Lithographic printing plate and method for the preparation of same

摘要

The method of preparing a lithographic printing plate containing ink receptive printing image areas and water receptive non-printing background areas in which the plate consists of a substrate having on one side thereof in sequence an electrically conductive layer and a photoconductive layer consisting of fully crystalline inorganic photoconductive substance. The method comprises the steps of forming an electrostatic latent image on the surface of said photoconductive layer, developing the electrostatic latent image to define the ink receptive printing image areas on the surface, and applying to the surface an aqueous chromic acid solution.