| 摘要 |
An electrophotographic printing machine in which a latent image is recorded on a photoconductive surface with modulated and continuously charged regions. The modulated regions are developed with polar or polarizable marking particles with the continuously charged regions being developed with charged marking particles. The charged marking particles and polar or polarizable marking particles are different colors. Both types of marking particles are transferred simultaneously to a copy sheet and subsequently permanently affixed thereto forming a two-color copy.
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