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AssigneeXerox Corporation
InventorsDamodar M. Pai, Paul J. DeFeo, Kathleen M. Carmichael, Dale S. Renfer
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An electrophotographic imaging member fabricated by forming on a charge generating layer a first coating including charge transporting molecules dispersed in a solution of a first polymer binder dissolved in a first solvent, drying the coating to remove the solvent to form a substantially dry charge transport layer, forming on the charge transport layer a second coating including charge transporting molecules and a chemical stabilizer additive selected from the group consisting of a nitrone, isobenzofuran, hydroxyaromatic compound and mixtures thereof molecularly dispersed in an electrically inactive second polymer binder in a solution of a second polymer binder dissolved in a second solvent, the first polymer binder being insoluble in the second solvent, and drying the second coating to remove the second solvent to form a substantially dry overcoat layer. This electrophotographic imaging member may be utilized in an electrophotographic imaging process.
An electrophotographic imaging member comprising a substrate, a charge generating layer, a charge transport layer comprising electrically active charge transporting molecules dissolved or molecularly dispersed in a first electrically inactive polymer binder, and an overcoat layer comprising charge transporting molecules and a chemical stabilizer additive selected from the group consisting of a nitrone, isobenzofuran, fused hydroxyaromatic compound, phenolic compound and mixtures thereof molecularly dispersed in an electrically inactive second polymer binder, said second polymer binder being soluble in a solvent in which said first polymer binder is insoluble whereby the bulk of said charge transport layer is substantially free of said nitrone, isobenzofuran, fused hydroxyaromatic compound, phenolic compound and mixtures thereof.
An imaging process comprising providing an electrophotographic imaging member comprising a substrate, a charge generating layer, a charge transport layer comprising electrically active charge transporting molecules dissolved or molecularly dispersed in a first electrically inactive polymer binder, and an overcoat layer having an outer surface comprising charge transporting molecules and a chemical stabilizer additive selected from the group consisting of a nitrone, isobenzofuran, fused hydroxyaromatic compound, phenolic compound and mixtures thereof molecularly dispersed in an electrically inactive second polymer binder, said second polymer binder being soluble in a solvent in which said first polymer binder is insoluble whereby the bulk of said charge transport layer is substantially free of said nitrone, isobenzofuran, fused hydroxyaromatic compound, phenolic compound and mixtures thereof, depositing a uniform electrostatic charge on the outer surface of said overcoating layer with a corona charging device, exposing said imaging member to a light image pattern to form an electrostatic latent image on the outer surface of said overcoating layer, developing said electrostatic latent image with electrostatically attractable marking particles to form a visible toner image, transferring said toner image to a receiving member and repeating said depositing, exposing, developing and transferring steps at least once.
A process for fabricating an electrophotographic imaging member comprising providing a substrate coated with a charge generating layer, forming on said charge generating layer a first coating comprising charge transporting molecules dispersed in a solution of a first polymer binder dissolved in a first solvent, drying:
Dependencies are inferred from the claim text.