developer, and the latent electrostatic image is developed to a visible image by the developer, through the steps of supplying the developer to a developer doner member; forming a developer layer thereon with a thickness ranging from 150 .mu.m to 300 .mu.m; subjecting the developer to charge injection to a potential ranging from -150 V to -500 V; and supplying the developer to a latent electrostatic image bearing member for development of the latent electrostatic image thereon.
    • 一种电子照相显影方法,其中包含体积电阻率为10 9Ω·cm或更小的导电颗粒的带电显影剂和体积电阻率为10 10Ω·cm或更大的调色剂颗粒,各颗粒的混合比为1:99 至40:60与静电潜像接触或接近,其极性与带电显影剂的极性相反,并且静电潜像被显影剂显影为可见图像,通过供给步骤 开发商到开发人员; 在其上形成厚度为150μm至300μm的显影剂层; 使显影剂电荷注入到-150V至-500V的电位; 并将显影剂供应到用于显影静电潜像的静电潜像承载部件。