A complex type electrophotographic plate comprises a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 .mu.m; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material...http://www.google.com/patents/US4346157?utm_source=gb-gplus-sharePatent US4346157 - Complex type electrophotographic plate
