Abstract: A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and a charge transport layer, and where the charge transport layer contains a mixture of a charge transport component and a tetraaryl polycarbonate.

Abstract: An image bearing member including an electroconductive substrate, a charge generation layer, a charge transport layer and, a cross-linked type charge transport layer, the cross-linked type charge transport layer having a structure unit deriving from a first component, a second component, and a third component, the first component containing a copolymer having a cyclic structure and/or a structure represented by a Chemical structure 1 as a repeating unit, where Ra represents a hydrogen atom or methyl group and Rb represents a straight-chained saturated aliphatic hydrocarbon group having 8 to 34 carbon atoms, the second component containing at least one of a radical polymerizable monomer and a radical polymerizable oligomer without a charge transport structure, and the third component containing one or more kinds of radical polymerizable compounds having a charge transport structure.

Abstract: The presently disclosed embodiments relate generally to a flexible imaging member having an anti-curl back coating comprising a liquid plasticizer, and the imaging member is substantially flat.

Abstract: Provided is a photoreceptor for electrophotography, a process for producing the photoreceptor, and an electrophotographic apparatus that includes the photoreceptor. The photoreceptor has a photosensitive layer which contains a resin binder that is a copolymerized polyallylate resin. An electrophotographic apparatus having a photoreceptor drum that includes this photoreceptor has a reduced surface frictional resistance throughout the printing period from the beginning to after printing, thus reducing the amount of surface wear while producing satisfactory images.

Abstract: A photoconductor that includes an optional anticurl layer, optional supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional ground strip segment, an optional adhesive layer, a photogenerating layer, and a charge transport layer that contains an acrylonitrile-butadiene-styrene polymer.

Abstract: An organic photoreceptor having a photosensitive layer, an electric conductive support, and a protective layer is disclosed, in which the protective layer comprises a composition produced by reacting tin oxide particles an acryloyl or methacryloyl group on their surface with a compound having an acryloyl or methacryloyl group. A production method of the same, an image forming apparatus and a process cartridge using the same are also disclosed.

Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members which include a protective overcoat layer comprising specific low surface energy polycarbonates of excellent optical clarity and having a slippery and adhesive surface to impact toner image transfer efficiency to receiving papers and effect contact friction reduction by which imaging members abrasion/wear resistance is enhanced. The present embodiments also disclose a process for making and using these members.

Abstract: An image holding member for an image forming apparatus includes a support and a photosensitive layer disposed on the support and containing a compound represented by following formula (I), wherein R1s each independently represent a substituted or unsubstituted linear or branched alkyl group having from 1 to 8 carbon atoms; Ar's each independently represent a substituted or unsubstituted phenyl group, a substituted or unsubstituted monovalent polynuclear aromatic hydrocarbon group having two aromatic rings, a substituted or unsubstituted monovalent condensed aromatic hydrocarbon group having two or three aromatic rings, or a substituted or unsubstituted monovalent aromatic heterocyclic group; and n's each independently represent a number of from 0 to 7.

Abstract: The presently disclosed embodiments are directed to imaging members used in electrostatography. More particularly, the embodiments pertain to electrophotographic imaging members which have an added-on protective overcoat layer formulated to comprise of a novel A-B diblock copolymer comprising two segmental blocks of a bisphenol polycarbonate and an organic acid terminal which provides chemical vapor contaminant resistive property. The overcoat layer may further be formulated to include small quantity of charge transport compound. The present embodiments provide superior copy printout quality.

Abstract: The presently disclosed embodiments are directed to imaging members used in electrostatography. More particularly, the embodiments pertain to electrophotographic imaging members which have imaging layer(s) formulated to comprise of a novel A-B diblock copolymer binder consisting of two segmental blocks of a bisphenol polycarbonate and a phthalic acid which provides chemical vapor contaminant resistive property. The present embodiments provide superior copy printout quality.

Abstract: To provide an electrophotographic photosensitive member that can reproduce good images with less positive ghost and also has a good photosensitivity, the electrophotographic photosensitive member is incorporated in its photosensitive layer with a copolymer having a repeating structural unit represented by the formula (1) and a repeating structural unit represented by the formula (2), or a copolymer having a repeating structural unit represented by the formula (1) and a repeating structural unit represented by the formula (3).

Abstract: Disclosed is an electrophotographic photosensitive body which is remarkably improved in pencil scratch resistance and wear resistance. Specifically disclosed is an electrophotographic photosensitive body wherein a polycarbonate resin having a structural unit (1) represented by the formula below is used as a binder resin for a photosensitive layer (or for a charge-transporting layer in case of multilayer type) which is formed on a conductive base. [chemical formula 1] (1) (In the formula, R1-R30 respectively represent a hydrogen atom or a substituent selected from the group consisting of fluorine, chlorine, bromine, iodine, an alkyl group having 1-17 carbon atoms, an aryl group having 6-12 carbon atoms, an alkoxy group having 1-5 carbon atoms, an alkenyl group having 2-12 carbon atoms and an aralkyl group having 7-17 carbon atoms.

Abstract: To provide an electrophotographic photosensitive member that can reproduce good images with less positive ghost and also has a good photosensitivity, the electrophotographic photosensitive member is incorporated in its photosensitive layer with a copolymer having a repeating structural unit represented by the formula (1) and a repeating structural unit represented by the formula (2), or a copolymer having a repeating structural unit represented by the formula (1) and a repeating structural unit represented by the formula (3).

Abstract: A photoconductor that includes for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and a charge transport layer, and where the charge transport layer contains a charge transport component, and a mixture of a poly(imide-carbonate) polymer and a fluorinated polymer and optionally a third polymer, like a polycarbonate.

Abstract: Electrophotographic photoconductor including a conductive substrate; and a photosensitive layer provided on the conductive substrate and including at least a charge generation material; a charge transport material; and a resin binder including a copolymer polyarylate resin represented by general formula (I) below: and manufacturing method therefore. Good images with less cracking occurrence are obtained during recycling of a photosensitive drum and peripheral members thereof that includes the electrophotographic photoconductor, and also when a liquid development process is employed.

Abstract: The present invention relates to an electrophotographic photoreceptor having an electroconductive substrate, and a charge transport layer and a charge generation layer formed on the substrate, characterized in that the charge transport layer contains a charge transport material represented by formula (1) and a binder resin, and the mass ratio of the charge transport material to the binder resin is from 5/100 to 45/100: wherein Ar1 is an arylene group which may have a substituent; each of Ar2, Ar3, Ar4 and Ar5 is an aryl group which may have a substituent; and n is an integer of from 3 to 6.

Abstract: In an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, the photosensitive layer is a positive-charging laminate comprising at least a charge transport layer and a charge generating layer laminated in that order, with the charge generating layer containing at least a resin binder, a charge generating agent, a space filler and an electron transport agent, while the charge transport layer contains at least, as a resin binder, polystyrene and a hole transport agent, and mineral oil of the charge transport layer is in an amount of 1% by mass or less of an amount of polystyrene. Thus, a highly durable and economic positive-charging multilayer electrophotographic photoreceptor and a manufacturing method therefor may be achieved.

Abstract: Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising an overcoat layer which comprises light-absorbing material that improves print quality. The light-absorbing material reduces the intrinsic light shock suffered by conventional overcoat layers without negatively impacting electrical properties of the overcoat layer.

Abstract: The electrophotographic photoreceptor includes a substrate and a photosensitive layer disposed on the substrate, wherein a surface layer of the electrophotographic photoreceptor contains fluorine-containing polymer particles and a dispersion aid for the fluorine-containing polymer particles, and the surface layer has convex portions with diameters of from 200 ?m to 500 ?m spaced at an average interval of from 600 ?m to 950 ?m.

Abstract: A long-life electrophotographic photosensitive body having excellent wear resistance and crack resistance can be obtained by using a polycarbonate resin composition, which is obtained by blending 0.01-5 parts by weight of a silicone-modified polyurethane per 100 parts by weight of a polycarbonate resin, as a binder for photosensitive layer (or in case when the photosensitive layer is of multilayer type, for at least an electron transport layer) of the electrophotographic photosensitive body. The silicone-modified polyurethane is obtained by reacting a diol component (a) represented by the general formula (I) below, an active hydrogen-containing polysiloxane compound (b), a polyisocyanate component (c) and, if necessary, a chain extender (d).

Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a polyamideimide.

Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a spirodilactam based polycarbonate.

Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of an ozone quenching compound into the charge transport layer to quench the corona effluents and protect the polycarbonate binder of the charge transport layer from being attacked by ozone species, thereby enhancing wear resistance and fatigue cracking.

Abstract: The presently disclosed embodiments are directed generally to an improved electrostatographic imaging member incorporating specific anti-oxidants into the charge transport layer to achieve substantially reduced lateral charge migration. The imaging members having such an charge transport layer can include charge transport molecules such as N,N,N,?N?-tetra(4-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine without increased sensitivity to corona-induced lateral charge migration.

Abstract: Embodiments provide novel imaging members used in electrostatography. More particularly, there is provided flexible electrophotographic imaging members which have improved imaging layer(s) formulated to comprise of a plasticizer in a material matrix of a solid solution comprising a charge transporting compound and a film forming polymer binder which is a novel A-B diblock copolymer or a binary polymer blend of a novel A-B diblock copolymer and a bisphenol polycarbonate. The flexible imaging members thus prepared have improved photoelectrical cyclic function stability, chemical resistive property, and are curl-free, and thus eliminate the need for an additional anticurl back coating layer.

Abstract: A imaging member, such as a photoreceptor, comprising a capped structured organic film comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film may be a multi-segment thick structured organic film.

Abstract: The presently disclosed embodiments are directed generally to an improved electrostatographic imaging member in which the overcoat layer comprises cross-linkable polyester resins. The overcoat layer not only provides wear resistance, but it also provides higher charge transport efficiency and therefore better photoelectrical properties. In addition, the polyesters can cross-link with a variety of resins and thus provide good adhesion as well.

Abstract: To provide an electrophotographic photoconductor including: a substrate; a charge generating layer; and a charge transporting layer, the charge generating layer and the charge transporting layer being disposed over the substrate, wherein the charge transporting layer contains a charge transporting material represented by General Formula (I) below and an additive represented by General Formula (II) below: where R1, R2 and R3 each independently denote any one of a hydrogen atom, a halogen atom, an alkyl group which may contain a substituent, and an alkoxy group which may contain a substituent, where R4 and R5 each denote a tertiary butyl group, and R6 and R7 each independently denote one of an alkyl group which may contain a substituent, and an aryl group which may contain a substituent.

Abstract: A photoreceptor including an electroconductive substrate, a photosensitive layer located overlying the electroconductive substrate, and a surface layer located overlying the photosensitive layer, wherein the surface layer is a cross linked surface layer comprising filler particulates on which linear scar is formed along the circumference direction, and the filler particulates form concave portions on a groove formed by the linear scar, and wherein the ten point average roughness Rz along the direction of the rotation axis of the photoreceptor measured on the circumference surface thereof is from 0.17 to 2.00 ?m and the average distance Sm of concavities and convexities along the direction of the rotation axis of the photoreceptor measured on the circumference surface thereof is from 20 to 500 ?m, and the ten point average roughness Rz along the circumference direction of the photoreceptor measured on the circumference surface thereof is from 0.13 to 0.

Abstract: Embodiments pertain to a flexible imaging member used in electrostatography and processes for making and using the imaging member. More particularly, the embodiments pertain to a structurally simplified flexible electrophotographic imaging member that has reasonable flatness and exhibits good performance without the need of an anticurl back coating layer.

Abstract: A polycarbonate polymer includes: a monomer unit represented by a formula (1A) below; and a monomer unit represented by a formula (2). A haze of a solution that is obtained by dissolving the polycarbonate polymer in THF (tetrahydrofuran) at a concentration of 10 mass % is 5% or less (according to JIS K7105, optical path length of 10 mm). In the formula (1A), R and R? each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 12 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms; n1 is an integer in a range of 2 to 4; and n2 is an integer in a range of 25 to 220; and in the formula (2), Ar represents a divalent aromatic group.

Abstract: An image forming apparatus including an image bearing member which has an electroconductive substrate, a photosensitive layer overlying the electroconductive substrate and a cross-linked resin surface layer overlying the photosensitive layer and bears a latent electrostatic image on the surface thereof, an application device to apply a solid lubricant to the image bearing member; a charging device to charge the surface of the image bearing member, an irradiation device to irradiate the surface of the image bearing member with light to form the latent electrostatic image thereon, a development device to develop the latent electrostatic with toner to obtain a developed image, a transfer device to transfer the developed image to a recording medium, and; a cleaning device to clean the surface of the image bearing member, wherein the cross-linked resin surface layer includes a cross-linked body of trimethylol propane triacrylate and particulates including silicon and an average diameter of agglomeration areas of t

Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein the charge transport layer contains a polysulfone.

Abstract: An electrophotographic photoreceptor which is excellent in wear resistance and crack resistance and has a long photoreceptor lifetime can be produced by using a polycarbonate resin composition prepared by blending 100 parts by weight of a polycarbonate resin with 0.01 to 5 parts by weight of a silicone-modified polyurethane obtained by reacting (a) a diol component represented by the general formula (I) with (b) an active hydrogen containing polysiloxane compound, (c) a polyisocyanate component and, if necessary, (d) a chain extender as the material for the backing film of a photoreceptor belt. [Chemical formula 1](I) wherein R1 and R2 are each independently hydrogen or alkyl; R3 is hydrogen, alkyl, alkoxy, halogeno or alkoxycarbonyl; M is a single bond, substituted or unsubstituted alkylene, or oxyalkylene; and n is an integer of 0 to 4.

Abstract: The invention provides an image forming apparatus, comprising: an electrophotographic photoreceptor, a charging unit, an exposure unit, a developing unit, a transfer unit, a fixing unit, and a cleaning unit; the electrophotographic photoreceptor having an outermost layer containing a charge transporting material and at least one curable resin selected from the group consisting of a phenol resin, an epoxy resin and a melamine resin, and the toner having an ammonium ion concentration as determined by ion chromatography of from about 50 ppm to about 300 ppm.

Abstract: Disclosed herein is an electrophotographic imaging member comprising a substrate, a charge transport layer and an overcoat layer formed by combining a film forming binder and a hole transporting hydroxy triarylamine compound having at least one hydroxyl functional group that is linked to a ring carbon of an aryl group by an alkyl group having 1 to 12 carbon atoms and is capable of forming at least one of a chemical bond and a physical bond with the film forming binder. Also disclosed is an electrophotographic imaging member with an overcoat layer formed by combining a film forming polycarbonate binder, a hole transport material, a surface energy reducing silicone material comprising a crosslinkable acrylate monomer, and a solvent. Coatings and methods of forming imaging members also are disclosed.

Abstract: The presently disclosed embodiments are directed to an improved low wear overcoat for an imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer, and a process for preparing the same including combining a binder, a hole transport molecule, a melamine formaldehyde crosslinking agent and an acid catalyst dissolved in an alcohol solvent to form an overcoat solution, and subsequently providing the overcoat solution onto the charge transport layer to form an overcoat layer.

Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, a charge transport layer, and an overcoat layer that contains a titanocene.

Abstract: An electrophotographic photoconductor includes a conductive substrate and an outermost surface layer formed on the conductive substrate and containing a binder resin and a copolymer derived from a reactive monomer having charge transport property and a reactive monomer having no charge transport property, the copolymer having a side chain with 4 or more carbon atoms in a constitutional unit derived from the reactive monomer having no charge transport property.

Abstract: An object of the present invention is to provide an electrophotographic photoconductor having an extremely low increase in friction coefficient and wear, while also having superior cleanability even after long-term or large-volume printing, and to provide an electrophotographic apparatus for forming an image using a polymerization toner without providing a unit for externally supplying a lubricant to a photoconductor. Namely, the present invention provides an electrophotographic photoconductor having a photosensitive layer and a crosslinked resin surface layer over a conductive substrate, wherein the crosslinked resin surface layer at least contains trimethylolpropane triacrylate, a dimethylpolysiloxane having a radically polymerizable functional group, and lubricating fine particles.

Abstract: The presently disclosed embodiments are directed to imaging members used in electrostatography. More particularly, the embodiments pertain to electrophotographic imaging members which have imaging layer(s) formulated to comprise of a novel A-B diblock copolymer binder consisting of two segmental blocks of a bisphenol polycarbonate and a phthalic acid which provides chemical vapor contaminant resistive property. The present embodiments provide superior copy printout quality.

Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a polyalkylene glycol benzoate and a fluorinated polymer.

Abstract: A photoconductor that includes a supporting substrate, a photogenerating layer, and at least one charge transport layer that contains at least one charge transport component, and a polysiloxane/polyetherimide polymer.

Abstract: Present embodiments are directed to the preparation of curl-free flexible imaging members used in electrostatography. More particularly, the embodiments pertain to a structurally simplified flexible electrophotographic imaging member, including the incorporation of a plasticizer or a blend of plasticizers in the imaging layer(s) to effect imaging layer(s) stress relieving outcome for curl control without the need of an anticurl back coating, and methods for making and using the imaging member.

Abstract: Disclosed is an imaging member comprising a conductive substrate, a photogenerating layer comprising a photogenerating material in contact with the substrate, and a charge transport layer in contact with the photogenerating layer, the charge transport layer comprising a charge transport material, a polymer containing carboxylic acid groups or groups capable of forming carboxylic acid groups, and a hydroquinone antioxidant, wherein the photogenerating layer is situated between the charge transport layer and the conductive substrate.

Abstract: An image bearing member including an electrostatic substrate, a photosensitive layer located overlying the electrostatic substrate, a surface layer located overlying the photosensitive layer, and the surface layer is a cross-linking resin layer in which particulates having a needle form are dispersed and which is formed by curing a monomer having at least three radical polymerizable functional groups without a charge transport structure and a radical polymerizable compound having a charge transport structure.

Abstract: The presently disclosed embodiments relate in general to electrostatography comprising improved features in the flexible imaging member that enhance function when used in the electrostatographic imaging system. These embodiments pertain, more particularly, to a structurally simplified curl-free flexible electrostatographic imaging member belt containing a stress/strain free ground strip layer and stress/strain free imaging layer(s) to improve dynamic belt cyclic motion quality and extend service life.

Abstract: The presently disclosed embodiments are directed to an imaging member having an outermost layer formulation that includes wax particles which creates a rough surface morphology for the layer and imparts increased scratch resistance, reduced torque, and improved cleaning performance to the layer. In embodiments, the outermost layer is an overcoat layer used for an improved imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer.

Abstract: Present embodiments pertain to an improved electrostatographic imaging member having low contact friction surfaces to ease sliding mechanical interaction and suppressing abrasion/wear failure and methods of preparing thereof. The improved imaging member has layers comprising one or two low surface energy polymeric materials that enhance the physical and mechanical functions and reduce the layers surface contact friction of the imaging member to extend service life.

Abstract: A flexible imaging member comprising a slippery charge transport layer including a novel low surface energy polymer binder and a charge transport compound in the layer. In specific embodiments, the novel low surface energy polymer binder in the charge transport layer is a bisphenol A polycarbonate containing short polysiloxane segments present in the polycarbonate backbone—thus eliminating the light scattering effect to render optical clarity—and the charge transport compound is a diamine hole transporting species. The imaging member does include an anticurl back coating to maintain flatness.