Photoconductors employing sensitized extrinsic photogenerating pigments
AssigneeXerox Corporation
InventorsDamodar M. Pai, Andrew R. Melnyk, Donald J. Teney
Life of this patent
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Abstract
A layered photoreceptor is composed of a substrate, an extrinsic pigment layer that has been sensitized disposed over the substrate, and a charge transport polymer in contact with the pigment layer. A method for producing a photoreceptor comprises depositing a layer of sensitizing electron donor material in a polymer binder on a substrate. An extrinsic pigment layer is deposited on the layer of sensitizing electron donor material. A charge transport layer is deposited on the pigment layer.
Claims20
A layered photoreceptor comprised of:
- a substrate;
- an extrinsic pigment layer that has been sensitized by being in contact with electron donor molecules disposed over the substrate;
- and
- a charge transport layer comprised of a charge transporting polymer layer disposed over the pigment layer.
A photoreceptor comprised of a conducting substrate;
- a charge generator layer of extrinsic pigment disposed over said substrate;
- a sensitizing layer comprised of electron donor molecules in contact with said charge generator layer;
- and a charge transport layer disposed on said sensitizing layer.
A method for producing a photoreceptor comprising:
- depositing a layer of sensitizing electron donor material in a polymer binder on a substrate;
- depositing an extrinsic pigment layer on the layer of sensitizing electron donor material;
- and
- depositing a charge transport layer comprising a charge transporting polymer on said pigment layer.
An imaging process comprising;
- providing an electrophotographic imaging member comprised of a sensitizer layer, a charge generating layer and a charge transport layer, said charge sensitizer layer comprising electron donor molecules in an binder;
- depositing a uniform electrostatic charge on said imaging member with a corona charging device;
- exposing said imaging member to activating radiation in image configuration to form an electrostatic latent image on said imaging member;
- developing said electrostatic latent image with electrostatically attractable marking particles to form a toner image;
- transferring said toner image to a receiving member;
- and
- repeating said depositing, exposing, developing and transferring steps.
Dependencies are inferred from the claim text.