Cathode ray tube apparatus for recording and displaying color images

Claim 1

IN AN ASSEMBLY FOR VISUALLY AND CONTINUOUSLY DISPLAYING ELECTRICALLY TRANSMITTED SIGNALS REPRESENTATIVE OF INFORMATION WHICH IS SUBJECTED TO CHANGES: A CATHODE RAY TUBE HAVING A SUBSTANTIALLY LONGITUDINALLY EXTENDING FACEPLATE, A PLURALITY OF INDIVIDUAL WIRE SECTIONS EMBEDDED IN AND EXTENDING THROUGH THE FACEPLATE FOR TRANSFERRING TO THE EXTERIOR SURFACE OF THE FACEPLATE ELECTRICAL CHARGES AS THEY ARE IMPRESSED ON THE INNER WIRE SECTION ENDS BY THE IMPINGING ELECTRON BEAM AND IN ACCORDANCE WITH THE SIGNALS APPLIED TO THE TUBE, A DISPLAY SCREEN COOPERATING WITH THE TUBE, THE SCREEN COMPRISING A TRANSPARENT BASE PLATE, A CONDUCTIVE TRANSPARENT INTERMEDIATE LAYER AND A TRANSPARENT DIELECTRIC LAYER FACING THE FACEPLATE FOR RECEIVING SAID CHARGES, MEANS FOR PRODUCING REPEATED RELATIVE SWEEPING MOTION OF THE TUBE AND THE SCREEN, ONE WITH RESPECT TO THE OTHER, FOR PERIODICALLY SCANNING THE SCREEN TO APPLY A CHARGE PATTERN TO IT, WITH EACH SCREEN LOCATION RECEIVING A CHARGE IN ACCORDANCE WITH THE SIGNALS RECEIVED DURING EACH CYCLE OF THE SWEEPING MOTION, MEANS SUBJECT TO AN ANALOGOUS SWEEPING MOTION FOR APPLYING PARTICULATE MATERIAL TO EACH LOCATION OF THE SCREEN ONCE DURING EACH CYCLE AND FOLLOWING EXPOSURE OF THE LOCATION TO THE FACEPLATE FOR VISUALLY DISPLAYING, BY ADHESION OF SAID MATERIAL TO THE CHARGED SCREEN AREAS, AN IMAGE OF THE CHARGE PATTERN, AND MEANS, ALSO SUBJECT TO AN ANALOGOUS SWEEPING MOTION, FOR REMOVING THE IMAGE FORMED BY THE PARTICULATE MATERIAL FROM EACH LOCATION DURING EACH CYCLE IMMEDIATELY PRECEDING SUBSEQUENT EXPOSURE OF THE LOCATION TO THE FACEPLATE, WHEREBY SAID MATERIAL IS RETAINED TO REPRESENT A PATTERN IMAGE BY ADHERING TO EACH LOCATION ON THE SCREEN FOR THE DURATION OF SUBSTANTIALLY ONE COMPLETE CYCLE OF THE SWEEPING MOTION.