Abstract: The present invention provides an electrophotographic photoreceptor including a photosensitive layer on a conductive substrate, an outermost layer of the electrophotographic photoreceptor including a cured film of a composition which includes at least one charge transporting compound (a) having a charge transporting skeleton and at least two structural units represented by R—O—CO—CR??CH—R? in the same molecule, and at least one polycarbonate resin; a ratio (IA/IC) of an absorption peak intensity (IA) resulting from stretching vibration of a carbonyl group originating from the structural unit represented by R—O—CO—CR??CH—R? of the charge transporting compound (a) to an absorption peak intensity (IC) resulting from stretching vibration of a carbonyl group originating from the polycarbonate resin in an IR absorption spectrum of the outermost layer being from about 0.5 to about 10, and a width at half maximum of the absorption peak of the absorption peak intensity (IA) being about 25 cm?1 or more.

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: An electrophotographic photoreceptor comprising an electrically conductive support having thereon a photo sensitive layer having a laminated structure comprising a charge generation layer and a charge transport layer, wherein the charge generation layer comprises a titanyl phthalocyanine pigment having a crystal structure exhibiting the following peaks of Bragg angles 2? (±0.2°) of X-ray powder diffraction employing a characteristic X-ray of a CuK? radiation (having a wavelength of 1.542 ?): at least a largest diffraction peak at 27.2°, major diffraction peaks at 9.4°, 9.6° and 24.0°, and a diffraction peak of a lowest angle at 7.3° while exhibiting no peak between the peaks of 7.3° and 9.4° and no peak at 26.

Abstract: The present invention provides a naphthalenetetracarboxylic acid diimide derivative represented by the following general formula (1): wherein R1 and R2, which are identical or different, each represent a substituted or non-substituted alkyl group or a substituted or non-substituted aromatic hydrocarbon group; R3 represents an alkyl group having 1 to 8 carbon atoms or an aromatic hydrocarbon group; R4, R5, R6 and R7, which are identical or different, each represent a hydrogen atom, a substituted or non-substituted alkyl group, or a substituted or non-substituted aromatic hydrocarbon group; and R1 and R2 may be linked to form a substituted or non-substituted heterocyclic group including a nitrogen atom; with compounds where all of R1, R2 and R3 are a methyl group, and compounds where both of R1 and R2 are a methyl group and R3 is a 1-octyl group being excluded.

Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. Embodiments pertain to an improved flexible electrophotographic imaging member that does not require an anticurl back-coating layer to prevent curling. The charge transport layer of the disclosed embodiments comprises a class of hole transporting plasticizers which act to counteract curling as well as impart good electrical performance to the imaging member.

Abstract: The present invention provides an electrophotographic carrier which includes a core particle, a first resin layer containing a charge-generating material for coating the core particle, and a second resin layer containing a hole-transporting material for coating the first resin layer. The invention also provides a two-component developer comprising said carrier, and an image-forming process and apparatus using said developer. According to the invention, high quality images can be formed, with excellent image density (especially when developing solid images) and less fogging.

Abstract: An electrophotographic imaging member includes a substrate, a photogenerating layer, and an optional overcoating layer, where the photogenerating layer includes a chemically functionalized carbon nanotube material.

Abstract: A photoconductor that includes a supporting substrate, a ground plane layer, a hole blocking layer, an adhesive layer, a photogenerating layer, and at least one charge transport layer of a charge transporting polycarbonate or a mixture of a charge transporting polycarbonate and a second polymer such as a polycarbonate.

Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.

Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover that contains a metal oxide, a phenolic resin, and a pentanediol ester; a photogenerating layer; and at least one charge transport layer.

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: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the photogenerating layer contains a thiuram sulfide additive.

Abstract: An electrophotographic photoreceptor including a conductive substrate, a photosensitive layer located overlying the conductive substrate, and a hardened protective layer located overlying the photosensitive layer. The hardened protective layer comprises a hardened material of a hardenable composition comprising a radical-polymerizable compound (A) having a charge transport structure and a radical-polymerizable compound (B) having an adamantane skeleton.

Abstract: An object of the invention is to provide a photoreceptor for electrophotography which has a low residual potential in an initial stage, is inhibited from increasing in residual potential, is prevented from decreasing in charge potential, undergoes little fatigue deterioration even upon repeated use, and is less apt to pose a problem concerning toxicity or environmental pollution. The invention relates to a photoreceptor for electrophotography which has a photosensitive layer containing an aromatic hydroxycarboxylic acid metal complex represented by the following general formula (1): and one or more charge-transporting agents each having an arylaminophenyl group in the molecule.

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 photoreceptor comprising a conductive support and a photosensitive layer obtained by laminating at least a charge generation layer and a charge transport layer containing a charge transport material in this order on the conductive support, the photosensitive layer being provided with a surface protective layer on the surface thereof, wherein the protective layer contains at least filler particles which exhibit a dispersed state defined by Rf given by the following equations (1) and (2): Rf=(df×b3)/(dm×a3)??(1) 1.0×10?3?Rf?2.

Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the at least one charge transport layer contains at least one imidazolium salt.

Abstract: The present invention provides an electrophotographic photoreceptor including a photosensitive layer on a conductive substrate, an outermost layer of the electrophotographic photoreceptor including a cured film of a composition which includes at least one charge transporting compound (a) having a charge transporting skeleton and at least two structural units represented by R—O—CO—CR??CH—R? in the same molecule, and at least one polycarbonate resin; a ratio (IA/IC) of an absorption peak intensity (IA) resulting from stretching vibration of a carbonyl group originating from the structural unit represented by R—O—CO—CR??CH—R? of the charge transporting compound (a) to an absorption peak intensity (IC) resulting from stretching vibration of a carbonyl group originating from the polycarbonate resin in an IR absorption spectrum of the outermost layer being from about 0.5 to about 10, and a width at half maximum of the absorption peak of the absorption peak intensity (IA) being about 25 cm?1 or more.

Abstract: An ethylene compound having general formula (I) below: wherein R1, R2 and R3 are each independently a hydrogen atom, a halogen atom, an alkyl group of 1 to 6 carbons or an alkoxyl group of 1 to 6 carbons; R4 is an alkyl group of 1 to 3 carbons, phenyl or tolyl; and Ar is an aryl group of 7 to 20 carbons or a heterocyclic group, functions as a charge transport material in an electrophotographic photoreceptor. This compound suppresses photodeterioration, causes little light-induced fatigue, can prevent a rise in the residual potential associated with such light-induced fatigue, has stable properties as an electrophotographic photoreceptor even when used for an extended period of time, and is able to stably provide a satisfactory image.

Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. Embodiments pertain to an improved flexible electrophotographic imaging member that does not require an anticurl back-coating layer to prevent curling. The charge transport layer of the disclosed embodiments comprises a class of hole transporting plasticizers which act to counteract curling as well as impart good electrical performance to the imaging member.

Abstract: An electrophotographic photoreceptor comprising laminating a monolayer type photosensitive layer containing a charge generation material and a charge transport material or a laminate type photosensitive layer obtained by laminating a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material in this order, on a conductive support, wherein the charge transport layer of the monolayer type photosensitive layer or laminate type photosensitive layer contains an enamine compound represented by the following formula (1).

Abstract: Disclosed is an electrophotographic imaging member including a substrate; a charge generating layer; a charge transport layer with a hole transport material; and a protective overcoat layer having a silicone polyether additive with at least one carbinol function group; a polyol binder; a hole transport material; a curing agent; and an acid catalyst.

Abstract: There is provided an electrophotographic photoconductor containing a conductive substrate, and a photosensitive layer, disposed thereon, containing a charge transporting material having a triarylamine structure represented by General Formula 1, and wherein the photosensitive layer satisfies Mathematical Formula 1 when peak heights in raman scattering spectra of the triarylamine structure are measured at a wavenumber of 1,324±2 cm?1 by a confocal raman spectroscopy using z-polarized light: where Ar1, Ar2, and Ar3 are substituted or unsubstituted aromatic hydrocarbon groups, and Ar1 and Ar2, Ar2 and Ar3, and Ar3 and Ar1 are optionally combined to form heterocyclic rings, respectively, ?=I(inside)/I(surface)?1.

Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, and wherein the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer is comprised of a polysiloxane/polyetherimide copolymer.

Abstract: Disclosed is an electrophotographic imaging member that includes a lubricant delivering coating having a polymer matrix, a charge transport component, and a lubricant encapsulated within nano- or microcapsules. Also disclosed is an imaging forming apparatus including a charging device, a toner developer device, a cleaning device, and a photoreceptor having a conductive substrate, a charge generating layer, a charge transport layer, and an optional overcoat layer, such that the outmost layer of the photoreceptor contains a lubricant encapsulated within nano- or microcapsules. Additionally provided is a method of forming an image with the disclosed electrophotographic imaging member.

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: The present disclosure relates to incorporation of boron nitride in the charge transport layer of a photoconductor. The boron nitride may have an aspect ratio of greater than 1.0, a D50 mean particle size of less than about 10.0 ?m and be present at about 5.0% (wt) or less in the charge transport layer. The cartridge may also include toner particles wherein the toner particles have a size range of about 1-25 ?m and an average degree of circularity of about 0.90-1.0. The photoconductor containing boron nitride when used in an electrophotographic printer may then provide acceptable dark decay and/or photoinduced decay (PID) curves relative to photoconductors that do not contain boron nitride along with improved resistance to toner filming.

Abstract: An object of the present invention is to provide an electrophotographic photosensitive body which is not impaired in electrophotographic characteristics such as charged potential and residual potential, and which is also excellent in repeating stability. The present invention provides an electrophotographic photosensitive body including a conductive support having thereon a layer containing a specific p-terphenyl compound and at least one additive.

Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein at least one of the photogenerating layer and the charge transport layer contains at least one of a pyridinium salt and a tetrazolium salt.

Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and where the charge transport layer contains at least one of an ammonium salt.

Abstract: An electrophotographic photoreceptor including a conductive substrate and a photosensitive layer overlying the conductive substrate. The photosensitive layer comprises a phthalimide isoindole derivative having a specific chemical formula.

Abstract: The presently disclosed embodiments are directed generally to an improved electrophotographic imaging member in which the overcoat layer incorporates core-shell fluorinated nano- or micro-particles encapsulated in a melamine shell to reduce torque and cleaning failures during the photoreceptor cleaning process.

Abstract: This invention relates to image bearing member and an image forming apparatus that employs the image bearing member. The image bearing member contains an electroconductive substrate; a charge generation layer; a charge transport layer; a cross-linking surface protective layer, and a monomer having one radical polymerizable functional group with a charge transport structure. The cross-linking surface protective layer is formed by curing a monomer having at least three radical polymerizable functional groups without a charge transport structure. For the image bearing member, the ratio of the layer thickness of the cross linking surface protective layer to the layer thickness of the charge transport layer is from 0.7 to 1.3.

Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. Embodiments pertain to an improved electrophotographic imaging member incorporating an outer layer having a nano- to micron-scale pattern imprinted into its surface to lower friction with the cleaning blade and improve print quality and performance. Embodiments also pertain to methods for making the improved imaging member.

Abstract: An electrophotographic photoreceptor comprising an electrically conductive support having thereon a photo sensitive layer having a laminated structure comprising a charge generation layer and a charge transport layer, wherein the charge generation layer comprises a titanyl phthalocyanine pigment having a crystal structure exhibiting the following peaks of Bragg angles 2? (±0.2°) of X-ray powder diffraction employing a characteristic X-ray of a CuK? radiation (having a wavelength of 1.542 ?): at least a largest diffraction peak at 27.2°, major diffraction peaks at 9.4°, 9.6° and 24.0°, and a diffraction peak of a lowest angle at 7.3° while exhibiting no peak between the peaks of 7.3° and 9.4° and no peak at 26.

Abstract: A photoconductor containing an optional supporting substrate, a thiophosphate containing photogenerating layer, and a charge transport layer which includes a polyhedral oligomeric silsesquioxane (POSS)-containing material and an optional thiophosphate.

Abstract: A preferred aspect of an electrophotographic photoconductor of the present invention contains a layer containing a hardened material which is prepared by polymerizing (A) a chain-polymerizable group-containing tertiary amine compound in which at least one alkyl group is bound to a nitrogen atom constituting an amine structure through chain polymerization. Another preferred aspect of the electrophotographic photoconductor contains a layer containing a hardened material which is prepared by polymerizing the (A) component, and (B) a chain-polymerizable charge transporting compound through chain polymerization. Still another preferred aspect of the electrophotographic photoconductor contains a layer containing a hardened material which is prepared by polymerizing the (A) component, (B) the chain-polymerizable charge transporting compound, and (C) a trifunctional or more chain-polymerizable compound through chain polymerization.

Abstract: A photoconductor that includes an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the charge transport layer contains a phenolic chelating additive.

Abstract: Disclosed herein is a flexible imaging member having a high concentration of a charge transport compound having optimum enhanced mechanical and electrical characteristics. By increasing the concentration of the charge transport compound to a level of from about 55 weight percent or more, including from about 55 weight percent to about 70 weight percent, and from about 55 weight percent to about 65 weight percent, a flexible imaging member can be produced with reduced residual voltage and/or improved sensitivity. Furthermore, the fatigue cracking resistance of the charge transport layer can be improved through the implementation of a heat stress release process described more particularly herein.

Abstract: A photoconductive imaging member including at least a charge generating layer, a charge transport layer, and an overcoat layer. The overcoat layer includes a cured or substantially crosslinked product of at least a phenol compound and a charge transport compound.

Abstract: An electrophotographic photoreceptor has at least an electroconductive substrate, and a photosensitive layer formed on or above the electroconductive substrate, wherein an outermost layer of the photoreceptor is a cured membrane of a composition containing at least one compound (a) having in a single molecule thereof a charge transporting skeleton and a chain polymerizable functional group, and at least one thermopolymerizable or photopolymerizable silicone polymeric radical polymerization initiator (b).

Abstract: An object of the present invention is to provide an electrophotographic photosensitive body having improved electrophotographic characteristics such as sensitivity and residual potential and also having excellent durability. The present invention provides an electrophotographic photosensitive body having a layer containing at least one specific p-terphenyl compound and at least one polycarbonate resin represented by the general formula (I): in a mass ratio of the p-terphenyl compound to the polycarbonate resin within the range of 2:8 to 7:3.

Abstract: An image forming apparatus, including an electrostatic latent image bearer bearing an electrostatic latent image; an electrostatic latent image former forming the electrostatic latent image on a surface of the latent image bearer; an image developer developing the electrostatic latent image with a developer including a toner to form a toner image on the surface of the image bearer; a transferer transferring the toner image onto a receiving material; a fixer fixing the toner image to the receiving material; and a discharger discharging charges remaining on the image bearer by irradiating the image bearer with discharging light having a wavelength of less than 500 nm, wherein the latent image bearer includes a substrate; and a photosensitive layer overlying the substrate, including a charge generation layer containing an organic charge generation material, and a charge transport layer containing at least one of charge transport materials having the formulae (I) to (IV).

Abstract: An electrophotographic imaging member includes a substrate, a charge generating layer, a charge transport layer, and an overcoating layer, where the overcoating layer includes a terphenyl arylamine dissolved or molecularly dispersed in a polymer binder.

Abstract: The present invention provides an electrophotographic photoconductive member comprising a substrate, and a photoconductive layer containing a hole transferring material, a charge generating material and a binder resin, wherein a value (IV/OV value) in which the inorganic value is divided by the organic value of the binder resin is 0.

Abstract: An electrophotographic photoreceptor including a conductive substrate and a photosensitive layer located overlying the conductive substrate. The photosensitive layer comprises a specific diamine compound.

Abstract: A latent electrostatic image bearing member including at least a support, a photoconductive layer on the support and a surface layer on the photoconductive layer, wherein a film having the same composition as the surface layer is formed on a slide glass such that the film had a thickness of 5 ?m; and the haze value measured after rubbing the film with a steel wool of #000 and a load of 500 gf for 50 times is 10% or less.

Abstract: An object of the invention is to provide a photoreceptor for electrophotography which has a low residual potential in an initial stage, is inhibited from increasing in residual potential, is prevented from decreasing in charge potential, and undergoes little fatigue deterioration even upon repeated use. The invention relates to a photoreceptor for electrophotography which has a photosensitive layer containing a cyclic phenol sulfide represented by the following general formula (1): and one or more charge-transporting agents each having an arylamino group in the molecule, and which has excellent durability.

Abstract: Disclosed is an electrophotographic imaging member including a substrate; a charge generating layer; a charge transport layer with a hole transport material; and a protective overcoat layer having a silicone polyether additive with at least one carbinol function group; a polyol binder; a hole transport material; a curing agent; and an acid catalyst.

Abstract: A photoconductive having an overcoat layer that includes a cured or substantially crosslinked product of at least a melamine-formaldehyde resin and a charge transport compound, and an optional phenol compound.