Automatic duplex printing apparatus

摘要

A duplex printer apparatus utilizing non-contact printing devices in the form of a Direct Electrostatic Printer (DEP). Simplex images are formed on one side of an intermediate in the form of a belt using one or more DEP printing devices. A substrate such as plain paper is superimposed on the images formed on the intermediate. Continued movement of the belt in its endless path effects passage of the substrate past different DEP printing devices for forming images on the other side of the substrate.