Abstract
The effects of purification of metal-free phthalocyanine pigment uniformly dispersed in polymer matrix on the electrophotographic properties of photoreceptor have been studied. Metal-free phthalocyanine was purified by a simple sublimation technique. The photoreceptor containing of the pure phthalocyanine pigments exhibited the high charge acceptance and the high photosensitivity under the positive corona charging. The carrier generation effciency was increased rapidly by the once time of purification, and then decreased with number of repeating Purification of phthalocymine pigment. The effects of purification on the electrophotographic sensitivity of metal-free phthalocyanine-polymer photoreceptor is deduced to be explained by a convolution of the carrier generation and transport efficiencies by the purification of phthalocyanine pigment.
