Overcoated photoresponsive device

Claim 2

An improved photoresponsive device comprised in the order stated of the following layers: (1) a substrate (2) an adhesive layer, (3) a hole transport layer, (4) an inorganic, panchromatic photogenerating layer, (5) a photoconductive composition sensitive in the red or infrared region of the spectrum, which composition is selected from the group consisting of organic photoconductive compositions, charge transfer complex compositions, dye sensitizers, or mixtures thereof and (6) an polymeric overcoating layer.

Claim 3

An improved photoresponsive device comprised in the order stated of the following layers: (1) a substrate, (2) an adhesive layer, (3) a hole transport layer, (4) a photoconductive composition sensitive in the red or infrared red region of the spectrum, which composition is selected from the group consisting of organic photoconductive compositions, charge transfer complex compositions, dye sensitizers, or mixtures thereof, (5) an inorganic panchromatic photogenerating layer and (6) an polymeric overcoating layer.

Claim 4

An improved photoresponsive device comprised in the order stated of the following layers: (1) a substrate, (2) an adhesive layer, (3) a hole transport layer, (4) a photoconductive composition sensitive in the red or infrared red region of the spectrum, which composition is selected from the group consisting of organic photoconductive compositions, charge transfer complex compositions, dye sensitizers, or mixtures thereof, (5) an inorganic panchromatic photogenerating layer and (6) an polymeric overcoating layer.

Claim 5

An improved photoresponsive device in accordance with claim 1 wherein the substrate is conductive, and the adhesive layer is comprised of a polyester resin.

Claim 6

An improved photoresponsive device in accordance with claims 2 wherein the substrate is conductive, and the adhesive layer is comprised of a polyester resin.

Claim 7

An improved photoresponsive device in accordance with claim 1 wherein the photoconductive layer is comprised of an organic photoconductive material.

Claim 8

An improved photoresponsive device in accordance with claim 2 wherein the photoconductive layer is comprised of an organic photoconductive material.

Claim 9

An improved photoresponsive device in accordance with claim 5 wherein the organic photoconductive material is a phthalocyanine composition.

Claim 10

An improved photoresponsive device in accordance with claim 6 wherein the organic photoconductive material is a phthalocyanine composition.

Claim 11

An improved photoresponsive device in accordance with claim 7 wherein the phthalocyanine, is vanadyl phthalocyanine.

Claim 12

An improved photoresponsive device in accordance with claim 8 wherein the phthalocyanine is a metal free phthalocyanine.

Claim 13

An improved photoresponsive device in accordance with claim 7 wherein the phthalocyanine is chloroaluminum phthalocyanine chloride, or copper phthalocyanine.

Claim 14

An improved photoresponsive device in accordance with claim 8 wherein the phthalocyanine is copper phthalocyanine or orchloroaluminum phthalocyanine chloride.

Claim 15

An improved photoresponsive device in accordance with claim 5 wherein the organic photoconductive material is a squarylium composition of the formula: ##STR3## wherein R is hydrogen, an alkyl group and a hydroxy (OH) group.

Claim 16

An improved photoresponsive device in accordance with claim 6 wherein the organic photoconductive material is a squarylium composition of the formula: ##STR4## wherein R is selected from the group consisting of hydrogen, an alkyl group, and a hydroxy (OH) group.

Claim 17

An improved photoresponsive device in accordance with claim 13 wherein the squarylium composition is a hydroxy squarylium, a methyl squarylium or an unsubstituted squarylium.

Claim 18

An improved photoresponsive device in accordance with claim 14 wherein the squarylium composition is a hydroxy squarylium, a methyl squarylium or an unsubstituted squarylium.

Claim 19

An improved photoresponsive device in accordance with claim 1 wherein the inorganic photogenerating layer is selected from the group consisting of trigonal selenium and trigonal selenium doped with sodium carbonate, or sodium selenite.

Claim 20

An improved photoresponsive device in accordance with claim 2 wherein the photogenerating layer is trigonal selenium, trigonal selenium doped with sodium carbonate, and sodium selenite.

Claim 21

An improved photoresponsive device in accordance with claim 1 wherein the thickness of the adhesive layer is from about 0.01 microns to about 0.3 microns, the thickness of the photogenerating layer is from about 0.1 microns to about 10 microns, when the photogenerating layer contains from about 5 percent to about 100 percent by volume of photogenerating composition, and the thickness of the photoconductive layer is from about 0.1 microns to about 10 microns, when the photoconductive composition contains from about 5 percent to about 100 percent by volume of photoconductive composition.

Claim 22

An improved photoresponsive device in accordance with claim 2 wherein the thickness of the adhesive layer is from about 0.01 microns to about 0.3 microns, the thickness of the photogenerating layer is from about 0.1 microns to about 10 microns, when the photogenerating layer contains from about 5 percent to about 100 percent by volume of photogenerating composition, and the thickness of the photoconductive layer is from about 0.1 microns to about 10 microns, when the photoconductive composition contains from about 5 percent to about 100 percent by volume of photoconductive composition.

Claim 23

An improved photoresponsive device in accordance with claim 1 wherein the photogenerating layer is comprised of an inorganic photoconductive composition dispersed in a resinous binder, and the photoconductive layer is comprised of an organic photoconductive composition dispersed in a resinous binder.

Claim 24

An improved photoresponsive device in accordance with claim 2 wherein the photogenerating layer is comprised of an inorganic photoconductive composition dispersed in a resinous binder, and the photoconductive layer is comprised of an organic photoconductive composition dispersed in a resinous binder.

Claim 25

An improved photoresponsive device in accordance with claim 21 wherein the resinous binder for the photogenerating layer is a poly(hydroxyether), or a polyvinylcarbazole.

Claim 26

An improved photoresponsive device in accordance with claim 22 wherein the resinous binder for the photogenerating layer is a polyvinylcarbazole, or a poly(hydroxyether).

Claim 27

An improved photoresponsive device in accordance with claim 21 wherein the resinous binder for the photoconductive layer is a polycarbonate, a polyester, or polyvinylcarbazole.

Claim 28

An improved photoresponsive device in accordance with claim 22 wherein the resinous binder for the photoconductive layer is a polyester, a polycarbonate, or polyvinylcarbazole.

Claim 29

An improved photoresponsive device in accordance with claim 1 wherein the hole transport layer comprises molecules of the formula: ##STR5## dispersed in a highly insulating and transparent organic resinous material wherein X is selected from the group consisting of (ortho) CH 3 , (meta) CH 3 , (para) CH 3 , (ortho) Cl, (meta) Cl, (para) Cl.

Claim 30

An improved photoresponsive device in accordance with claim 2 wherein the hole transport layer comprises molecules of the formula: ##STR6## dispersed in a highly insulating and transparent organic resinous material wherein X is selected from the group consisting of (ortho) CH 3 , (meta) CH 3 , (para) CH 3 , (ortho) Cl, (meta) Cl, (para) Cl.

Claim 31

An improved photoresponsive device in accordance with claim 27 wherein the transport layer is comprised of N,N'-diphenyl-N,N'-bis(3-methylphenyl)-[1,1-biphenyl]-4,4'-diamine, and the resinous binder is polycarbonate having a molecular weight of from about 20,000 to about 100,000.

Claim 32

An improved photoresponsive device in accordance with claim 28 wherein the transport layer is comprised of N,N'-diphenyl-N,N'-bis(3-methylphenyl)-[1,1-biphenyl]-4,4'-diamine, and the resinous binder is a polycarbonate having a molecular weight of from about 20,000 to about 100,000.

Claim 33

An improved photoresponsive device in accordance with claim 25 wherein the resinous binder contains from about 10 percent by weight to about 75 percent by weight of the active molecules.

Claim 34

An improved photoresponsive device in accordance with claim 28 wherein the resinous binder contains from about 10 percent by weight to about 75 percent by weight of the active molecules.

Claim 35

An improved photoresponsive device in accordance with claim 27 wherein the hole transport layer is of a thickness of from about 5 microns to about 50 microns.

Claim 36

An improved photoresponsive device in accordance with claim 28 wherein the charge transport layer is of a thickness of from about 5 microns to about 50 microns.

Claim 37

An improved photoresponsive device in accordance with claim 1 wherein the polymeric overcoating is a polyester, polyvinylbutyal, a polycarbonate, or a phenoxy resin.

Claim 38

An improved photoresponsive device in accordance with claim 2 wherein the polymeric overcoating is a polyester, polyvinylbutyral, a polycarbonate, or a phenoxy resin.

Claim 39

An improved photoresponsive device in accordance with claim 1 wherein the substrate is indium-tin oxide.

Claim 40

An improved photoresponsive device in accordance with claim 2 wherein the substrate is indium-tin oxide.

Claim 41

An improved photoresponsive device in accordance with claim 8 wherein the phthalocyanine is vanadyl phthalocyanine.

Claim 42

An improved photoresponsive device in accordance with claim 7 wherein the phthalocyanine is a metal free phthalocyanine.

Claim 43

An improved photoresponsive device consisting essentially of (1) a supporting substrate, (2) an optional adhesive layer, (3) a hole transport layer containing molecules of the formula ##STR7## dispersed in a highly insulating and transparent organic resinous material, wherein X is selected from the group consisting or (ortho) CH 3 , (metal) CH 3 , (para) CH 3 , (ortho) Cl, (meta) Cl, (para) Cl, (4) an inorganic, pnchromatic photogenerating layer, (5) a photoconductive composition sensitive in the red or infrared region of the spectrum, which composition is selected from the group consisting of organic photoconductive compositions, charge transfer complex compositions, dye sensitizers, or mixtures thereof and (6) a polymeric overcoating layer selected from the group consisting of polyesters, polyvinylbutyral, polycarbonates, and phenoxy resins.

Claim 44

An improved photoresponsive device consisting essentially of (1) a supporting substrate, (2) an optional adhesive layer, (3) a hole transport layer containing molecules of the formula ##STR7## dispersed in a highly insulating and transparent organic resinous material, wherein X is selected from the group consisting or (ortho) CH 3 , (metal) CH 3 , (para) CH 3 , (ortho) Cl, (meta) Cl, (para) Cl, (4) an inorganic, pnchromatic photogenerating layer, (5) a photoconductive composition sensitive in the red or infrared region of the spectrum, which composition is selected from the group consisting of organic photoconductive compositions, charge transfer complex compositions, dye sensitizers, or mixtures thereof and (6) a polymeric overcoating layer selected from the group consisting of polyesters, polyvinylbutyral, polycarbonates, and phenoxy resins.

Claim 45

An improved photoresponsive device in accordance with claim 41, wherein the photoconductive composition is situated between the hole transport layer and the inorganic photogenerating layer.

Claim 46

An improved photoresponsive device in accordance with claim 41, wherein the polymeric overcoating is polyvinylbutyral.

Claim 47

An improved photoresponsive device in accordance with claim 43, wherein the polymeric overcoating is polyvinylbutryal.