A full color, high speed printing machine

摘要

An electrophotographic printing machine for producing a color image on a recording sheet (26), comprising a photoconductive member (100). First means (101a) are provided for charging the photoconductive member. First means are provided for exposing (20a) the charged photoconductive member for recording an electrostatic latent image thereon. First means (11-17a) are provided for developing the electrostatic latent image with liquid developer material (13a) containing toner particles of a first color to form a developed image.on the photoconductive member. Second means (100a) are provided for charging the developed image on the photoconductive member. Second means (20b) are provided for exposing the charged developed image on the photoconductive member. Second means (11-17b) are provided for developing the developed image with liquid developer material (13b) containing toner particles of a second color to form a composite image on the photoconductive member (100). The electrophotographic printing machine also includes an intermediate member (110). First means (111) are provided for transferring the composite image from the photoconductive member (100) to the intermediate member (110). A heater (32) is provided, in communication with an outer surface of the intermediate member(110), for heating the intermediate member so as to cause the tackification of the toner particles of the composite image on the outer surface thereof. And second means (36), defining a nip (34) with the outer surface of the intermediate member (110), are provided for transferring the tackified toner particles of the composite image to the recording sheet (26) passing through the nip (34), whereby the tackified toner particles of the composite image is cooled upon contact with the recording sheet (26) to become permanently fixed to the surface of the recording sheet. <IMAGE>