Photoconductors employing sensitized extrinsic photogenerating pigments
First Claim
Patent Images
1. 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.
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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.
33 Citations
20 Claims
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1. A layered photoreceptor comprised of:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. 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 charge generator layer of extrinsic pigment disposed over said substrate;
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19. 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.
- depositing a layer of sensitizing electron donor material in a polymer binder on a substrate;
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20. An imaging process comprising;
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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.
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Specification