Overcoated electrostatographic photoreceptor

Claim 2

An electrostatographic photoreceptor which comprises: a. a conductive substrate; b. a layer of an alloy of selenium and arsenic as photoconductive insulating material in operative contact with the conductive substrate; and c. an organic overcoating on said photoconductive layer comprising a crosslinkable polymeric composition comprised of: i. a first polymer which is the addition polymerization product of methyl methyacrylate, n-butylacrylate and acrylic or methacrylic acid; and ii. a second polymer which is the addition polymerization product of styrene and maleic anhydride.

Claim 3

The photoreceptor of claim 1 wherein the alloy contains from about 0.3 to about 48.7 weight percent arsenic.

Claim 4

The photoreceptor of claim 2 wherein the alloy comprises about 63 percent selenium and 37 percent arsenic.

Claim 5

An electrostatographic photoreceptor which comprises: a. a conductive substrate; b. a layer of a photoconductive insulating material in operative contact with the conductive substrate which photoconductive material is an alloy comprising from about 0.3 to about 48.7 weight percent arsenic with the remainder being essentially amorphous selenium; and c. an organic overcoating on said photoconductive layer comprising a crosslinkable polymeric composition comprised of: i. 75 to 90 weight percent of a first polymer which is the addition polymerization product of from about 45 to 65 mole percent methyl methacrylate, 25 to 40 mole percent n-butylacrylate and 5 to 15 mole percent acrylic or methacrylic acid; and ii. 10 to 25 weight percent of a second polymer which is the addition polymerization product of styrene and maleic anhydride wherein the mole ratio of styrene to maleic anhydride is from 2:1 to 1:1.

Claim 6

An electrostatographic photoreceptor which comprises: a. a conductive substrate; b. a layer of a photoconductive insulating material in operative contact with the conductive substrate which photoconductive material is an alloy comprising from about 0.3 to about 48.7 weight percent arsenic with the remainder being essentially amorphous selenium; and c. an organic overcoating on said photoconductive layer comprising a crosslinkable polymeric composition comprised of: i. 75 to 90 weight percent of a first polymer which is the addition polymerization product of from about 45 to 65 mole percent methyl methacrylate, 25 to 40 mole percent n-butylacrylate and 5 to 15 mole percent acrylic or methacrylic acid; and ii. 10 to 25 weight percent of a second polymer which is the addition polymerization product of styrene and maleic anhydride wherein the mole ratio of styrene to maleic anhydride is from 2:1 to 1:1.

Claim 7

The photoreceptor of claim 4 wherein the alloy contains about 63 percent selenium and about 37 percent arsenic; the first polymer contains methacrylic acid and the ratio of styrene to maleic anhydride is 2:1.

Claim 8

The photoreceptor of claim 5 wherein the carboxyl groups of the methacrylic acid are crosslinked with either zinc or zirconium.

Claim 9

The photoreceptor of claim 6 wherein the crosslinking metal is zinc.