The present invention relates to an electrophotographic photoreceptor comprising: a conductive support; and a photosensitive layer disposed on the conductive support, wherein the photosensitive layer includes a polyester resin containing a dihydric phenol residue and a dicarboxylic acid residue, and the dihydric phenol residue includes at least one dihydric phenol residue selected from the group of the specific dihydric phenol residues, and the other specific dihydric phenol residue.

A fluorine-containing resin particle contains 0 or more and 30 or less carboxyl groups per 10.sup.6 carbon atoms and 0 ppm or more and 3 ppm or less of a basic compound.

An electrophotographic photoreceptor comprising at least a photosensitive layer on a conductive substrate, wherein the photosensitive layer is a laminate having a charge transport layer and a charge generation layer, the charge transport layer contains four or more types of compounds each having a maximum absorption wavelength falling within a wavelength range of from 300 nm to 600 nm in a tetrahydrofuran solution at 25° C., and maximum absorption wavelengths falling within the wavelength range of at least four types of the compounds of said four or more types of the compounds are separated from each other by 10 nm or more.

An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer, wherein an outermost layer contains a compound having a structure represented by general formula (I) below:

##STR00001## where R.sub.1 and R.sub.2 each independently represent a C.sub.1-12 alkyl group or a C.sub.5-12 cycloalkyl group; R.sub.3 represents a hydrogen atom, a halogen atom, a substituted or unsubstituted C.sub.1-6 alkyl group, a substituted or unsubstituted C.sub.1-6 alkoxyl group, a C.sub.6-20 aryl group or a heterocycle group; X and Z each represent a single bond or a C.sub.1-6 alkylene group which may be substituted; and Y represents a OCO group or COO group. A method for manufacturing the photoreceptor and an electrophotographic device including the photoreceptor are additionally provided. The electrophotographic photoreceptor provides sufficient stain resistance and is less affected by temperature and humidity environments while maintaining various advantageous characteristics of photoreceptors.

A fluorine-containing resin particle contains 0 or more and 30 or less carboxyl groups per 10.sup.6 carbon atoms and 0 ppm or more and 3 ppm or less of a basic compound.

The present disclosure provides an electrophotographic photosensitive member having excellent dispersibility of fluorine atom-containing resin particles, and excellent durability, with an occurrence of a ghost suppressed. In the electrophotographic photosensitive member having a surface layer, the surface layer includes a fluorine atom-containing resin particle, a binder material, a charge transport substance, and a polymer A having a specific structural unit, wherein the binder material is a thermoplastic resin, and a film thickness of the surface layer is 35 μm or larger and 50 μm or smaller.

The present invention relates to an electrophotographic photoreceptor, which includes a conductive substrate; an undercoat layer disposed on the conductive substrate and capable of conforming to the contour of the conductive substrate, a photoconductor charge generation layer disposed on the undercoat layer and capable of conforming to the contour of the undercoat layer, and a charge transport layer disposed on the photoconductor charge generation layer. The charge transport layer contains a charge transport material, a binder resin, a fluorine-containing resin, and a plurality of polyhedral oligomeric silsesquioxane (POSS) particles evenly dispersed in the binder resin, and the POSS particles are interconnected with at least one fluorine group and at least two non-fluoridated groups. By adding approximately 1% of the POSS particles and lubricant nanoparticles, a life-time improvement of at least 20% is achieved for an OPC drum.

An image forming apparatus comprising an electrophotographic photosensitive member and a developing device for supplying a toner onto the electrophotographic photosensitive member, the developing device having the toner, wherein the electrophotographic photosensitive member has a surface layer comprising a binder resin (A), the toner has a toner particle, the toner particle has a core comprising a binder resin (B) and a wax and a shell layer formed on a surface of the core, the binder resin (A) has a prescribed structure: the wax comprises a prescribed monoester compound: and a process cartridge.

An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer on the conductive substrate. The electrophotographic photoreceptor has an outermost surface layer that contains fluorine-containing resin particles and a fluorine-containing graft polymer. The fluorine-containing resin particles contain 0 or more and 30 or less carboxy groups per 10.sup.6 carbon atoms. The outermost surface layer has a dielectric constant of 3.75 or more and 3.90 or less. The contact angle of pure water on the outermost surface layer is 90° or more.

A fluorine-containing resin particle contains 0 or more and 30 or less carboxyl groups per 10.sup.6 carbon atoms and 0 ppm or more and 3 ppm or less of a basic compound.