Xerocolography tandem architectures for high speed color printing

A method of creating process color images in a single pass using dot next to dot imaging devices in tandem, said method including the steps of:

• uniformly charging a charge retentive structure of a first tandem imaging device to a predetermined voltage level;
• using a single exposure device operating at two different wavelengths, creating trilevel latent electrostatic images comprising CAD and DAD images at two different voltage levels, background areas at a third voltage level and a virtual image at said background voltage level;
• developing said CAD and DAD images of said first tandem engine with two different color inks;
• conditioning said charge retentive member of said first tandem engine for converting said virtual image to a DAD image;
• developing said image formed by said step of conditioning of said first tandem engine with an ink of a different color from said two different color inks;
• transferring said developed images of said first tandem engine to an intermediate support member;
• uniformly charging a charge retentive structure of a second tandem imaging device to a predetermined voltage level;
• using a single exposure device operating at two different wavelengths, creating trilevel latent electrostatic images comprising CAD and DAD images at two different voltage levels, background areas at a third voltage level and a virtual image at said background voltage level;
• developing said CAD and DAD images of said second tandem engine with two different color inks from said two different color inks;
• conditioning said charge retentive member of said second tandem engine for converting said virtual image to a DAD image;
• developing said image formed by said step of conditioning said charge retentive surface of said second tandem engine;
• transferring said developed images of said second tandem engine to said intermediate support member to yield process color images with the images transferred from the first tandem engine;
• at least one of said steps of developing images using said second tandem engine being effected using a color ink which is the same as one of the color inks used in developing images using said first tandem engine.