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Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

  • US 20050100805A1
  • Filed: 08/28/2003
  • Published: 05/12/2005
  • Est. Priority Date: 08/30/2002
  • Status: Active Grant
First Claim
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1. An electrophotographic photosensitive member comprising a conductive support and a photosensitive layer provided on the support, wherein;

  • said photosensitive layer contains at least one charge-transporting material;

    wherein at least one of said charge-transporting material contained in said photosensitive layer is a charge transporting material having a structure represented by the following Formula (1) and having a molecular weight of from 1,500 to 4,000; and

    the charge-transporting material having a structure represented by the following Formula (1) and having a molecular weight of from 1,500 to 4,000 is held in a proportion of from 90% by weight to 100% by weight based on the total weight of the charge transporting material contained in said photosensitive layer;

    embedded imagewherein Ar101 to Ar108 each independently represent a substituted or unsubstituted monovalent aromatic carbocyclic group or a substituted or unsubstituted monovalent aromatic heterocyclic group, and Z11 to Z15 each independently represent a substituted or unsubstituted divalent aromatic carbocyclic group or a substituted or unsubstituted divalent aromatic heterocyclic group, and wherein one of Z11 to Z15 in Formula (1) is a substituted or unsubstituted dibenzothiophenylene, and the balance are each a substituted or unsubstituted biphenylene group.

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