Patent ID: 7371492

Claim:
A photoconductive element comprising an electrically conductive support, an electrical barrier layer disposed over said electrically conductive support, and disposed over said barrier layer, a charge generation layer capable of generating charge carriers when exposed to actinic radiation, said barrier layer comprising a crosslinker and a polymer comprising the formula: wherein: a is 0 or 1; R and R′ independently represent H, CH 3 , CH 2 CO 2 R 4 where R 4 represents an alkyl group R 1 and R 2 and R 3 independently represent alkylene or alkyleneoxy groups having from about 2 to 12 atoms; X and X′ independently represent H, —OH, —CO 2 H, —OC(O)CH═CH 2; Y and Y′ independently represent bridging moieties such as —C 6 H 4 —and —OC(O)—, wherein m and n are numbers between 1 and 100 and (m+n=100) which represents the mole percentage of monomer repeat units in the polymer, and wherein the polymer has a molecular weight of between 5000 and 500,000 amu.