Abstract: Disclosed is an imaging member which comprises a conductive substrate, a photogenerating material, and a binder which comprises a polymer of the formulae I, II, III, IV, V, VI, VII, VIII, IX, or X as further defined herein.

Abstract: A system for cleaning a substrate comprising bringing a contact cleaning web into moving synchronous contact with the surface of a member to be cleaned to clean the surface.

Abstract: An overcoating for an electrophotographic imaging member includes an amorphous fluoropolymer overcoating layer.

Abstract: An electrophotographic imaging member is disclosed including 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 copolyester film forming resin, an intermediate layer over and in contact with the adhesive layer, the intermediate layer comprising a carbazole polymer, a charge generation layer comprising a perylene or a phthalocyanine, and a hole transport layer, said 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 said charge generation layer and transporting said holes through said charge transport layer.

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 thermoplastic polyurethane film forming resin, a charge generation layer comprising perylene or a phthalocyanine particles dispersed in a polycarbonate film forming binder, and a hole transport layer, said 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 said charge generation layer and transporting said holes through said charge transport layer.

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: An electrophotographic imaging member comprising a support substrate having a two layered electrically conductive outer surface, a hole blocking layer, an adhesive layer comprising a copolyester resin, a charge generation layer comprising photoconductive perylene or phthalocyanine particles dispersed in a film forming resin binder blend comprising polyvinyl butyral copolymer and a copolyester selected from the group consisting of a first copolyester, a second copolyester and mixtures thereof, and a charge transport layer.

Abstract: An electrophotographic imaging member comprising a support substrate having a two electrically conductive ground plane layer comprising a layer comprising zirconium over a layer comprising titanium,a hole blocking layer, an adhesive layer comprising a copolyester film forming resin, an intermediate layer in contact with said adhesive layer, said intermediate layer comprising a film forming carbazole polymer, a charge generation layer comprising perylene or a phthalocyanine particles dispersed in a film forming polymer binder blend of polycarbonate and carbazole polymer, and a hole transport layer, said 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 said charge generation layer and transporting said holes through said charge transport layer.

Abstract: Disclosed are marking materials containing retroreflective fillers and processes for the use thereof. In one embodiment, images containing retroreflective fillers are generated on paper by any suitable means, such as electrostatic imaging and development with either dry or liquid developers, ink jet printing, strip-out development processes, or the like, and the images thus generated are used to control a document reproduction system. In another embodiment, images containing retroreflective fillers are generated on a movable part in an imaging apparatus, such as an imaging member, an intermediate transfer member, or the like, by any suitable means, and the images thus generated are used to impart information regarding the relative position of the movable part with respect to the copier or printer containing the movable part.

Abstract: An electrophotographic printing machine having an imaging member with a surface adapted to move along a preselected path in a process direction, the electrophotographic printing machine includes a charge control system, incorporating charging device for applying different voltage potentials on the imaging surface in the process direction. An exposure system is provided for discharging each of the different voltage potentials with different exposure levels in a second direction substantially perpendicular to the process direction to form segments having different voltage potentials. The charging device has a coronode wire and a screen or grid wires. The charging device acts as a constant voltage charging device and, in fact, acts as an indicator of the potentials voltage on the photoreceptor. An array of electrostatic voltmeter (ESV) provides a second voltage potentials measurements to complete the requirements to estimate the electrical parameter.

Abstract: A flexible electrostatographic imaging belt comprising a support layer, a coating including a film forming polymer, and a permanent skewed seam. The electrostatographic imaging belt may be fabricated by providing a sheet having a parallelogram shape with slanted ends, the sheet having a first major exterior surface opposite and parallel to a second major exterior surface, overlapping an edge of the first major exterior surface adjacent a first of the slanted ends onto an edge of the second major exterior surface of adjacent a second slanted of the ends to form a skewed seam, and securing the ends to each other to form a permanent skewed seam. This skewed seam electrostatographic imaging belt may be used in an electrostatographic imaging process.

Abstract: Disclosed is a process for forming thin films of pigment compounds, comprising providing a solubilized pigment-Lewis acid complex contained in an aprotic organic solvent system and coating the solubilized pigment-Lewis acid complex containing solvent system on a substrate.

Abstract: A method of controlling variations in electrical characteristics in electrophotographic imaging devices by eliminating the effect of acidic or basic impurities in a photoconductive element. A solution of a weak acid or weak base and a conjugate salt of the weak acid and the weak base is incorporated into a layer of the photoconductive element. In a process for producing the photoconductive element, a substrate is coated with a first dispersion to form a charge generating layer, and then coated with a second dispersion to form a charge transporting layer, wherein there is incorporated in at least one of the first and second dispersions a solution of a weak acid or weak base and the conjugate salt of the weak acid and weak base in an amount effective to reduce variations in the dark development potential (V.sub.DDP) and background potential (V.sub.BG) characteristics of the imaging devices.

Abstract: A layered photosensitive imaging member is modified by forming a low-reflection layer on the ground plane. The low-reflection layer serves to reduce an interference fringe contrast and according to a second aspect of the invention, layer adhesion is greatly improved when selecting TiO.sub.2 as the low-reflection material. In a preferred embodiment, low-reflection materials having index of refraction greater than 2.05 were found to be most effective in suppressing the interference fringe contrast.

Abstract: A layered photosensitive imaging member is modified to reduce the effects of interference within the member caused by reflections from coherent light incident on a base ground plane. The modification described is to form the ground plane surface with a rough surface morphology by various selective deposition methods. In one method the metal forming the ground plane is deposited through a fine mesh screen which is either held stationary during a single pass or alternatively vibrated at a specific frequency during a single pass of deposition. Light reflected from the ground plane formed with the rough surface morphology is diffused through the bulk of the photosensitive layer breaking up the interference fringe patterns which are later manifested as a plywood pattern on output prints made from the exposed sensitive medium.

Abstract: A charge generating layer for an electrophotographic imaging member is provided containing trigonal selenium and phthalocyanine photoconductive particles dispersed in a film forming polymer binder. The film forming polymer binder may be a styrene butadiene copolymer having a weight percent styrene to butadiene content of about 85:15 to about 95:5 and a glass transition temperature range of about 50.degree. C. to about 60.degree. C. A process for producing the homogeneous dispersion of photoconductive particles includes separately milling the trigonal selenium particles and the phthalocyanine particles to approprite particle sizes, and dispersing the separately milled particles in the film forming polymer binder.

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.