An electrophotographic photoreceptor includes a conductive substrate, and a lamination-type photosensitive layer disposed on the conductive substrate and having a charge generation layer and a charge transport layer, in which the charge transport layer contains a polyarylate resin having a dicarboxylic acid unit (A) represented by Formula (A) and a diol unit (B) represented by Formula (B), the charge generation layer contains, as a charge generation material, a chlorogallium phthalocyanine, and a value of a content of a binder resin to a total content of the binder resin and the charge generation material in the charge generation layer is more than 0.4 and less than 0.7,

##STR00001## in Formula (A), Ar.sup.A1 and Ar.sup.42 are each independently an aromatic ring which may have a substituent, L.sup.A is a single bond or a divalent linking group, and n.sup.A1 is 0, 1, or 2, in Formula (B), Ar.sup.B1 and Ar.sup.B2 are each independently an aromatic ring which may have a substituent, L.sup.B is a single bond, an oxygen atom, a sulfur atom, or C(Rb.sup.1)(Rb.sup.2), and n.sup.B1 is 0, 1, or 2, where Rb.sup.1 and Rb.sup.2 are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb.sup.1 and Rb.sup.2 may be bonded to each other to form a cyclic alkyl group.

An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer disposed on the conductive substrate, and a lamination-type photosensitive layer disposed on the undercoat layer and having a charge generation layer and a charge transport layer, in which the charge transport layer contains a charge transport material and a polyarylate resin, the polyarylate resin contains a dicarboxylic acid unit represented by Formula (A) and a diol unit represented by Formula (B), and an electrostatic capacity of the undercoat layer is 1.010.sup.10 F or more and 3.010.sup.9 F or less,

##STR00001## in Formula (A), Ar.sup.A1 and Ar.sup.A2 are each independently an aromatic ring which may have a substituent, L.sup.A is a single bond or a divalent linking group, and n.sup.A1 is 0, 1, or 2, in Formula (B), Ar.sup.B1 and Ar.sup.B2 are each independently an aromatic ring which may have a substituent, L.sup.B is a single bond, an oxygen atom, a sulfur atom, or C(Rb.sup.1)(Rb.sup.2)-, and n.sup.B1 is 0, 1, or 2, where Rb.sup.1 and Rb.sup.2 are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb.sup.1 and Rb.sup.2 may be bonded to each other to form a cyclic alkyl group.

Provided is an electrophotographic photosensitive member including: a support; and a photosensitive layer, wherein the photosensitive layer contains a hydroxygallium phthalocyanine crystal, and wherein the hydroxygallium phthalocyanine crystal contains a compound A having a dipole moment magnitude of 3.6 D or more and an SP value SP.sub.A of 11.5 (cal/cm.sup.3).sup.1/2 or more, and a compound B having a dipole moment magnitude of more than 0 to 2.0 D and an SP value SP.sub.B of 9.5 (cal/cm.sup.3).sup.1/2 or less.