An electrophotographic photoreceptor having sufficient solvent resistance and crack resistance in a liquid developer and having excellent electrical characteristics, a process for producing the photoreceptor, and an electrophotographic device are provided at low cost. The electrophotographic photoreceptor includes a conductive base; and a charge generation layer and a charge transport layer sequentially provided on the conductive base. The charge transport layer contains a binder resin that is a copolycarbonate resin having a structure represented by general formula (1) below:

##STR00001##

and a hole transport material that is a compound having a structure represented by general formula (2) below:

##STR00002##

An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer of a single layer. The photosensitive layer contains a charge generating material, a binder resin, a hole transport material, and an electron transport material. The binder resin includes a polyester resin and a polycarbonate resin. The polyester resin includes a first repeating unit represented by general formula (1) shown below and a second repeating unit represented by general formula (2) shown below. The polycarbonate resin includes a third repeating unit represented by general formula (3) shown below and a fourth repeating unit represented by general formula (24) shown below.

##STR00001##

A content percentage of the polyester resin in the photosensitive layer is at least 0.3% by mass and no greater than 7.0% by mass.

A bis-butadiene derivative is represented by general formula (1) shown below. ##STR00001##
In general formula (1), Ra, Rb, and Rc each represent, independently of one another, an alkyl group having a carbon number of at least 1 and no greater than 8 or an alkoxy group having a carbon number of at least 1 and no greater than 8. l and m each represent, independently of one another, an integer of at least 0 and no greater than 5. n represents an integer of at least 0 and no greater than 4. Chemical groups Ra may be the same as or different from each other. Chemical groups Rb may be the same as or different from each other. Chemical groups Rc may be the same as or different from each other.

A photosensitive member (1) includes a conductive substrate (2) and a photosensitive layer (3). The photosensitive layer is a single-layer photosensitive layer (3c). The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The hole transport material includes a triphenylamine derivative represented by general formula (HT). The electron transport material includes a compound represented by general formula (ET1), (ET2), (ET3), (ET4), or (ET5). The binder resin includes a polyarylate resin represented by general formula (1) ##STR00001## ##STR00002##

An electrophotographic photosensitive member includes a photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, and a binder resin. The binder resin contains a polyarylate resin represented by general formula (1). In general formula (1), r and s each represent an integer of at least 0 and no greater than 49 and t and u represents an integer of at least 1 and no greater than 50. Furthermore, r+s+t+u=100 and r+t=s+u. X and Y each represent, independently of one another, a divalent group represented by chemical formula (1-1), (1-2), (1-3), or (1-4). ##STR00001##

A method for producing an electrophotographic photosensitive member includes an electrically conductive substrate and a photosensitive layer. The method includes applying an application liquid for photosensitive layer formation containing a solvent, a binder resin, and a hole transport material directly or indirectly onto the electrically conductive substrate, and removing a portion of the solvent, to form the photosensitive layer. The solvent contains a first solvent that is an alcohol having a carbon number of at least 1 and no greater than 3, and a second solvent other than the first solvent. The binder resin includes a polyarylate resin that is a polymerization product of monomers including a first monomer represented by general formula (1) and a second monomer represented by general formula (2), ##STR00001##

Provided is a photoconductor for electrophotography having high sensitivity, low residual potential, and good wear resistance and contamination resistance, and that is less likely to cause light-induced fatigue and filming, and also exhibits good potential stability before and after repeated printing, even without a surface protective layer formed on a photosensitive layer. Provided also are a process of producing the photoconductor and an electrophotographic apparatus. The photoconductor for electrophotography may be a single-layer-type photoconductor or a multi-layer-type photoconductor and includes a conductive substrate and a photosensitive layer formed on the conductive substrate and including a hole transport material having a structure represented by general formula (1) below; a binder resin having a repeating structure represented by general formula (2) below; and at least one electron transport material having a structure represented by general formulae (ET1) to (ET3) below: ##STR00001##

An electrophotographic photoreceptor of a negatively-chargeable laminate-type includes a conductive substrate; a charge generation layer provided on the conductive substrate and including a charge generating material; and a charge transport layer provided on the charge generation layer and containing, as a binder resin, a copolymerized polycarbonate resin having a repeating unit represented by Formula (1); as a hole transporting substance, a compound having a structure represented by Formula (2); as an electron transporting substance, a compound having a structure represented by Formula (3), and, as an antioxidant, a compound represented by Structural Formula (4), where a mass ratio H/(B+H) represents a ratio of mass (H) of the hole transporting substance with respect to a sum of mass (B) of the binder resin and the mass (H) of the hole transporting substance, and satisfies Formula (5), 0.20 by massH/(B+H)0.35 by mass, ##STR00001##

The present invention relates to an electrophotographic photoreceptor including a conductive support and a photosensitive layer on the conductive support, and the photosensitive layer contains a polymer A containing a repeating structural unit represented by a specific formula, and a polymer B containing a repeating structural unit represented by a specific formula. In addition, the present invention relates to an electrophotographic photoreceptor cartridge and an image forming apparatus including the electrophotographic photoreceptor.

An image forming apparatus includes an image bearing member and a static elimination device. The static elimination device irradiates static elimination light onto a circumferential surface of the image bearing member. The image bearing member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The static elimination light has a wavelength of at least 600 nm and no greater than 800 nm. The photosensitive layer has an optical absorption coefficient of at least 600 cm.sup.1 and no greater than 1,500 cm.sup.1 with respect to light having a wavelength of 660 nm.