Abstract: A process for preparing vanadyl phthalocyanine particles for photoresponsive devices.

Abstract: An electrophotographic imaging member is described comprising a substrate, a charge transport layer, a thin continuous interface layer consisting essentially of halogen doped selenium, and at least one selenium-tellurium alloy photoconductive charge generating layer. This electrophotographic imaging member may contain other layers such as a thin protective overcoating layer suitable for Carlson type imaging processes. An electrophotographic imaging process employing this electrophotographic imaging member is also described.

Abstract: An imaging method comprising providing a migration imaging member comprising a substrate and an electrically insulating softenable layer on the substrate, the softenable layer comprising migration marking material located at least at or near the surface of the softenable layer spaced from the substrate and a charge transport material in the softenable layer, electrostatically charging the member, exposing the member to activating radiation in an imagewise pattern, decreasing the resistance to migration of marking material in the softenable layer sufficiently to allow slight migration in depth of marking material towards the substrate in image configuration, and further decreasing the resistance to migration of marking material in the softenable layer sufficiently to allow nonmigrated marking material to agglomerate.

Abstract: This invention relates to a migration imaging member comprising a substrate and an electrically insulating softenable layer on said substrate, said softenable layer comprising migration marking material located at least at or near the surface of said softenable layer spaced from said substrate and a charge transport molecule.

Abstract: A welded web comprising a first edge of a web having at least one aperture overlapping a second edge of a web comprising thermoplastic material on an exposed surface along the second edge to form a region of contiguous contact between the first edge and the second edge, at least a portion of the thermoplastic material at least partially filling the aperture thereby bonding the first edge to the second edge.

Abstract: A process for synthesizing a squariane composition comprising forming a mixture comprising squaric acid, a long chain primary alcohol and a tertiary amine and heating the mixture in vacuo below the boiling points of the primary alcohol and the tertiary amine to form the squariane composition.

Abstract: An unsymmetrical squaraine composition, process for synthesizing the unsymmetrical squaraine composition, devices containing the unsymmetrical squaraine composition, and methods of using the devices. The process for synthesizing the unsymmetrical squaraine composition comprises forming a mixture comprising squaric acid, a long chain primary alcohol, a first tertiary amine, and a second tertiary aromatic amine different from the first tertiary aromatic amine, and heating the mixture in vacuo below the boiling points of the primary alcohol, the first tertiary amine and the second tertiary aromatic amine to form an unsymmetrical squaraine composition. The novel unsymmetrical squaraine composition synthesized by this process may be used in electrostatographic imaging members comprising a supporting substrate and a photoconductive layer comprising the novel unsymmetrical squaraine composition. These electrostatographic imaging members may be utilized in an electrostatographic imaging processes.

Abstract: At least one ribbon-like stream of a first coating composition adjacent to and in edge contact with at least one second ribbon-like stream of a second coating composition are deposited on the surface of a support member by establishing relative motion between the surface of the support member and the ribbon-like streams, simultaneously constraining and forming the ribbon-like streams parallel to and closely spaced from each other, contacting adjacent edges of the ribbon-like streams prior to applying the ribbon-like streams to the surface of the support member and thereafter applying the ribbon-like streams to the surface of the support member.

Abstract: An electrophotographic imaging system utilizing a member comprising at least one photoconductive layer and an overcoating layer comprising a film forming continuous phase comprising charge transport molecules and finely divided charge injection enabling particles dispersed in the continuous phase, the insulating overcoating layer being substantially transparent to activating radiation to which the photoconductive layer is sensitive and substantially electrically insulating at low electrical fields.

Abstract: A method of forming an alloy layer on the surface of a substrate comprising forming in a vessel a molten bath comprising at least one vaporizable alloying component having a higher vapor pressure than at least one other vaporizable alloying component in said bath, forming a thin, substantially inert, liquid layer of an evaporation retarding film on the upper surface of said molten bath, said liquid layer of an evaporation retarding film having a lower or comparable vapor pressure than both said vaporizable alloying component having a higher vapor pressure and said other vaporizable alloying component on said substrate, co-vaporizing at least a portion of both said vaporizable alloying component having a higher vapor pressure and said other vaporizable alloying component whereby said evaporation retarding film retards the initial evaporation of said vaporizable alloying component having a higher vapor pressure, and forming an alloy layer comprising both said vaporizable alloying component having a higher vapor

Abstract: An electrophotographic imaging member is produced by providing a photoconductive layer and depositing thereon a solution of polycarbonate and substituted N,N'-diphenyl-N,N'-bis(alkyl phenyl)-[1,1'-biphenyl]-4,4' diamine in a halogenated hydrocarbon solvent and a halogen-free organic solvent having a boiling point greater than the boiling point of the halogenated hydrocarbon solvent to provide a charge transport layer when solvents are removed.

Abstract: An electroforming process comprising providing a core mandrel having an electrically conductive, adhesive outer surface, a coefficient of expansion of at least about 8.times.10.sup.-5 in./in./.degree.F., a segmental cross-sectional area of less than about 1.8 square inches and an overall length to segmental cross-sectional area ratio greater than about 0.6, establishing an electroforming zone between an anode selected from a metal and alloys thereof having a coefficient of expansion of between about 6.times.10.sup.-6 in./in./.degree.F. and about 10.times.10.sup.-6 in./in./.degree.F.

Abstract: An imaging member comprising a substrate, an electrically insulating swellable, softenable layer on the substrate, the softenable layer having particulate migration marking material located at least at or near the surface of the softenable layer spaced from the substrate, and a protective overcoating comprising a film-forming resin, a portion of which extends beneath the surface of the softenable layer. This migration imaging member may be prepared with the aid of a material which swells at least the surface of the softenable layer to allow the film-forming resin to penetrate beneath the surface of the softenable layer.

Abstract: An electrostatographic imaging system comprising an insulating layer having an imaging surface, a conductive substrate for the insulating layer, means to form an electrostatic latent image on the imaging surface, means to form a toner image on the imaging surface in conformance to the electrostatic latent image and means to supply a variable direct current voltage to the conductive substrate. The electrostatographic imaging system may include an electrically conductive member parallel to and spaced from the imaging surface and a means to supply a variable electrical bias to the electrically conductive member in response to a change in the value of direct current voltage supplied to the conductive substrate.

Abstract: There is disclosed a process for the production of unsymmetrical, substituted diarylamines by the reaction of a primary aromatic amine and a substituted phenol wherein the phenol is held in excess of the primary aromatic amine thereby minimizing by-product formation as a result of self-condensation of the primary arylamine. The desired secondary amine is produced in high yield and purity by recycling the unreacted phenol.

Abstract: A process for depositing particles within a softenable layer to form a migration imaging member wherein the layer is softened by heating, exposed in a first deposition zone to a high impingement rate of vapors of selenium or selenium alloy moving along in a line of sight path from a selenium or selenium alloy source to form a sub-surface monolayer of spherical particles comprising the selenium or selenium alloy, removed from the first deposition zone prior to a substantial dropoff in transmission optical density, exposed to a lower impingement rate of vapors of selenium or selenium alloy in a second deposition zone to increase the size of the spherical particles while maintaining a narrow particle size distribution and achieving a high surface packing density thereby increasing the transmission optical density of the imaging member, and thereafter removed from the second deposition zone prior to a substantial dropoff in transmission optical density.

Abstract: An electrostatographic imaging member having two electrically operative layers including a charge transport layer and a charge generating layer, the electrically operative layers overlying a siloxane film coated on a metal oxide layer of a metal conductive anode, said siloxane film comprising a reaction product of a hydrolyzed silane having the following general formula: ##STR1## wherein R.sub.1 is an alkylidene group containing 1 to 20 carbon atoms, and R.sub.2 and R.sub.3, are independently selected from the group consisting of H, a lower alkyl group containing 1 to 3 carbon atoms, a phenyl group, and a poly(ethylene-amino) group, said siloxane having reactive OH and ammonium groups attached to silicon atoms.

Abstract: A toner and development process involving electrostatic development without carrier is disclosed. The toner of the invention is effectively transferred from photoreceptors to plain paper after development. The toner is formed of a combination of an insulating toner and a conductive toner that are triboelectrically active with respect to each other.

Abstract: A process for forming an overcoated electrophotographic imaging member by applying a coating of a cross-linkage siloxanol-colloidal silica hybrid material on an electrophotographic imaging member and thereafter contacting the coating with a fugitive ammonia gas condensation catalyst until the siloxanol-colloidal silica hybrid material forms a cross-linked solid layer. The cross-linkable siloxanol-colloidal silica hybrid material may be prepared by hydrolyzing trifunctional organosilanes and stabilizing the hydrolyzed silanes with colloidal silica. The electrophotographic imaging member may comprise inorganic or organic photoconductive components in one or more layers.

Abstract: An electrophotographic light-sensitive member comprising a conductive support, a photoconductive layer and a protective outer layer, the protective outer layer comprising at least one particulate metal oxide having a mean particle size below about 0.3 .mu.m dispersed in an organic resin binder material. The electrophotographic light-sensitive member may be prepared by initially forming the protective outer layer and thereafter applying the photoconductive layer and conductive support thereto.