Abstract: An electrophotographic photoreceptor, comprising a conductive support, an undercoat layer and a photosensitive layer formed in sequence, the electrophotographic photoreceptor characterized in that a coating solution for undercoat layer formation for producing the electrophotographic photoreceptor contains at least a binder resin and metal oxide particles surface-treated with anhydrous silicon dioxide.

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 present invention relates to a polyvinyl acetal resin having a specific repeating structural unit, an electrophotographic photosensitive member using the polyvinyl acetal resin, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.

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: A photoconductor that includes a backing 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 backing layer is in contact with the supporting substrate on the reverse side thereof, and the outermost layer of the backing layer is comprised of a polyurethane comprised of a dendritic polyester polyol and a polyisocyanate.

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: An electrophotographic photoreceptor comprising at least a photosensitive layer formed 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 generation layer contains an oxotitanylphthalocyanine as the charge generation material and metal oxide microparticles, and the electrophotographic photoreceptor has photosensitive properties in light source of wavelength range from 360 to 420 nm.

Abstract: An objective is to provide a high releasing electrophotographic photoreceptor exhibiting lubricity and mechanical strength. The photoreceptor possessing a photosensitive layer on a conductive support, wherein an outermost layer of the photoreceptor comprises a fluorine resin represented by the following formula. wherein each of X, Y and Z represents a hydrogen atom, a halogen atom, a halogen-substituted alkyl group or a halogen-substituted alkoxy group; at least one of X, Y and Z represents a fluorine atom; each of R4, R5, R6 and R7 represents a hydrogen atom, a halogen atom or a halogen-substituted alkyl group; each of R1, R2, and R3 represents a hydrogen atom, a halogen atom or a halogen-substituted alkyl group; at least one of R1, R2, and R3 represents a fluorine atom; n1 represents an integer of 1-8000; and n2 represents an integer of 0-4000.

Abstract: A photoconductor that includes, for example, a substrate, an optional ground plane layer, an undercoat layer thereover wherein the undercoat layer contains an aminosilane and a phenol polysulfide, a photogenerating layer, and at least one charge transport layer.

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, for example, a backing layer, a supporting substrate, a photogenerating layer, and a charge transport layer, and where the outermost layer of the backing layer is comprised of a mixture of a glycoluril resin and a polyol resin.

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: A photoconductor that includes, for example, a backing layer, a supporting substrate, a photogenerating layer, and a charge transport layer, and where the outermost layer of the backing layer is comprised of a mixture of a glycoluril resin and a polyacetal resin.

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: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a thiobis(thioformate) containing charge transport layer; a thiobis(thioformate) containing photogenerating layer, or where both at least one charge transport layer and the photogenerating layer includes, in addition to other components, a thiobis(thioformate).

Abstract: A photoconductor that includes, for example, a substrate; an undercoat layer thereover wherein the undercoat layer contains a metal oxide dispersed in a mixture of a phenolic resin and a glycoluril resin; a photogenerating layer; and at least one charge transport layer.

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

Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved imaging member having a charge transport layer comprising a top layer and a bottom layer, wherein the layers have varying concentrations of high quality N,N,N?N?-tetra(4-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine to provide tunable discharge rate.

Abstract: An electrophotographic photoreceptor comprising a conductive support and a photosensitive layer provided on or above the conductive support, the photosensitive layer having an outermost layer comprising a cured product of a composition comprising a curable resin, a surfactant containing a fluorine atom, and a charge transporting organic compound having a specific structure.

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 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 electrophotographic imaging member includes a substrate, a photo generating layer, and an optional overcoating layer, wherein the photo generating layer includes a cyclic triphenylamine derivative material.

Abstract: An electrophotographic imaging member includes a substrate, a charge generating layer, a charge transport layer, and an overcoating layer, the overcoating layer being a cured film formed from a film forming resin composition including at least a melamine compound, a polyol, and a charge transport compound, where the charge transport compound is represented by: QL-OH]n. where Q represents a charge transport component, L represents a divalent linkage group, and represents a number of repeating segments or groups.

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 slippery polyhedral oligomeric silsequioxane molecules that enhance the physical and mechanical functions and reduce the layers surface contact friction of the imaging member to extend service life.

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 slippery polyhedral oligomeric silsequioxane molecules that enhance the physical and mechanical functions and reduce the layers surface contact friction of the imaging member to extend service life.

Abstract: A charge transport particle comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein at a macroscopic level the covalent organic framework is a particle that has electroactive added functionality.

Abstract: A photoconductor that includes, for example, a substrate, an undercoat layer thereover wherein the undercoat layer contains a metal oxide dispersed in a mixture of a urea formaldehyde resin and a phenolic formaldehyde resin; a photogenerating layer; and at least one charge transport layer.

Abstract: An electrophotographic photoreceptor is disclosed, in which an outermost surface layer of the electrophotographic photoreceptor is made of a cured film of a composition including a compound represented by the following Formula (M1) and a charge transporting material having a chain polymerizable functional group:

Abstract: The present invention provides an electrophotographic photoreceptor including at least an electroconductive substrate and a photosensitive layer provided on or above the electroconductive substrate, wherein an outermost layer of the electrophotographic photoreceptor is a layer composed of a cured film of a composition including at least one of compound having a chain-polymerizable functional group and a charge-transportable backbone in the molecule thereof, a polymerization initiator and a radical deactivator.

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 wherein at least one of the photogenerating layer and charge transport layer contains a ferrocene.

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: An electrophotographic photoconductor including a layer comprising a cross-linked hardened material of a compound A with a compound B. Each of the compounds A and B has at least two alcohol groups, at least one of the compounds A and B has at least two methylol groups, at least one of the compounds A and B has at least three alcohol groups, and at least one of the compounds A and B has a charge transportable group. In other words, the compound A has X methylol groups, X being an integer of 2 or more, the compound B has Y alcohol groups, Y being an integer of 2 or more, at least one of the compounds A and B has a charge transportable group, and the following relations are satisfied: x=2 and y?3, or x?3 and y?2.

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: 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: 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 polyalkylene glycol benzoate.

Abstract: An electrophotographic photoreceptor includes: a conductive substrate; a photosensitive layer including a charge-generating layer containing a charge-generating material and a charge-transporting layer containing a charge-transporting material, the charge-transporting layer having a hole mobility of about 5.0×10?6 (cm2/V·sec) or less at an electric field of 2 V/cm; and an overcoat layer that is provided on the photosensitive layer and contains a cured material of a charge-transporting material, wherein relational expression (1) Ip(OCL)>Ip(CTL)>Ip(CGL) is satisfied wherein Ip(CGL) represents an ionization potential (eV) of the charge-generating material contained in the charge-generating layer; Ip(CTL) represents an ionization potential (eV) of the charge-transporting material contained in the charge-transporting layer; and Ip(OCL) represents an ionization potential (eV) of the charge-transporting material contained in the overcoat layer.

Abstract: Embodiments relate generally to an imaging member that facilitates removal of the imaging member coating layers disposed over the imaging member and environmentally or “green” methods for using the same. More specifically, the present embodiments disclose an electrophotographic photoreceptor that includes a specifically formulated undercoat layer that allows easy removal of the photoreceptor layers disposed on top of the undercoat layer. The present embodiments provide a simple yet efficient method for reclaiming recycling or remanufacturing electrophotographic photoreceptors.

Abstract: The disclosure provides an electrophotographic photoreceptor and an electrophotographic imaging apparatus including the photoreceptor, wherein the electrophotographic photoreceptor comprises: a conductive substrate; a charge generating layer formed on the conductive substrate; a charge transport layer formed on the charge generating layer; and an overcoat layer formed on the charge transport layer, wherein the ratio (R2/R1) of the surface resistance value (R2) of the overcoat layer to the surface resistance value (R1) of the charge transport layer is from about 0.01 to about 1.5.

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 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 wherein the at least one charge transport layer contains at least one of ketal. In embodiments, the charge transport layer may include an ?-hydroxyketone, an ?-diketone, or mixtures thereof.

Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein at least one of the charge transport layer and the photogenerating layer contains a zirconocene.

Abstract: An electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer that includes a phthalocyanine pigment, a charge-transporting substance and at least one kind of lignophenol derivative.

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 polyalkylene glycol benzoate.

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: Improved electrophotographic imaging members which pertain to the incorporation of a fluoroketone into the charge transport layer to achieve a structurally simplified flexible electrophotographic imaging member that remains flat without the need for an anticurl back coating layer. The imaging member is both more slippery and has a reduced coefficient of friction, thus extending service life.

Abstract: Embodiments of a photoconductor for use in a printer or printer cartridge comprise an electrically conductive substrate, a charge generation layer disposed over the electrically conductive substrate, and a charge transport layer disposed over the charge generation layer, wherein the charge transport layer comprises charge transport molecules with octyl/decyl glycidyl ether (OGE) or dodecyl/tetradecyl glycidyl ether (DGE), or combinations thereof, added to improve resistance to crazing, cracking and crystallization in the change transport layer.

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: 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, an organic phosphite or organic phosphonite antioxidant, and a hydroquinone antioxidant, wherein the photogenerating layer is situated between the charge transport layer and the conductive substrate.

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: An organic opto-electronic polymer having the structure of formula (I) is provided: The polymer can be used in the light-emitting layer of an organic light-emitting element as a blue light-emitting material.