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: Disclosed are an organic dye having a specific structure, a photoelectric conversion material containing the dye, a semiconductor electrode formed of a substrate having an electrically conductive surface, a semiconductor layer coated on the electrically conductive surface and the above dye adsorbed on the surface, and a photoelectric conversion device to which the above dye is applied. The present invention uses the above dye and can therefore provide a photoelectric conversion device excellent in photoelectric conversion efficiency, and the photoelectric conversion device is suitable for use in a solar cell or the like.

Abstract: A benzobisthiazole compound having a specific formula, and a benzobisthiazole polymer having a specific benzothiazole structure. An organic film including the benzobisthiazole polymer, the benzobisthiazole compound and/or a polymer obtained from the benzobisthiazole compound. An organic thin-film transistor including an organic semiconductor layer including the organic film; a pair of electrodes configured to flow an electric current through the organic semiconductor layer; and a third electrode configured to apply a voltage to the organic semiconductor layer.

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 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: Disclosed are an organic dye having a specific structure, a photoelectric conversion material containing the dye, a semiconductor electrode formed of a substrate having an electrically conductive surface, a semiconductor layer coated on the electrically conductive surface and the above dye adsorbed on the surface, and a photoelectric conversion device to which the above dye is applied. The present invention uses the above dye and can therefore provide a photoelectric conversion device excellent in photoelectric conversion efficiency, and the photoelectric conversion device is suitable for use in a solar cell or the like.

Abstract: Disclosed are an organic dye having a specific structure, a photoelectric conversion material containing the dye, a semiconductor electrode formed of a substrate having an electrically conductive surface, a semiconductor layer coated on the electrically conductive surface and the above dye adsorbed on the surface, and a photoelectric conversion device to which the above dye is applied. The present invention uses the above dye and can therefore provide a photoelectric conversion device excellent in photoelectric conversion efficiency, and the photoelectric conversion device is suitable for use in a solar cell or the like.

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: 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: Disclosed are an organic dye having a specific structure, a photoelectric conversion material containing the dye, a semiconductor electrode formed of a substrate having an electrically conductive surface, a semiconductor layer coated on the electrically conductive surface and the above dye adsorbed on the surface, and a photoelectric conversion device to which the above dye is applied.

Abstract: Disclosed is disclosed a process for producing a printed wiring board which comprises the steps of: a) exposing a wiring board having at least one photoconductive layer in which its chargeability is changed by light exposure on at least one surface of a conductive support which comprises an insulating substrate and at least one metal conductive layer provided at least one surface thereof through a resist pattern; b) charging the photoconductive layer to form an electrostatic latent image; c) forming a toner image on the photoconductive layer by toner developing treatment; d) removing a portion of the photoconductive layer to which no toner is attached by dissolution to form a resist image; and e) removing a portion of the metal conductive layer other than a portion where the resist image is formed by etching.

Abstract: Disclosed are a phthalocyanine composition suitable for use in an electrophotographic photoreceptor that exhibits a high charge potential and a high sensitivity and which exhibits stable performances without causing a change in various properties in repeated use, a process for the production thereof, and an electrophotographic photoreceptor to which the above phthalocyanine composition is applied. The present invention provides a phthalocyanine composition comprising a oxytitanium phthalocyanine and a metal-free phthalocyanine and having a crystal form having peaks at Bragg angles (2&thgr;±0.2°) of 7.0°, 9.0°, 14.1°, 18.0°, 23.7° and 27.3°, and having no peak at a Bragg angle (2&thgr;±0.2°) of 9.5°, in CuK&agr; 1.

Abstract: Disclosed are a phthalocyanine composition having main diffraction peaks at 7.0°, 9.0°, 14.1°, 18.0°, 23.7° and 27.3° of Bragg angles (2&thgr;±0.2°) in an X-ray diffraction spectrum with Cu K&agr;, a process for producing the same and an electrophotographic photoreceptor using the same.

Abstract: Disclosed is disclosed a process for producing a printed wiring board which comprises the steps of:

Abstract: Disclosed are a phthalocyanine composition suitable for use in an electrophotographic photoreceptor that exhibits a high charge potential and a high sensitivity and which exhibits stable performances without causing a change in various properties in repeated use, a process for the production thereof, and an electrophotographic photoreceptor to which the above phthalocyanine composition is applied.

Abstract: Oxytitanium phthalocyanine having a novel crystal form having excellent electrophotographic properties, such as a high charge potential, a high sensitivity and stable performances free from causing changes in various properties in repeated use, can be produced in the absence of a halogen substance, by carrying out the crystal transformation of amorphous oxytitanium phthalocyanine in a solvent comprising water and naphthalene.