Abstract: An electrophotographic imaging member comprising a support substrate having a two layered electrically conductive ground plane layer comprising a layer comprising zirconium over a layer comprising titanium, a hole blocking layer, an adhesive layer comprising a polymer blend comprising a carbazole polymer and a film forming thermoplastic resin selected from the group consisting of copolyester, polyarylate and polyurethane in contiguous contact with the hole blocking layer, a charge generation layer comprising perylene or a phthalocyanine pigment particles dispersed in a polycarbonate film forming binder in contiguous contact with the adhesive layer, and a hole transport layer, the hole transport layer being substantially non-absorbing in the spectral region at which the charge generation layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from the charge generation layer and transporting the holes through the charge transport layer.

Abstract: A flexible electrophotographic imaging member is disclosed which comprises a flexible substrate having an electrically conductive surface, a hole blocking layer comprising an aminosilane reaction product, an adhesive layer having a thickness between about 200 angstroms and about 900 angstroms consisting essentially of at least one copolyester resin having the following formula: ##STR1## wherein the diacid is selected from the group consisting of terephthalic acid, isophthalic acid, and mixtures thereof, the diol comprises ethylene glycol, the mole ratio of diacid to diol is 1:1, n is a number between about 175 and about 350 and the T.sub.g of the copolyester resin is between about 50.degree. C. to about 80.degree. C.

Abstract: An electrophotographic imaging member is disclosed having an imaging surface adapted to accept a negative electrical charge, the electrophotographic imaging member comprising a metal ground plane layer comprising zirconium, a hole blocking layer, a charge generation layer comprising photoconductive particles dispersed in a film forming resin binder, and a hole transport layer, the hole transport layer being substantially non-absorbing in the spectral region at which the charge generation layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from the charge generation layer and transporting the holes through the charge transport layer.

Abstract: A process for preparing an electrophotographic imaging member comprising providing a photogenerating layer on a supporting substrate and applying a charge transport layer forming mixture to the photogenerating layer, the charge transport layer forming mixture comprising a charge transporting aromatic amine compound of one or more compounds having the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are an aromatic group selected from the group consisting of a substituted or unsubstituted phenyl group, naphthyl group, and polyphenyl group and R.sup.

Abstract: Disclosed for incorporation in imaging members are novel aromatic ether compositions of the formula R--X--R.sub.1, wherein R and R.sub.1 are independently selected from arylamino and substituted arylamino groups, and X is selected from the group consisting of oxygen, sulfur, selenium, and tellurium. Also disclosed are photoresponsive imaging devices containing a photogenerating layer and in contact therewith a hole transport layer comprised of the aromatic ethers illustrated herein.

Abstract: An electrostatographic imaging member comprising at least one imaging layer capable of retaining an electrostatic latent image, a supporting substrate layer having an electrically conductive surface, and an electrically conductive ground strip layer adjacent the electrostatographic imaging layer and in electrical contact with the electrically conductive layer, the electrically conductive ground strip layer comprising a film forming binder, conductive particles and crystalline particles dispersed in the film forming binder and a reaction product of a bi-functional chemical coupling agent with both the film forming binder and the crystalline particles. This imaging member may be employed in an electrostatographic imaging process.

Abstract: An imaging member comprising at least one flexible electrophotographic imaging layer, a flexible supporting substrate layer having an electrically conductive surface and an anti-curl layer, the anti-curl layer comprising a film forming binder, crystalline particles dispersed in the film forming binder and a reaction product of a bi-functional chemical coupling agent with both the film forming binder and the crystalline particles. This imaging member may be employed in an electrostatographic imaging process.

Abstract: A process for the preparation of pigments of high purity which comprises reacting in the presence of an organic solvent an appropriate impure pigment with an organic acid of the formula R-X, or comprises reacting an appropriate impure pigment with an organic acid of the formula R-X, and subsequently adding an organic solvent to the resulting organic mixture, adding a precipitating agent to the resulting solution mixture, followed by separation of the desired pure pigment from the reaction mixture, wherein R is an alkyl group, containing from about 4 carbon atoms to about 22 carbon atoms, or an aryl group containing from about 6 carbon atoms to about 24 carbon atoms, and X is a group capable of yielding anions.

Abstract: Squaraine compositions of the following formula ##STR1## wherein Ar is selected from the moieties specified in the specification are useful for incorporation into layered photoresponsive devices.

Abstract: This invention is directed to an improved photoresponsive device comprised of a substrate, a hole transport layer, an adhesive layer, an organic photoconductive layer sensitive to infrared radiation, an inorganic photogenerating layer, and an optional polymeric overcoating layer.

Abstract: An improved photoresponsive device comprised in the order stated of (1) a supporting substrate, (2) a photoconductive layer comprised of squaraine compositions of the following formula: ##STR1## wherein Ar is selected from the moieties specified resulting in the following -squaraines:I. bis-9-(8-hydroxyjulolidinyl)squaraine ##STR2## II. bis-9-(8,10-dihydroxyjulolidinyl)squaraine ##STR3## III. bis(4-dimethylamino-2-methylthiophenyl)squaraine ##STR4## and IV. bis(2,6-dihydroxy-4-dimethylaminophenyl)squaraine ##STR5## and (3) a diamine hole transport layer.

Abstract: This invention is directed to an improved photoresponsive device comprised of a substrate, a hole blocking layer, an optional adhesive layer, an inorganic photogenerating layer, an organic photoconductive layer sensitive to infra-red radiation, and a top coating of a hole transport layer. More specifically, the present invention is directed to an improved photoresponsive device comprised in the order stated of the following layers: (1) a conductive substrate, (2) a metal oxide hole blocking layer, (3) an adhesive layer, (4) an inorganic photogenerating layer, (5) a photoconductive composition capable of enhancing or reducing the intrinsic properties of the photogenerating layer, which composition is selected from the group consisting of organic photoconductive compositions, charge transfer complex compositions, sensitizers, or mixtures thereof, and (6) a hole transport layer.

Abstract: An imaging member which is comprised of a substrate, an injecting contact, or hole injecting electrode overlaying the substrate, a charge transport layer comprised of an electrically inactive organic resin having dispersed therein an electrically active material, a combination of which is substantially non-absorbing to visible electromagnetic radiation but allows the injection of photogenerated holes from a charge generator layer in contact with the injecting contact and electrically induces holes from the layer of injecting material, a layer of charge generator material on and in operative connection with the charged transport layer and finally a layer of insulating organic resin overlaying the layer of charge generating material. The hole injecting electrode includes materials such as trigonal selenium, selenium dioxide, arsenic, tellurium, and alloys of selenium such as arsenic-selenium-tellurium.

Abstract: An imaging member comprising a layer of particulate photoconductive material dispersed in an organic resinous binder, said photoconductive material comprising trigonal selenium containing a mixture of an alkaline earth metal selenite and an alkaline earth metal carbonate. This layer can be the charge generation layer of an imaging member also having a charge transport layer in contact therewith.

Abstract: An imaging member comprising a layer of particulate photoconductive material dispersed in an organic resinous binder, said photoconductive material comprising trigonal selenium containing a mixture of an alkali metal selenite and an alkali metal carbonate. This layer can be the charge generation layer of an imaging member also having a charge transport layer in contact therewith.

Abstract: An imaging member comprising a first layer of electrically active charge transport material contained on a supporting substrate, a photoconductive layer overlying said active layer, and a second layer of electrically active charge transport material overlying said photoconductive layer, said photoconductive layer exhibiting the capability of photogeneration of charge carriers and injection of said charge carriers, one of said electrically active layers which comprises an electrically inactive resinous material made electrically active by the addition of certain activating compounds thereto exhibits the capability of facile hole injection and transport and the other electrically active layer exhibits the capability of facile electron injection and transport.

Abstract: An imaging member comprising a first layer of electrically active charge transport material contained on a supporting substrate, a photoconductive layer overlying said active layer, and a second layer of electrically active charge transport material overlying said photoconductive layer, said photoconductive layer exhibiting the capability of photogeneration of charge carriers and injection of said charge carriers, one of said electrically active layers which comprises an electrically inactive resinous material made electrically active by the addition of certain activating compounds thereto exhibits the capability of facile hole injection and transport and the other electrically active layer exhibits the capability of facile electron injection and transport.

Abstract: An imaging member comprising a first layer of electrically active charge transport material contained on a supporting substrate, a photoconductive layer overlying said active layer, and a second layer of electrically active charge transport material overlying said photoconductive layer, said photoconductive layer exhibiting the capability of photogeneration of charge carriers and injection of said charge carriers, one of said electrically active layers which comprises an electrically inactive resinous material made electrically active by the addition of certain activating compounds thereto exhibits the capability of facile hole injection and transport and the other electrically active layer exhibits the capability of facile electron injection and transport.

Abstract: An imaging member comprising a first layer of electrically active charge transport material contained on a supporting substrate, a photoconductive layer overlying said active layer, and a second layer of electrically active charge transport material overlying said photoconductive layer, said photoconductive layer exhibiting the capability of photogeneration of charge carriers and injection of said charge carriers, one of said electrically active layers which comprises an electrically inactive resinous material made electrically active by the addition of certain activating compounds thereto exhibits the capability of facile hole injection and transport and the other electrically active layer exhibits the capability of facile electron injection and transport.

Abstract: An imaging member comprising a first layer of electrically active charge transport material contained on a supporting substrate, a photoconductive layer overlaying said active layer, and a second layer of electrically active charge transport material overlaying said photoconductive layer.