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    • 1. 发明申请
    • DUAL COLOR IMAGING METHOD AND APPARATUS
    • 双色成像方法和设备
    • WO1989012257A2
    • 1989-12-14
    • PCT/NL1989000042
    • 1989-06-05
    • SPECTRUM SCIENCES B.V.
    • SPECTRUM SCIENCES B.V.LANDA, BenzionNIV, YehudaGROSSINGER, IsraelADAM, YossiLEVANON, Moshe
    • G03G13/01
    • G03G13/10G03G9/12G03G13/013G03G15/104
    • An imaging system comprising apparatus for forming a latent image on a surface, said latent image including a first portion having a high level of electrostatic charge, a second portion having a low level of electrostatic charge and a third portion having an intermediate level of electrostatic charge, the charges on the first, second and third portions being of the same polarity; and apparatus for developing the latent image by contacting it with a liquid toner composition comprising an insulating, nonpolar liquid having admixed therewith a first type of pigmented particles having charges of a first polarity and a second type of pigmented particles having charges of an opposite polarity, such that the first type of pigmented particles becomes deposisted onto the first portion and the second type of pigmented particles becomes deposited onto the second portion.
    • 一种成像系统,包括用于在表面上形成潜像的装置,所述潜像包括具有高水平静电电荷的第一部分,具有低水平静电电荷的第二部分和具有中等水平静电电荷的第三部分 ,第一,第二和第三部分的电荷具有相同的极性; 以及通过使潜像显影的液体调色剂组合物与包含绝缘非极性液体的液体调色剂组合物显影的装置,所述液体调色剂组合物与第一类型具有第一极性电荷的着色颗粒和具有相反极性电荷的第二类型着色颗粒混合, 使得第一类型的着色颗粒变得沉积在第一部分上,并且第二类型着色颗粒沉积到第二部分上。