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 electrostatographic imaging structure is provided having at least one distinct outer layer including a rotary drum having an outer peripheral surface, a retainer either separate from or a part of the drum or a hold down mechanism, and a photosensitive member held down to the peripheral surface of the drum by the retainer or hold down mechanism.

Abstract: A method of fabricating a cylindrical device comprising having at least one distinct outer layer comprising providing a preformed rigid cylindrical support drum having a predetermined outer circumference, a first end and a second end, providing a flexible belt having an inner circumference at least about 0.05 percent smaller than the outer circumference of the support drum, circumferentially expanding the belt with a flowing fluid under pressure until the circumference of the inner surface of the belt adjacent the first end is stretched to a new dimension at least about 0.

Abstract: A corona generating device of the type having a conductive shield partially surrounding a corona discharge electrode is provided with heating element. The heating element raises the surface temperature of the conductive shield to reduce or eliminate the adsorption of corona effluents and thereby minimize or prevent copy quality defects.

Abstract: An electrophotographic imaging member is disclosed comprising a substrate, a hole blocking, an optional interface adhesive layer, a charge generating layer, and a charge transport layer, the hole blocking layer comprising a light absorbing material selected from the group consisting of a dye, pigment and mixtures thereof dissolved or dispersed in a hole blocking matrix comprising a film forming polymer, the light absorbing material being capable of absorbing incident radiation having a wavelength between about 550 and about 950 nm. The dye or pigment may have a violet, blue, green, cyan or black color. These imaging members may be employed in an electrophotographic imaging process utilizing monochromatic activating radiation having a wavelength between a lower limit of 600 about and an upper limit of about 800 nm to form an electrostatic latent image on the imaging member.

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: An electrophotographic imaging member including a substrate, an optional blocking layer, an optional thermoplastic adhesive interface layer, a thin charge generation layer comprising pigment particles dispersed in a film forming polymer binder having dissolved or molecularly dispersed therein an electron accepting/transporting compound, and a charge transport layer.

Abstract: An electrophotographic imaging member is characterized by a cross-linked adhesive layer and a charge generating layer applied onto the adhesive layer by solution coating.

Abstract: In an electrophotographic imaging device, the solvent used to coat charge transport materials is a solvent to which an underlying adhesive layer is substantially insensitive. The adhesive layer may, for example, be formed of cross-linked film-forming polymers which are insoluble in a solvent used to apply the charge transport layer.

Abstract: A method of fabricating a cylindrical device comprising having at least one distinct outer layer comprising providing a preformed rigid cylindrical support drum having a predetermined outer circumference, a first end and a second end, providing a flexible belt having an inner circumference at least about 0.05 percent smaller than the outer circumference of the support drum, circumferentially expanding the belt with a flowing fluid under pressure until the circumference of the inner surface of the belt adjacent the first end is stretched to a new dimension at least about 0.

Abstract: An electrophotographic imaging member containing a supporting substrate having an electrically conductive surface comprising charge injecting material, a charge blocking layer including a water insoluble high molecular weight unmodified hydroxy methacrylate polymer and at least one photoconductive layer, the charge blocking layer having a surface resistivity greater than about 10.sup.10 ohm/sq. This imaging member may be employed in an electrostatographic imaging process.

Abstract: An electrostatographic imaging member is disclosed including a supporting substrate, at least one electrically conductive layer, and at least one electrostatographic imaging layer capable of retaining an electrostatic latent image, wherein at least one electrically conductive layer of the imaging member includes an electrically conductive polymer. The electrically conductive layer may be a conductive ground plane, a ground strip layer and/or a conductive anti-curl back coating.

Abstract: An electrophotographic imaging member including a substrate, a hole blocking adhesive layer, a charge generating layer and a charge transport layer, the hole blocking adhesive layer including a polyester film forming binder having dispersed therein a particulate reaction product of metal oxide particles and a hydrolyzed reactant selected from the group consisting of a nitrogen containing organo silane, an organotitanate and an organozirconate and mixtures thereof. Preferably, the electrophotographic imaging member is free of any distinct adhesive layer in contiguous contact with the hole. blocking adhesive layer. This imaging member may be utilized in an electrophotographic imaging process.

Abstract: An electrophotographic imaging member comprising a substrate having an electrically conductive metal oxide surface, a hole blocking layer and at least one electrophotographic imaging layer, the hole blocking layer comprising a reaction product of(a) a material selected from the group consisting of a hydrolyzed organozirconium compound, a hydrolyzed organotitanium compound and mixtures thereof,(b) a hydroxyalkylcellulose,(c) a hydrolyzed organoaminosilane, and(d) the metal oxide surface.

Abstract: A process including providing at least two support members maintained at a predetermined distance from each other, encircling the support members with at least one loosely hanging preformed flexible seamless carrier support sleeve having a predetermined outer circumference, encircling the seamless carrier support sleeve with a flexible belt having an inner circumference substantially same as or less than the predetermined outer circumference of the seamless carrier support sleeve, and increasing the distance between the support members to stretch the flexible belt, the size of the inner circumference of the stretched flexible belt being substantially equal to the outer circumference of the seamless carrier support sleeve after stretching the flexible belt. The resulting flexible belt assembly fabricated by this process may be utilized in various systems including electrostatographic imaging systems.

Abstract: A process for fabricating a flexible electrophotographic imaging members including providing a flexible substrate including a biaxally oriented thermoplastic polymer web coated with at least one thermoplastic adhesive layer, vapor depositing on the adhesive layer a thin charge generating layer, cooling the charge generating layer to induce strain in the charge generating layer as well as at the interface between the charge generating layer and the substrate, heating the flexible substrate to shrink the biaxally oriented thermoplastic polymer web and substantially remove the strain from the charge generating layer, and forming a layer of a charge transport coating solution on the charge generating layer, the charge transport coating solution including a charge transporting film forming polymer matrix, and solvent for the film forming polymer matrix, and drying the charge transport coating solution.

Abstract: A seamed flexible imaging member and a method of constructing a flexible imaging sheet is disclosed. The method of constructing a flexible imaging sheet comprises the steps overlapping and forming. In the step of overlapping, a first marginal end region and a second marginal end region of the sheet are overlapped. In the forming step, a surface is formed integral with one end of the sheet and having at least one groove therein. The surface secures the first marginal end region and the second marginal end region to one another by a seam. The seamed flexible imaging member comprises a sheet having opposed marginal end regions. The marginal end regions of the sheet are secured to one another by a material which may include a portion of the sheet, a separate securing material or both. The material defines a surface having at least one groove therein with one end of the surface being integral with one end of the sheet.

Abstract: A seamed flexible imaging member and a method of constructing a flexible imaging sheet is disclosed. The method of constructing a flexible imaging sheet comprises the steps of overlapping and forming. In the step of overlapping, a first marginal end region and a second marginal end region of the sheet are overlapped. In the forming step, a substantially planar surface is formed, extending in a direction transverse to the sheet with one end of the planar surface being integral with the sheet adjacent one end of the sheet and the other end of the planar surface being integral with the sheet adjacent the other end of the sheet, for securing the first marginal end region and the second marginal end region to one another by a seam. The seamed flexible imaging member comprises a sheet having a first marginal end region and a second marginal end region.

Abstract: An electrophotographic imaging member including a supporting substrate, a charge blocking layer, an imaging layer including at least one photoconductive layer, the blocking layer including an uncrosslinked copolymer derived from vinyl hydroxy ester or vinyl hydroxy amide repeat units chemically modified at a nucleophilic hydroxyl group by a monofunctional electrophile, the copolymer having a number average molecular weight of at least about 10,000.