Electrophotographic photoreceptor and image forming apparatus

An electrophotographic photoreceptor, comprising:

• a cylindrical substrate comprising an outer circumferential surface, an end face, an outer chamfered face located between the outer circumferential surface and the end face, the outer chamfered face being continuous with the outer circumferential surface, and an inner chamfered face located between the outer chamfered face and the end face;
• and
• a surface layer located on the outer circumferential surface;
• wherein a surface roughness Sa of the outer chamfered face is larger than a surface roughness Sa of the inner chamfered face.

An electrophotographic photoreceptor comprising:

• a cylindrical substrate comprising an outer circumferential surface, an end face, an outer chamfered face located between the outer circumferential surface and the end face, the outer chamfered face being continuous with the outer circumferential surface, and an inner chamfered face located between the outer chamfered face and the end face;
• and
• a surface layer located on the outer circumferential surface;
• wherein a surface roughness Sa of the outer chamfered face is larger than a surface roughness Sa of the outer circumferential surface, and
• a surface roughness Sa of the inner chamfered face is larger than the surface roughness Sa of the outer circumferential surface,
• wherein the surface roughness Sa of the outer circumferential surface is 1 nm or more and 140 nm or less,
• the surface roughness Sa of the outer chamfered face is 180 nm or more and 1000 nm or less, and
• the surface roughness Sa of the inner chamfered face is 180 nm or more and 1000 nm or less.