An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2):

##STR00001## (in Formulas (1) and (2), R.sup.10, R.sup.11, R.sup.20 or R.sup.21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X.sup.1 and X.sup.2 each independently represent a nitrogen atom or a substituted or unsubstituted carbon atom, Y.sup.1 and Y.sup.2 each independently represent an oxygen atom, a sulfur atom, a selenium atom, or NH, and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or a monovalent organic group:

##STR00002##

An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2):

##STR00001## (in Formulas (1) and (2), R.sup.10, R.sup.11, R.sup.20, or R.sup.21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X.sup.1 and X.sup.2 each independently represent a nitrogen atom or a substituted or unsubstituted carbon atom, Y.sup.1 and Y.sup.2 each independently represent an oxygen atom, a sulfur atom, a selenium atom, or NH, and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or a monovalent organic group:

##STR00002##

An electrophotographic photosensitive member can provide images in which black spots and fogging are suppressed and density unevenness due to coating unevenness of the charge generation layer is suppressed. The charge generation layer of the electrophotographic photosensitive member contains a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound, and an amide compound represented by a formula (1), and a nitrogen atom in a heterocyclic ring of the nitrogen-containing heterocyclic compound has a substituent. ##STR00001##