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US 2015/0030974 A1Published application
Photoconductor
AssigneeXerox Corporation
InventorsGregory M. McGuire, Jennifer A. Coggan, Alan E.J. Toth, Nan-Xing Hu, Yu Liu
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Abstract
Described herein is a photoreceptor having a substrate, a charge generating layer, a charge transport layer comprising N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine having a purity of from about 95 percent to about 100 percent, and a protective overcoat layer. The N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine has been treated by a purification process two or more times.
Claims20
A photoreceptor comprising:
- a substrate;
- a charge generating layer;
- a charge transport layer comprising N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine having a purity of from about 95 percent to about 100 percent;
- and
- a protective overcoat layer, wherein the N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine has been treated by a purification process two or more times.
2 more elements
A process for forming a photoreceptor comprising:
- providing a photoreceptor substrate;
- applying a charge generating layer;
- applying a charge transport layer comprising N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine having a purity of from about 95 percent to about 100 percent;
- and applying a protective overcoat layer over the substrate wherein the N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine has been treated by a purification process two or more times, wherein the purification process comprises:
- providing a mixture of N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine and an absorbent selected from the group consisting of alumina, silica, magnesium sulfate and activated clays;
- refluxing a solvent through the mixture at a temperature of from about 80° C. to about 180° C. for a period of time of from about 4 hours to about 48 hours;
- filtering the solvent to obtain N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine.
4 more elements
A method of forming an image, comprising:
- applying a charge to a photoreceptor comprising at least a charge transport layer comprising N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine having a purity of from about 95 percent to about 100 percent, exposing the photoreceptor to electromagnetic radiation;
- developing a latent image formed by exposing the photoreceptor to the electromagnetic radiation to form a visible image;
- and transferring the visible image to a print substrate;
- wherein the N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine has been treated by a purification process two or more times, and wherein the purification process comprises:
- providing a mixture of N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine and an absorbent selected from the group consisting of alumina, silica, magnesium sulfate and activated clays;
- refluxing a solvent through the mixture at a temperature of from about 80° C. to about 180° C. for a period of time of from about 4 hours to about 48 hours;
- filtering the solvent to obtain N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine.
4 more elements
Dependencies are inferred from the claim text.