Electrophotographic photosensitive member process cartridge and electrophotographic apparatus

A process for producing an electrophotographic photosensitive member, comprising a photosensitive layer-forming step of forming a photosensitive layer on an electroconductive support;

• said photosensitive layer-forming step including a step of forming a coating layer comprising a hole-transporting compound having at least two chain-polymerization function groups on the electroconductive support, and a step of polymerizing the hole-transporting compound in the coating layer by irradiation of the coating layer with electron-beam radiation to provide a three-dimensional cross-linked polymerizate, wherein the hole-transporting compound is represented by formula (1) below:
• (P1aAZ-(P2)d)b (1)
• wherein A denotes a hole-transporting group, P1 and P2 independently denote an unsaturated polymerization function group and Z denotes a bonding organic group;
• a, b and d are independently an integer of at least 0 satisfying a+b×d≧2 provided that if a≧2, plural groups P1 can be identical or different;
• if b≧2, plural groups Z can be identical or different;
• and if b×d≧2, plural groups P2 can be identical or different;
• and the hole-transporting group A is such that a combination of A with a number (a+b) of hydrogen atoms instead of (P1a and ZP2)d)b as in the formula (1) would provide a hole-transporting compound that is a compound represented by formula (2) or (3) below:
• wherein R1, R2, R3 and R4 independently denote an alkyl group, aralkyl group or aryl group each capable of having a substituent;
• Ar1 and Ar2 independently denote an arylene group capable of having a substituent;
• and m is 0 or 1;
• wherein R5, R6, R9 and R10 independently denote an alkyl group, aralkyl group or aryl group each capable of having a substituent;
• at least two of R5, R6, R9 and R10 are aryl groups each capable of having a substituent;
• R7 and R8 independently denote an alkylene group or arylene group each capable of having a substituent and Q denotes an organic group capable of having a substituent.