A device for cleaning a photosensitive screen having a multitude of fine openings for use in image formation wherein primary and secondary electrostatic latent images are formed on the screen by voltage application, the device being constructed with means for rubbing the photosensitive screen, wall means...http://www.google.com/patents/US4428664?utm_source=gb-gplus-sharePatent US4428664 - Method and device for cleaning photosensitive screen in an image forming apparatus
