This invention relates to a method of forming an image, characterized by applying voltage on a photosensitive material having a photoconductive layer and an electroconductive layer on a substrate in such a manner as to make said electroconductive layer positive and said photoconductive layer negative while irradiating optical information on said positive electroconductive layer or said negative photoconductive layer, thereby causing an anodic ion reaction on the interface between said electroconductive layer and said photoconductive layer to selectively change the spectral absorption properties of at least one of said electroconductive layer and said photoconductive layer depending on the irradiated optical information; said photosensitive material comprising an electroconductive layer of metal as a simple substance, its alloy or its metal compound applied on a substrate and a photoconductive layer overlaid on said electroconductive layer.