Abstract A process for image reproduction comprises the steps of contacting a charge blocking surface on a photoreceptive body with a developer material containing charged toner particles, providing an electric field of predetermined polarity between the photoreceptor and a transfer medium for attracting the toner particles toward the photoreceptor surface, subjecting the photoreceptor to activating radiation in image configuration for inducing an electrostatic charge pattern in image configuration on the photoreceptor near an interface between the blocking layer and the developer material and providing an electric field of opposite polarity between the photoreceptor and the transfer medium for transferring the toner particles in image configuration to the transfer medium. Automated copying apparatus and photographic apparatus in accordance with features of the invention are provided.
An electrostatographic imaging member comprising a layer of transparent electrically insulating material carrying a thin film of transparent electrically conductive material which carries a thin film of transparent electrically insulating material which carries a layer of photoreceptor material; a layer of developer material including electrophotographic marking particles residing on a substrate and arranged adjacent to said photoreceptor layer, said substrate including a layer of recording material carrying a thin layer of electrically conductive material which carries a thin layer of electrically insulating material, said developer material layer being adjacent said thin electrically insulating material layer of said substrate; and means for establishing a blocking layer for inhibiting the exchange of electrical charge between said developing material and said photoreceptor material.
Claim 2
Dependent Claim
120 words
An electrostatographic imaging member comprising a layer of transparent electrically insulating material carrying a thin film of transparent electrically conductive material which carries a thin film of transparent electrically insulating material which carries a layer of photoreceptor material; a layer of developer material including electrophotographic marking particles residing on a substrate and arranged adjacent to said photoreceptor layer, said substrate including a layer of recording material carrying a thin layer of electrically conductive material which carries a thin layer of electrically insulating material, said developer material layer being adjacent said thin electrically insulating material layer of said substrate; and means for establishing a blocking layer for inhibiting the exchange of electrical charge between said developing material and said photoreceptor material.