2009 Volume 48 Issue 3 Pages 152-161
An electrophotographic single layer organic photoreceptor consisting of relatively low concentrations of phthalocyanine pigments dispersed in an insulating binder polymer, which is generally referred to as a high gamma photoreceptor, shows the induction effect. The photo-induced and dark discharge characteristics of the high gamma photoreceptors consisting of x-type metal-free phthalocyanine pigment and polyester polymer are well described by our theoretical model which takes into account of the structural trap. We have found that the good charge acceptance and the high gamma characteristics depend on structural traps. It is mathematically simulated that the photoresponse to digital image exposure is not deteriorated in spite of the charge carrier trapping by structural traps during carrier transport.
