Conductive barrier coat for electrostatic masters

摘要

An electrostatic master for lithographic printing characterized by a base, a barrier coat thereon, and a photoconductive layer. The barrier coat includes a hydrophobic thermoplastic film-forming resin having labile hydrogen-containing functional groups and a conductive agent. The conductive agent is a quaternary ammonium salt. The salts have only a minimal effect on water resistance and result in excellent reduction in the dielectric characteristics of the barrier coat.