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Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

  • US 20040043312A1
  • Filed: 05/31/2002
  • Published: 03/04/2004
  • Est. Priority Date: 11/13/1998
  • Status: Abandoned Application
First Claim
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1. An electrophotographic photosensitive member, comprising:

  • an electroconductive support and a photosensitive layer disposed on the electroconductive support;

    wherein the photosensitive layer comprises a polymerizate of a hole-transporting compound having at least two chain polymerization function groups in its molecule represented by formula (1) below;

    (P1)a

    A—

    (Z—

    (P2)d)b



    (1), wherein A denotes a hole-transporting group, P1 and P2 independently denote a chain polymerization function group and Z denotes a bonding organic group;

    a and 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 (P1)a— and



    (Z—

    (P2)d)b as in the formula (1) would provide a hole-transporting compound that is a compound represented by a formula selected from formulae (2), (3), (4) and (6), or a condensed cyclic hydrocarbon compound or condensed heterocyclic compound having a group represented by formula (5) below;

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