A method for photo etching and photo deep printing with the use of thick do with the gap breakage and / or caused alpha rays - aetzspuren of tinted photographs

摘要

This invention relates generally to the formation of images on non-photo-receptive surfaces. In the past the reproduction of images has involved the initial step of screening the image. The present method does not require such screening and the image produced bears a quantitative and positional relationship to the silver grains present in the photograph from which the image is being produced.