An electrophotographic photosensitive member (1) includes a conductive substrate (2) and a photosensitive layer (3). The photosensitive layer (3) contains a charge generating material and a compound represented by general formula (1) shown below. In general formula (1), R.sup.1 and R.sup.2 each represent, independently of one another: a C1-20 alkyl group optionally having at least one of a C6-14 aryl group optionally having a substituent and a C2-20 alkoxycarbonyl group; a C6-14 aryl group optionally having a C1-20 alkyl group; a C3-10 cycloalkyl group; or a C1-6 alkoxy group. ##STR00001##

An electrophotographic photosensitive member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains at least a charge generating material and a compound represented by general formula (1). In general formula (1), R.sup.1 represents an aryl group having a carbon number of at least 6 and no greater than 22 and optionally having an alkyl group having a carbon number of at least 1 and no greater than 10, an alkyl group having a carbon number of at least 3 and no greater than 20, an aralkyl group having a carbon number of at least 7 and no greater than 20, a cycloalkyl group having a carbon number of at least 3 and no greater than 20, or an alkoxy group having a carbon number of at least 1 and no greater than 6. Chemical groups R.sup.2 each represent a halogen atom.

##STR00001##

An electrophotographic photosensitive member (1) includes a conductive substrate (2) and a photosensitive layer (3). The photosensitive layer (3) contains a charge generating material and a compound represented by general formula (1) shown below. In general formula (1), R.sup.1 and R.sup.2 each represent, independently of one another: a C1-20 alkyl group optionally having at least one of a C6-14 aryl group optionally having a substituent and a C2-20 alkoxycarbonyl group; a C6-14 aryl group optionally having a C1-20 alkyl group; a C3-10 cycloalkyl group; or a C1-6 alkoxy group.

##STR00001##

An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer has a single-layer structure and contains a charge generating material and a compound represented by general formula (1) shown below. In the general formula (1), R.sup.1 and R.sup.2 each represent, independently of each other: an alkyl group having 1 to 12 carbon atoms and optionally substituted by an alkoxy group having 1 to 6 carbon atoms or an alkoxycarbonyl group having 2 to 6 carbon atoms; an aryl group having 6 to 14 carbon atoms and optionally substituted by an alkyl group having 1 to 6 carbon atoms; an aralkyl group having 7 to 20 carbon atoms; or a cycloalkyl group having 3 to 10 carbon atoms. X represents S or SO.sub.2. ##STR00001##

The present invention relates to an electrophotographic photoreceptor comprising: a conductive support; and a photosensitive layer on the conductive support, wherein the photosensitive layer contains a charge transport substance, a binder resin, and a compound which has a molecular weight of equal to or less than 350, and is represented by General Formula (1).

An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer has a single-layer structure and contains a charge generating material and a compound represented by general formula (1) shown below. In the general formula (1), R.sup.1 and R.sup.2 each represent, independently of each other: an alkyl group having 1 to 12 carbon atoms and optionally substituted by an alkoxy group having 1 to 6 carbon atoms or an alkoxycarbonyl group having 2 to 6 carbon atoms; an aryl group having 6 to 14 carbon atoms and optionally substituted by an alkyl group having 1 to 6 carbon atoms; an aralkyl group having 7 to 20 carbon atoms; or a cycloalkyl group having 3 to 10 carbon atoms. X represents S or SO.sub.2.

##STR00001##

A photoreceptor for electrophotography and an electrophotography device having the same reduces wear loss of the photoreceptor surface and stably obtaining a favorable image for long time. The photoreceptor for electrophotography includes a conductive substrate and a charge transport layer provided on the conductive substrate. The charge transport layer contains a charge transport material, a resin binder, and an inorganic oxide filler surface-treated with a silane coupling agent. A difference (SPa) in a dipole-dipole force component that is a Hansen solubility parameter between the charge transport material and the silane coupling agent satisfies a relationship SPa<1.0. A difference (SPb) in a London dispersion force component that is a Hansen solubility parameter between the resin binder and the silane coupling agent satisfies a relationship SPb<2.5.

An electrophotographic photosensitive member includes a surface layer containing a charge transporting material and a specific polyester resin having a structure including a specific branched chain.

An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, a binder resin, and an additive. The additive contains a carboxylic acid anhydride. A reduction potential of the carboxylic acid anhydride is at least 1.40 V versus a reference electrode (Ag/Ag.sup.+). The carboxylic acid anhydride is contained in an amount of at least 0.02 parts by mass and no greater than 10.00 parts by mass relative to 100 parts by mass of the binder resin.

An electrophotographic photoreceptor includes at least a photosensitive layer and a protective layer sequentially layered on a conductive support, wherein the protective layer contains a cured product of a curable composition containing p-type semiconductor fine particles, an n-type organic semiconductor, and a polymerizable compound.