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    • 9. 发明授权
    • Method of multicolor electrophotographic printing with unipolar toner
    • 使用单极调色剂的多色电子照相印刷方法
    • US06205311B1
    • 2001-03-20
    • US09284709
    • 1999-06-17
    • Volkhard MaessMartin Schleusener
    • Volkhard MaessMartin Schleusener
    • G03G1501
    • G03G15/0152G03G15/0163
    • A method for multicolor electrophotographic printing includes a photoconductive layer system having surface elements or surface regions that are provided with an initial negative potential, then are exposed to varying degrees and developed with negatively charged toner particles of a color. A uniform light source is arranged closed to the photoconductive layer system and then the surface elements are developed with a second color toner. In particular, the image being printed has image elements of different colors which correspond to different surface elements of the photoconductor. These surface elements are differently illuminated to achieve different potentials and are developed by color particles by depositing the color particles on the respective surface elements. The charge potential of ones of the surface elements is increased and then surface elements not covered by color particles are illuminated to reduce the charge potential there prior to subsequent development of further surface elements.
    • 一种用于多色电子照相印刷的方法包括具有表面元件或具有初始负电位的表面区域的光电导层系统,然后暴露于不同程度并用带负电荷的调色剂颗粒显色。 均匀的光源被布置在光电导层系统的闭合处,然后表面元件用第二种彩色调色剂显影。 特别地,正在打印的图像具有与感光体的不同表面元件对应的不同颜色的图像元素。 这些表面元件被不同地照亮以实现不同的电位,并且通过在各个表面元件上沉积着色颗粒而通过彩色颗粒显影。 一些表面元件的电荷电位增加,然后照亮未被彩色颗粒覆盖的表面元件,以在随后开发其它表面元件之前降低其电荷电位。