Electrophotographic photoreceptor, process cartridge and image forming apparatus

An electrophotographic photoreceptor comprising:

• a photosensitive layer on a conductive substrate, an outermost layer of the electrophotographic photoreceptor including:
• a cured film of a composition which comprises at least one charge transporting compound (a) having a charge transporting skeleton and at least two structural units represented by R—O—CO—CR′═CH—R″ in the same molecule, and
• at least one polycarbonate resin;
• wherein a ratio (IA/IC) of an absorption peak intensity (IA) resulting from stretching vibration of a carbonyl group originating from the structural unit represented by R—O—CO—CR′═CH—R″ of the charge transporting compound (a) to an absorption peak intensity (IC) resulting from stretching vibration of a carbonyl group originating from the polycarbonate resin in an IR absorption spectrum of the outermost layer is from about 0.5 to about 10, and
• a width at half maximum of the absorption peak of the absorption peak intensity (IA) is about 25 cm−1 or more,
• wherein either R or R′ is bonded to the charge transporting skeleton;
• wherein, in a case in which R is bonded to the charge transporting skeleton, R represents a single bond or a divalent linking group which may have a substituent group, and R′ represents a hydrogen atom or an alkyl group which may have a substituent group;
• wherein, in a case in which R′ is bonded to the charge transporting skeleton, R′ represents a divalent linking group which may have a substituent group, and R represents a hydrogen atom or an alkyl group which may have a substituent group;
• R″ represents a hydrogen atom or an alkyl group which may have a substituent group;
• wherein the divalent linking group represented by R or R′ is selected from the group consisting of an alkylene group, an arylene group, —O—, —COO—, —CO— and a combination thereof;
• and wherein the substituent group is selected from the group consisting of an alkyl group, an alkoxy group, an ester group, and an acyl group.