Low cost process multicolor image reproduction machine

A low cost process multicolor image reproduction machine comprising:

• (a) a rotatable endless toner image receiving and transfer member;
• (b) sheet handling means including a back up roller for defining a copy sheet path, said back up roller having a first position, and a second position defining a toner image transfer nip against said rotatable endless toner image receiving and transfer member;
• (c) a rotatable photoreceptor member forming a contact electrostatic printing nip with said rotatable endless toner image receiving and transfer member, for separating toner image areas from toner background areas of a color separation toner image on said photoreceptor member;
• (d) imaging means for forming the color separation toner image on said photoreceptor member, said imaging means including a developer material supply and coating mechanism having a plural number of different color developer materials including toner for forming a layer of a desired color of toner on said photoreceptor member, a charging device for uniformly charging said layer of the desired color of toner, and an exposure device for imagewise exposing said charged layer to a light pattern, of a color separation input image, thereby forming said toner image areas and toner background areas of each desired color separation of a multicolor image to be separated within said contact electrostatic printing nip;
• and
• (e) a controller for controlling said sheet handling means to supply a copy sheet and to move said back up roller from said first position into said second position, and for controlling build up of color separation toner images into a multicolor toner image on said rotatable endless toner image receiving and transfer member.