Multiple copy electrophotographic reproducing method and apparatus

Abstract From the Canadian patent

ABRIDGEMENT, A method for obtaining multiple copies from apparatus including an electrophotographic member of the type in which the latent image is represented by charge not removed when toner is applied and thereafter transferred. The electrophotographic member with its latent image is repeatedly subjected to toning and transfer to respective multiple receptors without intervening charge and exposure. when the image quality deteriorates ouch as by reason of dark decay, additional copies can be provided if desired by again charging and exposing only once and thereafter toning and transferring the image transferred repeatedly again without intervening additional charge and exposure. The …