Printing member for electrostatic printing having a high crystallization region of an intrinsic semiconductor layer formed by irradiation with light and method of manufacturing thereof

Abstract

A printing member for electrostatic photocopying including a substrate having a conductive surface; and a photoelectrically-sensitive, electrically chargeable layer on the conductive surface of the substrate; wherein the photo-electrically-sensitive, electrically chargeable layer has (a) a first layer member formed on the conductive surface of the substrate, the first layer member having a P or N or I type first non-single-crystal semiconductor layer or a first semi-insulating or insulating layer, (b) a second layer member formed on the first layer member, the second layer member being a first laminate member having an I type second non-single-crystal semiconductor layer and an I type third non-single-crystal semiconductor layer having a small energy band gap than that of the second non-single-crystal semiconductor layer, and (c) a third layer member formed on the second non-single-crystal semiconductor layer, the third layer member having an I type fourth non-single-crystal semiconductor layer having an equal to or larger energy band gap than that of the second non-single-crystal semiconductor layer, or a second semi-insulating or insulating layer, or a second laminate member having the fourth non-single-crystal semiconductor layer or second semi-insulating layer and the insulating layer; and wherein the third non-single-crystal semiconductor layer has a higher degree of crystallization than the second non-single-crystal semiconductor layer.

Dependencies are inferred from the claim text.