Abstract: An organic-inorganic hybrid material, including a charge transportable organic polymer and a metal oxide.

Abstract: A photoconductor comprising a photosensitive layer disposed on a support, wherein the photosensitive layer has a crosslinked layer and the crosslinked layer is produced by curing a dispersion in which at least one of an acryl-modified polyoraganosiloxane having a radical reactivity and an acryl-modified polyoraganosiloxane having an amine structure is dispersed in a radical polymerizable monomer.

Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer located overlying the electroconductive substrate, wherein the photosensitive layer comprises units obtained from a radical polymerizing monomer, in which an aliphatic group having two radical polymerizing groups and a charge transporting group including no radical polymerizing group are connected to each other in a single bond, at the surface thereof.

Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer overlying the electroconductive substrate. An outermost layer of the electrophotographic photoreceptor is a crosslinked layer including a radical polymerizing monomer having three or more functional groups without a charge transporting structure. The outermost layer also includes a radical polymerizing compound having one functional group with a charge transporting structure and a reactive silicone compound having a radical polymerizing functional group.

Abstract: A photoreceptor including an electroconductive substrate and a photosensitive layer located overlying the electroconductive substrate, the photosensitive layer including a cross-linking surface layer including a cross-linked copolymer of a radical polymerizable monomer (I) having at least three functional groups without a charge transport structure and a radical polymerizable monomer (II) having a charge transport structure, and a polysiloxane-acryl block copolymer having a charge transport property.

Abstract: An electrophotographic photoreceptor, including a crosslinked material including: units obtained from a radical polymerizing monomer A having three or more radical polymerizing groups; a compound B having the following formula (1): B1—Ar1—CH?CH—Ar2—B2 ??(1) wherein Ar1 represents a substituted or an unsubstituted monovalent group or bivalent group formed of an aromatic hydrocarbon skeleton; Ar2 represents a monovalent group or a bivalent group formed of an aromatic hydrocarbon skeleton or heterocyclic compound skeleton having one or more tertiaryamino group; and at least one of B1 and B2 is a hydrogen atom, and the other is an acryloyloxy group; a methacryloyloxy group; a vinyl group; an alkyl group having an acryloyloxy group, a methacryloyloxy group or a vinyl group; or an alkoxy group having an acryloyloxy group, a methacryloyloxy group or a vinyl group; and a photo polymerization initiator.

Abstract: An image bearing member including an electroconductive substrate, a photosensitive layer located overlying the electroconductive substrate and a cross linking surface layer comprising a charge transport curing compound and located overlying the photosensitive layer, wherein the charge transport curing compound includes a material including a structure unit represented by the following Chemical formula A: Chemical formula A where R1 to R5 and R1? to R5? independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, R6 represents a hydrogen atom or a methyl group and X represents an alkylene group having a straight chain or a branched chain having 2 to 5 carbon atoms.

Abstract: An electrophotographic photoconductor having at least a photoconductive layer on an electrically conductive support, in which a surface layer of the photoconductive layer can be obtained by curing at least a free-radical-polymerizable monomer having no charge transporting structure, represented by general formula (A) and a one-functional free-radical-polymerizable compound having a charge transporting structure, wherein R71, R72, R73, R74, R75, and R76 are described in the specification.

Abstract: Disclosed is an electrophotographic photoconductor including at least a photoconductive layer on an electroconductive substrate, which comprises at least a cross-linked surface layer formed by curing a tri- or more-functional radical polymerizable monomer without having a charge transporting structure and a mono-functional radical polymerizable compound having a charge transporting structure wherein the cross-linked surface layer has a surface roughness Rz of 1.3 ?m or less.

Abstract: A photoreceptor including an electroconductive substrate; a photosensitive layer which is located overlying the electroconductive substrate and which is not radically crosslinked; and an outermost layer which is located overlying the photosensitive layer and which includes a radically crosslinked material, wherein the radically crosslinked material includes a unit having a specific formula. An image forming method, an image forming apparatus, and a process cartridge, which use the photoreceptor.

Abstract: Disclosed is an electrophotographic photoconductor including at least a photoconductive layer on a conductive substrate, wherein the surface layer of the photoconductive layer contains at least a surface crosslinked layer formed by curing a tri- or more-functional radical polymerizable monomer without having a charge transporting structure and a mono-functional radical polymerizable compound having a charge transporting structure and the surface crosslinked layer has a surface roughness Rz of 1.3 ?m or less.

Abstract: An electrophotographic photoconductor having a layer of a crosslinked resin obtained by reacting an epoxy group-containing amine compound having a charge transferability-imparting group with at least one silicon compound selected from an epoxy ring-free alkoxysilane compound, an epoxy ring-free silanol compound, an epoxy ring-containing alkoxysilane compound and an epoxy ring-containing silanol compound.

Abstract: Disclosed is an electrophotographic photoconductor including at least a photoconductive layer on an electroconductive substrate, which comprises at least a cross-linked surface layer formed by curing a tri- or more-functional radical polymerizable monomer without having a charge transporting structure and a mono-functional radical polymerizable compound having a charge transporting structure wherein the cross-linked surface layer has a surface roughness Rz of 1.3 ?m or less.

Abstract: An electrophotographic photoconductor including: an outermost layer, wherein the outermost layer comprises an amino group-containing acryl-modified polyorganosiloxane, wherein the amino group-containing acryl-modified polyorganosiloxane is a copolymer in which a polyorganosiloxane represented by the following structural formula (1) and an acrylic monomer are graft-polymerized.

Abstract: An electrophotographic photoconductor having a layer of a crosslinked resin obtained by reacting an epoxy group-containing amine compound having a charge transferability-imparting group with at least one silicon compound selected from an epoxy ring-free alkoxysilane compound, an epoxy ring-free silanol compound, an epoxy ring-containing alkoxysilane compound and an epoxy ring-containing silanol compound.

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 new tetrahydroxy compound having a specific structure including two 2,3-dihydroxypropyloxy groups is provided. The compound has good charge transport property. In addition, a charge transport layer including the tetrahydroxy compound or a reaction product of the tetrahydroxy compound is provided. Further, a charge transport layer coating liquid is provided which includes the tetrahydroxy compound, and an alcohol. Furthermore an electrophotographic photoreceptor is provided which includes an electroconductive substrate, a charge generation layer, a charge transport layer and an outermost layer including the tetrahydroxy compound or a reaction product of the tetrahydroxy compound.

Abstract: Disclosed is an electrophotographic photoconductor including at least a photoconductive layer on a conductive substrate, wherein the surface layer of the photoconductive layer contains at least a surface crosslinked layer formed by curing a tri- or more-functional radical polymerizable monomer without having a charge transporting structure and a mono-functional radical polymerizable compound having a charge transporting structure and the surface crosslinked layer has a surface roughness Rz of 1.3 ?m or less.

Abstract: An electrostatic latent image bearing member is provided including a substrate and a photosensitive layer located overlying the substrate, wherein the outermost layer of the electrostatic latent image bearing member includes a cross-linked resin formed from a cross-linking reaction between a charge transport polyol having a specific formula and an isocyanate compound; and the use of the electrostatic latent image bearing member in an image forming apparatus, a process cartridge, and an image forming method.

Abstract: Disclosed is an electrophotographic photoconductor including at least a photoconductive layer on an electroconductive substrate, which comprises at least a cross-linked surface layer formed by curing a tri- or more-functional radical polymerizable monomer without having a charge transporting structure and a mono-functional radical polymerizable compound having a charge transporting structure wherein the cross-linked surface layer has a surface roughness Rz of 1.3 ?m or less.