Abstract: An improved layered photoresponsive imaging device consisting of(1) a supporting substrate,(2) a photogenerating layer comprised of a charge carrier photogenerating pigment dispersed in a resinous binder,(3) a hole carrier transport layer, comprised of molecules of the formula ##STR1## dispersed in a highly insulating and transparent organic resinous material, wherein an X is selected from the group consisting of (ortho) CH.sub.3, (meta) CH.sub.3, (para) CH.sub.3, (ortho) Cl, (meta) Cl, (para) Cl, and a hole injecting electrode strip comprised of carbon black particles and graphite particles dispersed in a resinous binder, which strip is attached to and extends the length of the non-image areas of the hole carrier transport layer.

Abstract: Disclosed is a layered photosensitive device which can be used in an electrophotographic imaging system, this device comprising a substrate which can be conductive or nonconductive, a hole injecting layer capable of injecting positive charges or holes into a layer on its surface, comprised of trigonal selenium, alloys of selenium-tellurium or nickel selenide, a combined or separate transport and generating layer in operative contact with the layer of hole injecting material such layer in one embodiment being comprised of an inorganic or organic photoconductive materials, and as an optional layer an insulating resin overlaying the photoconductive layer. Examples of materials useful as the transport-generating layer include selenium, arsenic-selenium alloys, metal phthalocyanines, metal free phthalocyanines. Also certain types of diamine compounds can be used as the transport layer.

Abstract: This invention is directed to a layered organic photoresponsive device, and a method of highlight color imaging, the device being comprised of (1) a supporting substrate, (2) a layer of material capable of injecting holes into a layer on its surface, this layer being comprised of a material selected from the group consisting of carbon dispersed in a polymer, and graphite dispersed in a polymer, (3) a hole transport layer in operative contact with the layer of hole injecting material, which transport layer comprises a combination of a highly insulating organic resin having dispersed therein small molecules of an electrically active material, the combination of which is substantially nonabsorbing to visible light but allows injection of photogenerated holes from a photogenerating layer in contact with the hole transport layer, and electrically induced holes from the layer of injecting material, (4) a red sensitive charge carrier photogenerating layer sensitive to wavelengths ranging from about the visible range

Abstract: Disclosed is an adhesive generating layer for use in an overcoated photoreceptor system, this layer containing a generating pigment dispersed in a copolymer of a siloxane and a dihydroxy compound of the formula: ##STR1## wherein R and R' are independently selected from the group consisting of alkyl, substituted alkyl, alkenes, substituted alkenes, aryl and substituted aryl; Y is a dihydroxy radical; and n is a number of sufficient value that the average molecular weight of the resulting silicone copolymer is between about 2,000 and 250,000. Examples of copolymers include those wherein R and R' are alkyl groups such as methyl and Y is a biphenol such as 2,2-bis-(4-hydroxy phenyl)-propane, one preferred material being a methyl octyl siloxane 2,2-bis-(4-hydroxy phenyl)-propane copolymer.

Abstract: This invention relates to an electrophotographic imaging member or device and an imaging method using this imaging member, which member or device is comprised of a substrate, a layer of a charge carrier injecting material comprised of carbon or graphite dispersed in a polymer, a layer of a charge carrier transport material, a layer of a photoconductive charge carrier generating material and an electrically insulating overcoating layer.

Abstract: This invention relates to an electrophotographic imaging member or device and an imaging method using this imaging member, which member or device is comprised of a substrate, a layer of a charge carrier injecting material comprised of carbon or graphite dispersed in a polymer, a layer of a charge carrier transport material, a layer of a photoconductive charge carrier generating material and an electrically insulating overcoating layer.

Abstract: Disclosed is an adhesive generating layer for use in an overcoated photoreceptor system, this layer containing a generating pigment dispersed in a copolymer of a siloxane and a dihydroxy compound of the formula: ##STR1## wherein R and R' are independently selected from the group consisting of alkyl, substituted alkyl, alkenes, substituted alkenes, aryl and substituted aryl; Y is a dihydroxy radical; and n is a number of sufficient value that the average molecular weight of the resulting silicone copolymer is between about 2,000 and 250,000. Examples of copolymers include those wherein R and R' are alkyl groups such as methyl and Y is a biphenol such as 2,2-bis-(4-hydroxy phenyl)-propane, one preferred material being a methyl octyl siloxane 2,2-bis-(4-hydroxy phenyl)-propane copolymer.

Abstract: Disclosed is a layered photosensitive device for use in electrostatographic copying. The device comprises:(a) an electrically conductive substrate;(b) a layer of material capable of injecting holes into a layer on its surface;(c) a hole transport layer in operative contact with the layer of hole injecting material which transport layer comprises a combination of a highly insulating organic resin having dispersed therein small molecules of an electrically active material, the combination of which is substantially non-absorbing to visible light but allows injection of photogenerated holes fom a charge generator layer in contact with said hole transport layer and electrically induced holes from the layer of injecting material;(d) a layer of a charge generating photoconductive material on and in operative contact with the charge transport layer; and(e) a layer of an insulating organic resin overlaying the layer of charge generating material.

Abstract: Waterless lithographic printing masters of improved contrast are provided by a coating suitable master substrate with a silicone elastomer gum having reactive pendant hydroxyl or amino groups, reacting a photo and/or thermally reactive azide with said pendant groups, depositing a particulate image pattern on said silicone comprising a thermoplastic organohydrocarbon polymer and crosslinking said silicone and chemically bonding said organohydrocarbon to said silicone to form a durable imaged waterless lithographic printing master.

Abstract: Disclosed is a microimaging composition which comprises a film of an organic polymer as a matrix material having uniformly dispersed therein:I. a photochemically reactive organo diselenide characterized by the formula:R.sub.1 --Se--Se--R.sub.2wherein R.sub.1 and R.sub.2 are aralkyl or alkyl hydrocarbon moieties;Ii. a tertiary phosphine or phosphite characterized by the formula: ##STR1## wherein each n is 0 in the case of a phosphine and 1 in the case of a phosphite and R.sub.3, R.sub.4 and R.sub.5 are independently substituted or unsubstituted aryl hydrocarbon moieties; andIii. an organic peroxide characterized by the formula: ##STR2## wherein R.sub.6 and R.sub.7 are aryl or substituted aryl.

Abstract: Disclosed is an imaging method which comprises:A. providing a film of an organic polymer as matrix material having uniformly dispersed therein:I. a photochemically reactive organo diselenide characterized by the formula:R.sub.1 --Se--Se--R.sub.2wherein R.sub.1 and R.sub.2 are aralkyl or alkyl hydrocarbon moieties;Ii. a tertiary phosphine or phosphite characterized by the formula: ##STR1## wherein each n is 0 in the case of phosphine and 1 in the case of a phosphite and R.sub.3, R.sub.4 and R.sub.5 are independently substituted or unsubstituted aryl hydrocarbon moieties; andIii. an organic peroxide characterized by the formula: ##STR2## wherein R.sub.6 and R.sub.7 are aryl or substituted aryl; B. EXPOSING THE FILM IN AN IMAGEWISE MANNER TO ULTRAVIOLET RADIATION TO FORM AN IMAGE THEREIN; ANDC. heating the exposed film to a temperature of at least about 100.degree. C for a time sufficient to enhance the image contrast.

Abstract: Process for preparation of transparencies from a solid phase dispersion of photoconductive particles in an insulating binder matrix. In this process, a dispersion is initially formed from an insulating polymer resin and an organoselenium compound capable of undergoing selective decomposition in response to an appropriate stimulus, whereby elemental selenium is extruded from said organoselenium compound and deposited within the polymeric resin. As a result of this deposition of elemental selenium within the insulating layer, the layer is rendered photoresponsive and can be used in conventional electrophotographic processes. Subsequent to the development and fusion of a developer image on this imaging member, the extrusion/deposition reaction can be reversed and the selenium deposit erased thus leaving a toner image fused to a substantially transparent polymeric film.

Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.

Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.

Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.

Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.

Abstract: Method for in situ preparation of photoconductive composite having an electronically active hole transport layer, an electronically active electron transport layer and a layer of charge transfer complex sandwiched therebetween. According to this method, a film containing either an electron donor or an electron acceptor is initially formed directly on a supportive (preferably conductive) substrate. After this film has been allowed to set, a second film is solvent coated on the previously formed film. The solvent used in preparation of the second film causes softening of the previously formed layer which permits interaction of an electron acceptor or an electronic donor in the casting solvent with an electron acceptor or an electron donor of the previously formed layer, thereby forming a charge transfer complex at the interface of these two films. Only a portion of the donor and acceptor interact along this common boundary during the formation of the photoconductive composite.

Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organoselenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.

Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.

Abstract: Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organoselenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.