Coated photoconductors
AssigneeHewlett-Packard Development Company, L.P.
InventorsKrzysztof Nauka, Zhang-Lin Zhou, Hou T. Ng
Life of this patent
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Abstract
The present disclosure is related to coated photoconductors. In an example, a coated photoconductor can comprise a photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto and a top coating adhered to the photoconductor. The top coating can comprise a cross-linkable polymer, a cross-linker, and a polymeric dopant having a weight average molecular weight of less than 500,000. Additionally, the top coating can have a thickness of 0.1 μm to 12 μm and the polymeric dopant can be present in the top coating at a concentration of 0.1 wt % to 10 wt %.
Claims16
A coated photoconductor, comprising:
- a photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto;
- and
- a top coating adhered to the photoconductor, the top coating comprising a cross-linkable polymer, a cross-linker, and a polymeric dopant having charge transport properties and having a weight average molecular weight of less than 500,000;
- wherein the top coating has a thickness of 0.1 μm to 12 μm and the polymeric dopant is present in the top coating at a concentration of 0.1 wt % to 10 wt %.
A coated photoconductor comprising:
- a photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto;
- and
- a top coating adhered to the photoconductor, the top coating comprising a cross-linkable polymer, a cross-linker, and a polymeric dopant having charge transport properties and having a weight average molecular weight of less than 500,000;
- wherein the top coating has a thickness of 0.1 μm to 12 μm and the polymeric dopant is present in the top coating at a concentration of 0.1 wt % to 10 wt %, and
- wherein the polymeric dopant is selected from the group of polyfluorene and its co-polymers;
- polyanilines and its co-polymers;
- polythiophenes and its co-polymers;
- polycarbazoles and its co-polymers;
- and mixtures thereof.
A coated photoconductor comprising:
- a photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto;
- and
- a top coating adhered to the photoconductor, the top coating comprising a cross-linkable polymer, a cross-linker, and a polymeric dopant having charge transport properties and having a weight average molecular weight of less than 500,000;
- wherein the top coating has a thickness of 0.1 μm to 12 μm and the polymeric dopant is present in the top coating at a concentration of 0.1 wt % to 10 wt %, and
- wherein the polymeric dopant is a polyfluorene copolymer having a weight average molecular weight of less than 50,000.
A process of manufacturing a photoconductor, comprising applying a top coating to the photoconductor, the photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto, wherein the top coating comprises a cross-linkable polymer, a cross-linker, and a polymeric having charge transport properties, and having a weight average molecular weight of less than 500,000, and wherein the polymeric dopant is dispersed throughout the top coating.
A process of manufacturing a photoconductor, comprising applying a top coating to the photoconductor, the photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto, wherein the top coating comprises a cross-linkable polymer, a cross-linker, and a polymeric dopant having charge transport properties, and having a weight average molecular weight of less than 500,000, and wherein the polymeric dopant is dispersed throughout the top coating,
- wherein the polymeric dopant is at least one of:
- selected from the group of polyfluorene and its co-polymers;
- polyanilines and its co-polymers;
- polythiophenes and its co-polymers;
- and polycarbazoles and its co-polymers;
- and
- a polyfluorene copolymer having a weight average molecular weight of less than 50,000.
Dependencies are inferred from the claim text.