Improved electrographic process for producing a plurality of copies

摘要

An electrographic process for producing, an electrostatic charge image corresponding to an image to be recorded on a record sheet having a dielectric material layer, by modulating a flow of corona ions by an electrostatic latent image formed on a photosensitive screen is disclosed. The process comprises changing a bias electric voltage applied across two electric conductive layers of the photosensitive screen in a direction such that attenuation of the electrostatic latent image formed on the photosensitive layer is compensated in response to the number of copies to be obtained.