Patent ID: 7186489

Claim:
A cylindrical electrophotographic photosensitive member which comprises a cylindrical support and an organic photosensitive layer having a cured surface layer provided on the cylindrical support, wherein; a plurality of grooves each having width in the range of from 0.5 μm to 40 μm are formed on the peripheral surface of said electrophotographic photosensitive member substantially in the peripheral direction of the peripheral surface; the number of the grooves is from 20 lines to 1,000 lines per 1,000 μm in width in the generatrix direction of the peripheral surface; the peripheral surface of said electrophotographic photosensitive member has a modulus of elastic deformation of from 45% to 65%; and the peripheral surface of said electrophotographic photosensitive member has a universal hardness value HU of from 150 N/mm 2 to 210 N/mm 2 .