Donor roll for scavengeless development in a xerographic apparatus.

摘要

A donor roll (40) for the conveyance of toner in a development system for an electrophotographic printer includes an outer surface (42) of phenolic resin. The resin is doped to a suitable conductivity to facilitate a discharge time constant thereon of less than 300 microseconds. The donor roll is used in conjunction with an electrode structure (41) to provide scavengeless development of an electrostatic latent image on a charge-retaining member (10).