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 &mgr;m or less.

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 &mgr;m or less.

Abstract: An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon containing as an effective component an aromatic polycarbonate resin having a structural unit of formula (2) and a structural unit with charge transporting properties, each of the structural units being contained in an amount of 5 wt. % or more of the total weight of the polycarbonate resin. There is disclosed an aromatic polycarbonate resin having a structural unit of formula (1) and the structural unit of formula (2), with the relationship between the composition ratios being 0<k/(k+j)<1 when the composition ratio of the structural unit (1) is k and that of the structural unit (2) is j, or an aromatic polycarbonate resin having a repeat unit of formula (3). The formulas (1) to (3) are specified in the specification.

Abstract: An electrophotographic photoconductor has an electroconductive support and a photoconductive layer which is formed thereon and contains at least one resin of a polyurethane resin, a polyester resin, or a polycarbonate resin, each resin having at least a structural unit of formula (1): 1

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: The present invention aims to provide a photoconductor having improved wear resistance, and which has reduced foreign matter attached on the photoconductor surface.

Abstract: An aromatic block polycarbonate resin is prepared by polymerizing a diphenol compound of formula (2) or (4), a diol compound of formula (1) or (5), and a halogenated carbonyl compound. The diphenol compound of formula (4) is produced by polymerizing the diphenol compound of formula (2) and a halogenated carbonyl compound by solution or interfacial polymerization. An electrophotographic photoconductor has an electroconductive support and a photoconductive layer formed thereon containing the above-mentioned aromatic block polycarbonate resin. An electrophotographic image forming method or apparatus employs the above-mentioned photoconductor. A process cartridge holds therein the photoconductor and at least one of the electrophotographic image forming units.

Abstract: An electrophotographic photoconductor having an electroconductive support, and a photoconductive layer formed thereon and containing an aromatic polycarbonate resin having a structural unit of formula (3) shown in the specification. The polycarbonate resin is produced from a diphenol compound of the formula (1) shown in the specification.

Abstract: An electrophotographic photoconductor has an electroconductive support and a photoconductive layer which is formed thereon and contains at least one resin of a polyurethane resin, a polyester resin, or a polycarbonate resin, each resin having at least a structural unit of formula (1): 1

Abstract: An electrophotographic photoreceptor for an electrophotographic image forming apparatus which has a laser diode or a light emitting diode emitting a light having a wavelength of 350 to 500 nm as an image writing light source, wherein the photoreceptor includes a photosensitive layer including a deactivating agent.

Abstract: An aromatic block polycarbonate resin is prepared by polymerizing a diphenol compound of formula (2) or (4), a dial compound of formula (1) or (5), and a halogenated carbonyl compound. The diphenol compound of formula (4) is produced by polymerizing the diphenol compound of formula (2) and a halogenated carbonyl compound by solution or interfacial polymerization. An electrophotographic photoconductor has an electroconductive support and a photoconductive layer formed thereon containing the above-mentioned aromatic block polycarbonate resin. An electrophotographic image forming method or apparatus employs the above-mentioned photoconductor. A process cartridge holds therein the photoconductor and at least one of the electrophotographic image forming units.

Abstract: An electrophotographic photoreceptor in which at least a photosensitive layer is provided above an electroconductive substrate, the outermost surface layer of the electroconductive substrate contains at least an inorganic filler, a binder resin, and an aliphatic polyester, or, alternatively, the outermost surface layer of the electroconductive substrate contains at least an inorganic filler and a binder resin and the binder resin is a copolymer polyarylate having an alkylene-arylcarboxylate structural unit, also an image forming method, image forming apparatus, and image forming apparatus processing unit in which the electrophotographic photoreceptor is used.

Abstract: An electrophotographic photoconductor has an electroconductive support and a photoconductive layer which is formed thereon and contains at least one resin of a polyurethane resin, a polyester resin, or a polycarbonate resin, each resin having at least a structural unit of formula (1): wherein R1, R2, R3, a, b, and n are the same as those specified in the specification. An electrophotographic image forming apparatus and method, and a process cartridge employ the above photoconductor.

Abstract: An electrophotographic photoconductor comprising at least an electroconductive support and a photoconductive layer which is formed on said electroconductive support, the outermost layer of the photoconductor contains particles comprising a polyorganosiloxane-containing phase which contains polyorganosiloxane and an organic polymer-containing phase which contains organic polymer without silicon and has a polyorganosiloxane content which is less than the polyorganosiloxane-containing phase, each phase being exposed at the top surface of the photoconductor.

Abstract: An electrophotographic photoconductor has an electroconductive support, and a charge generation layer and a charge transport layer successively formed on the electroconductive support, the charge transport layer allowing any monochromatic light with a wavelength in a wavelength region of 390 to 460 nm to pass through and exhibiting a fluorescence generation coefficiency of 0.8 or less when irradiated with the monochromatic light. An electrophotographic image forming apparatus and a process cartridge employ the above-mentioned photoconductor.

Abstract: A method of producing an aromatic polycarbonate resin includes the step of carrying out solution polymerization of a diphenol compound having a triarylamine structure with a diol compound of formula (I): wherein R1 and R2 are each independently a substituted or unsubstituted alkyl croup, a substituted or unsubstituted aryl group, or a halogen atom; a and b are each independently an integer of 0 to 4: and Y is —COO— or in which Z is a substituted or unsubstituted bivalent aliphatic group or a substituted or unsubstituted arylene group. In addition, an electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon containing as an effective component the above-mentioned aromatic polycarbonate resin prepared by the solution polymerization.

Abstract: An electrophotographic photoconductor having an electroconductive support, and a photoconductive layer formed thereon and containing an aromatic polycarbonate resin having a structural unit of formula (3) shown in the specification. The polycarbonate resin is produced from a diphenol compound of the formula (1) shown in the specification.

Abstract: An image bearing material including a matrix resin and, within the matrix resin, a core/shell graft copolymer including a core including one or more polymers and a shell including a graft polymer which has a linear chain connected with the core and which is formed from one or more monomers. The image bearing material is preferably used for a surface layer of an electrophotographic photoreceptor, an intermediate transfer medium, and the like image bearing members to improve the abrasion resistance thereof.

Abstract: An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon containing as an effective component an aromatic polycarbonate resin having a structural unit of formula (2) and a structural unit with charge transporting properties, each of the structural units being contained in an amount of 5 wt. % or more of the total weight of the polycarbonate resin. There is disclosed an aromatic polycarbonate resin having a structural unit of formula (1) and the structural unit of formula (2), with the relationship between the composition ratios being 0<k/(k+j)<1 when the composition ratio of the structural unit (1) is k and that of the structural unit (2) is j, or an aromatic polycarbonate resin having a repeat unit of formula (3). The formulas (1) to (3) are specified in the specification.

Abstract: An electrophotographic photoreceptor for an electrophotographic image forming apparatus which has a laser diode or a light emitting diode emitting a light having a wavelength of 350 to 500 nm as an image writing light source, wherein the photoreceptor includes a photosensitive layer including a deactivating agent.