Abstract: A methylol compound having a specific formula such that two triphenylamine groups each having two methylol groups are connected with each other by an oxygen atom, a methylene group, a vinylene group, or an ethylene group. The methylol compound is preferably prepared by subjecting a corresponding aldehyde compound to a reduction reaction in the presence of a reducing agent. The methylol compound is preferably used as a charge transport material.

Abstract: A bisazo compound represented by Chemical structure 1: wherein, Ar1 and Ar2 independently represent a substituted or non-substituted aryl group, when at least one of Ar1 and Ar2 has a substituent, the substituent is selected from the group consisting of an alkyl group having 1 to 4 carbon atoms, phenyl group, biphenyl group, naphthyl group, anthryl group, and pyrenyl group, R1, represents an alkyl group, an alkoxy group, a halogen atom, or nitrile group, R2 represents ethylene group or vinylene group, and n represents an integer of from 1 to 3 and when n is 2 or 3, R1s are independent from each other.

Abstract: An electrophotographic photoreceptor is provided, including an electroconductive substrate and a photosensitive layer located overlying the electroconductive substrate, wherein an outermost layer of the electrophotographic photoreceptor includes a resin including a graft copolymer in which a monomer having a polar group is graft polymerized to a polycarbonate resin, a polyarylate resin, or a copolymer thereof, and a filler; along with an image forming apparatus and a process cartridge using the electrophotographic photoreceptor.

Abstract: An electrophotographic photoreceptor, including an electroconductive substrate; and a photosensitive layer overlying the substrate, wherein the photosensitive layer comprises a complex azo pigment comprising an azo compound having the following formula (a): A(H)n??(a) wherein A represents a residue of an azo compound, bonded with n pieces of hydrogen atom through one or more heteroatom being N or O and forming a part of the residue A; H represents a hydrogen atom; and n represents an integer of from 1 to 9, and a pigment.

Abstract: An electrophotographic photoreceptor, including a charge generation layer and a charge transport layer on an electroconductive substrate, wherein the charge generation layer includes titanylphthalocyanine and a binder resin which is a crosslinked material of a resin comprising a polyvinylbutyral site having the following formula (1) and an isocyanate compound having the following formula (2): wherein R1 and R2 independently represent an alkyl group having 1 to 3 carbon atoms; k, l, m and n represent composition ratios and k+l is from 0.60 to 0.80, wherein k or l may be 0, m is from 0.02 to 0.03, and n is from 0.20 to 0.40; wherein A represents a substituted or unsubstituted organic group having 2 to 4 valences; and O represents an integer of from 2 to 4.

Abstract: A photoreceptor including a layer including a crosslinked material obtained by polymerizing at least a vinyl group-containing triarylamine compound, a radically polymerizable monomer which has at least three radically polymerizable groups in a molecule and has no charge transport structure, and an optional radically polymerizable polycarbonate. An image forming apparatus including the photoreceptor, a charger configured to charge the photoreceptor, a light irradiating device configured to irradiate the charged photoreceptor to form an electrostatic latent image; a developing device configured to develop the electrostatic latent image with a developer including a toner to form a toner image, and a transferring device configured to transfer the toner image onto a receiving material.

Abstract: A flame retardant that is arranged to improve the cold resistance and the productivity of a composition, a flame-retardant composition, an insulated wire, a wiring harness, and a method for manufacturing the flame-retardant composition. The flame retardant includes a pulverized natural mineral which is mainly composed of magnesium hydroxide, wherein the pulverized natural mineral is surface-treated with an organic high polymer such as polyolefin. The amount of surface treatment is within a range of 0.1 to 10 mass %. The flame-retardant composition includes 30 to 250 parts by mass of the flame retardant with respect to 100 parts by mass of an organic high polymer such as polyolefin. The insulated wire includes a conductor and the flame-retardant composition which covers the conductor, and the wiring harness includes the insulated wire.

Abstract: An image forming apparatus including at least an image bearing member having a substrate having a photosensitive layer thereon, the image bearing member to bear a latent electrostatic image on a surface thereof, a charging device to the surface of the image bearing member, an irradiation device to irradiate the surface of the image bearing member with light to form a 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 photosensitive layer includes naphthalene tetracarbonic acid diimide derivative as a charge transport material represented by the following Chemical Structure (1): In the Chemical Structure (1), Z represents a group represented by the following Chemical Formula (1): or the following Chemical Formula (2): —R9 ??Chemical Formula (2).

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 present invention provide a two-component anti-seizure agent for hot metal working process comprising the first aqueous solution and the second aqueous solution, wherein the first aqueous solution contains 10˜30 mass % of sodium silicate equivalent to anhydride to 100 mass % of total mass of the first aqueous solution, and the second aqueous solution contains at least one kind selected from a group consisting of: an organic acid and water-soluble amine salts thereof, an inorganic acid and water-soluble amine salts thereof, a water-soluble amine, a water-soluble alcohol, and a water-soluble metal chloride. When the two-component anti-seizure agent is applied onto disk-roll type guide shoes, it can be provided and maintained on the circumferential surface of the disk-roll type guide shoes without washed away by rolls' cooling water. Thereby, the anti-seizure agent does not adhere to rolls and the rolls and a pipe material do not cause slippage each other.

Abstract: A set of resin sheets includes a plurality of resin sheets. Each resin sheet is disposed in a site to be a surface recess or inner void in a ceramic green sheet to be laminated, and a plurality of such ceramic green sheets each with the resin sheet disposed therein are laminated and fired, whereupon the resin sheets are removed by thermal decomposition during the firing. In the set of resin sheets, the relation of Ta<Tb?Tc is satisfied wherein Ta (° C.) indicates an 80% weight reduction temperature of an uppermost resin sheet, Tb (° C.) indicates an 80% weight reduction temperature of a lowermost resin sheet, and Tc (° C.) indicates a 20% weight reduction temperature of a resin binder which is contained in the ceramic green sheets in which the green sheets are disposed.

Abstract: A bisazo compound represented by Chemical structure 1: wherein, Ar1 and Ar2 independently represent a substituted or non-substituted aryl group, when at least one of Ar1 and Ar2 has a substituent, the substituent is selected from the group consisting of an alkyl group having 1 to 4 carbon atoms, phenyl group, biphenyl group, naphthyl group, anthryl group, and pyrenyl group, R1, represents an alkyl group, an alkoxy group, a halogen atom, or nitrile group, R2 represents ethylene group or vinylene group, and n represents an integer of from 1 to 3 and when n is 2 or 3, R1s are independent from each other.

Abstract: An electrophotographic photoreceptor is provided, including an electroconductive substrate and a photosensitive layer located overlying the electroconductive substrate, wherein an outermost layer of the electrophotographic photoreceptor includes a resin including a graft copolymer in which a monomer having a polar group is graft polymerized to a polycarbonate resin, a polyarylate resin, or a copolymer thereof, and a filler; along with an image forming apparatus and a process cartridge using the electrophotographic photoreceptor.

Abstract: The present invention relates to triphenylene compounds useful, for example, in an electrophotographic photoreceptor, and to a method for manufacturing these compounds.

Abstract: The present invention relates to triphenylene compounds useful, for example, in an electrophotographic photoreceptor, and to a method for manufacturing these compounds.

Abstract: A set of resin sheets includes a plurality of resin sheets. Each resin sheet is disposed in a site to be a surface recess or inner void in a ceramic green sheet to be laminated, and a plurality of such ceramic green sheets each with the resin sheet disposed therein are laminated and fired, whereupon the resin sheets are removed by thermal decomposition during the firing. In the set of resin sheets, the relation of Ta<Tb?Tc is satisfied wherein Ta (° C.) indicates an 80% weight reduction temperature of an uppermost resin sheet, Tb (° C.) indicates an 80% weight reduction temperature of a lowermost resin sheet, and Tc (° C.) indicates a 20% weight reduction temperature of a resin binder which is contained in the ceramic green sheets in which the green sheets are disposed.

Abstract: [Object] This invention makes it possible to efficiently order repair parts for which there is little demand and which is difficult to predict.

Abstract: In construction of a body unit for a string musical instrument such as an electric guitar, a planar pattern panel bearing a fashionable graphic design is interchangeably sandwiched between a body top of the musical instrument and a substantially transparent cover panel detachably coupled to the body top. Aesthetic properties of the musical instrument can be easily adjusted by an individual user without any assistance by professionals in accordance with personal preference and/or situation in performance by interchanging the pattern panel.