Apparatus for printing black and plural highlight color images in a single pass

摘要

The method and apparatus for rendering latent electrostatic images visible using multiple colors of dry toner or developer and more particularly to printing toner images in black and at least two highlighting colors in a single pass of the imaging surface through the processing areas of the printing apparatus. Two of the toners are attracted to only one charge level on a charge retentive surface to thereby providing black and one highlight color while two toners are attracted to another charge level to form the second highlight color.