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ELECTROPHOTOGRAPHIC DEVICE WITH IMPROVED BEAD PICKOFF ARRANGEMENT

IP.com Disclosure Number: IPCOM000025911D
Original Publication Date: 1988-Dec-31
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

Developing material used in systems for developing latent images on a charge retentive surface often comprises a mixture of toner and a "carrier" of larger granular beads of a magnetic material. If the developing system is a magnetic brush, magnetizable carrier beads also provide mechanical control for the formation of magnetic brush bristles so that toner can readily be brought into contact with the charge retentive surface. Toner is attracted to the latent image from the carrier beads to form the toner image. In this type of system, some carrier beads inevitably adhere to the charge retentive surface after the image is developed. It is thus essential for optimum operation that carrier beads remaining on the charge retentive surface after development be removed therefrom.