Abstract
In the electrophotographic process, the photoreceptor is most important devise in image forming unit. The photoreceptor has the structure that the photoconductive insulating film was installed in the conductive substrate, and it can form the electrostatic latent image on it by the photoconductivity. Although the material utilized for the photoreceptor was the inorganic material in the invention initial stage, organic materials were used in the present stage, because that organic materials were useful in view of easy molecular design for desired function. In this report, development of materials in photoreceptor was outlined mainly on the function of the photoreceptor.
