The invention provides an electrophotographic photoreceptor having a
cylindrical support, and a charge-generating layer and a
charge-transporting layer on or above the cylindrical support, wherein
the thickness of the charge-generating layer is increased from the
central portion in the axial direction of the cylindrical support towards
both end portions thereof, and the difference in thickness between the
two end portions is 2.5% or less of an average thickness of the
charge-generating layer. Also disclosed are a method of producing the
electrophotographic photoreceptor, a process cartridge including the
electrophotographic photoreceptor, and an image-forming apparatus.