Elektrophotographisches Verfahren zum kapazitiven Speichern von Bildern

摘要

1. A photosensitive plate comprising a photoconductive layer having persistent internal polarization characteristics is interposed between an electrically insulating layer and an electrically conductive layer and used in a method for forming a latent electrostatic image on the photosensitive plate by first exposing the image onto the photoconductive layer and simultaneously applying a DC. corona discharge to the photoconductive layer. An AC. corona discharge is then applied to the dark patterns of the latent electrostatic image and the photosensitive plate is then uniformly irradiated to enhance the contrast of the latent electrostatic image.