Patent ID: 7433635

Claim:
A method of producing an image on a final image receptor from image data in a multiple pass electrophotographic system, comprising the steps of: providing a photoreceptive element having a determined processing cycle; providing at least one development unit containing charged toner particles dispersed in a carrier liquid, wherein at least one of the photoreceptive element and each development unit are moved into a processing position relative to each other and performing the following steps (a) through (c) for each development unit during each complete processing cycle of the photoreceptive element; (a) applying a substantially uniform first electrostatic potential to the surface of the photoreceptive element; (b) selectively photodischarging portions of the surface of the photoreceptive element in an imagewise manner to create a first latent image having a second electrostatic potential that is less than the absolute value of the first electrostatic potential on the surface of the photoreceptive element; and (c) exposing the surface of the photoreceptive element to the charged toner particles, wherein the charged toner particles selectively deposit on the discharged portions of the surface of the photoreceptive element to develop the first latent image and create a toned image; providing a transfer assist material development unit containing a liquid transfer assist material comprising charged particles; moving at least one of the photoreceptive element and the transfer assist material development unit into a processing position relative to each other and applying the transfer assist material to at least a portion of the toned image during the processing cycle of the photoreceptive element to form a composite image layer on the photoreceptive element; and contacting the composite image layer with a final image receptor while applying an electrostatic bias potential through the final image receptor that is sufficiently strong to transfer at least a portion of the composite image layer from the photoreceptive element to the final image receptor.