Patent ID: 6741827
Filing Date: 2004-05-25
Classification: G03G

Abstract:
A system for electrophotographic printing, which comprises:a photoconductive roller for collecting a photostatic charge in a selected form corresponding to an image to be printed, and for retaining toner in the form of the image on a first surface of printing media; a photostatic charging device for applying the photostatic charge to the photoconductive roller; a laser for activating selected portions of the charge applied to the photoconductive roller, such portions being in the form of the image; a development roller for transferring toner to the photoconductive roller, the toner photostatically adhering to the photoconductive roller in the form of the image; a transfer roller in contact with the photoconductive roller at a selected transfer point for transferring the toner image from the photoconductive roller to the first surface of the printing media, the transfer roller having at least one groove in proximity to each roller end for accommodating overhanging edges of printing media as a setback from the paper edges and for clearance from toner on the photoconductive roller; a power source for applying a selected voltage to the transfer roller and attracting the toner thereto so as to effect transfer of the toner image from the photoconductive roller to the printing media first surface; and a feeder for transporting the printing media in tandem with the photoconductive and transfer rollers to the selected transfer point between the rollers.