Photoconductive imaging member with hydroxyaromatic antioxidant
AssigneeXerox Corporation
InventorsJohn W. P. Lin, Lesley P. Dudek, William W. Limburg, Eric J. Schneider
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Abstract
An electrophotographic imaging member is disclosed comprising a conductive layer, a charge transport layer comprising an aromatic amine charge transport or hydrazone molecule in a continuous polymeric binder phase, and a contiguous charge generation layer comprising a photoconductive material, a polymeric binder and a hydroxyaromatic antioxidant. An electrophotographic imaging process using this member is also described.
Claims13
An electrophotographic imaging member comprising a conductive layer, a charge transport layer comprising an aromatic amine charge transport or hydrazone molecule in a continuous polymeric binder phase, and a contiguous charge generation layer comprising a photoconductive material, a polymeric binder and from about 0.01 percent by weight to about 20 percent by weight of a hydroxyaromatic antioxidant based on the total weight of said charge generation layer, said hydroxyaromatic antioxidant selected from the group consisting of a hydroxyaromatic compound having the structural formula ##STR8## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of hydrogen, a hydroxyl group, an alkoxy group containing 1 to 6 carbon atoms, and an alkyl group containing 1 to 6 carbon atoms, wherein at least one of said R.sub.1, R.sub.2, R.sub.3, and R.sub.4 is a hydroxyl group, and R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, an alkenyl group containing 2 to 40 carbon atoms, and an alkyl group containing 1 to 40 carbon atoms, and monomeric or polymeric phenolic compounds having the structural formula ##STR9## wherein R.sub.7, R.sub.8, R.sub.9, R.sub.10, and R.sub.11 are independently selected from the group consisting of hydrogen, a hydroxyl group, a linear alkyl group containing 1 to 20 carbon atoms, a branched alkyl group containing 1 to 20 carbon atoms, an alkenyl group containing 1 to 20 carbon atoms, an ester group containing 1 to 20 carbon atoms, an unsubstituted phenyl group, a substituted phenyl group, a napthyl group, an ester group, and an alkoxy group containing 1 to 20 carbon atoms.
An electrophotographic imaging process comprising providing an electrophotographic imaging member comprising a conductive layer, a charge transport layer comprising an aromatic amine charge transport or hydrazone molecule in a continuous polymeric binder phase and a contiguous charge generation layer comprising a photoconductive material, a polymeric binder and from about 0.01 percent by weight to about 20 percent by weight of a hydroxyaromatic antioxidant based on the total weight of said charge generation layer, said hydroxyaromatic antioxidant selected from the group consisting of a hydroxyaromatic compound having the structural formula ##STR11## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are indenpendently selected from the group consisting of hydrogen, a hydroxyl group, an alkoxy group containing 1 to 6 carbon atoms, and an alkyl group containing 1 to 6 carbon atoms, wherein at least one of said R.sub.1, R.sub.2, R.sub.3, and R.sub.4 is a hydroxyl group, and R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, an alkenyl group containing 2 to 40 carbon atoms, and an alkyl group containing 1 to 40 carbon atoms, and monomeric or polymeric phenolic compounds having the structural formula ##STR12## wherein R.sub.7, R.sub.8, R.sub.9, R.sub.10, and R.sub.11 are independently selected from the group consisting of hydrogen, a hydroxyl group, a linear alkyl group containing 1 to 20 carbon atoms, a branched alkyl group containing 1 to 20 carbon atoms, an alkenyl group containing 1 to 20 carbon atoms, an ester group containing 1 to 20 carbon atoms, an unsubstituted phenyl group, a substituted phenyl group, a napthyl group, an ester group, and an alkoxy group containing 1 to 20 carbon atoms, uniformly depositing electrostatic charges on said imaging member, exposing said imaging member to activating radiation in image configuration to form an electrostatic latent image on said imaging member, contacting said electrostatic latent image with electrostatically attractable toner particles to form a deposited toner image in image configuration, transfering said toner image to a receiving member, erasing any residual electrostatic charge on said imaging member and repeating said depositing, exposing, contacting, transfering and erasing steps.
Dependencies are inferred from the claim text.