摘要:
An electron beam tube for use in formation and recordation of electrostatic charge patterns has a face plate including a photoconductive layer and a conductive base which is transmissive to electron beams and is disposed intermediate the photoconductive layer and the tube electron beam emitter. Processes for forming electrostatic charge patterns in such face plate include the steps of placing an insulative charge-retaining layer in contact with the photoconductive layer, the insulative layer either being previously charged or being charged while in position on the photoconductive layer, and applying a voltage to the face plate and simultaneously irradiating the photoconductive layer with pattern-indicating electron beams. Electrostatic charge patterns thus-formed in the insulative layer may be developed in place or transferred and subsequently developed.
摘要:
A display device in which a cathode ray tube envelope is utilized with a plurality of conductive elements extending from the interior surface of the faceplate of the cathode ray to the exterior surface of the cathode ray tube. A high resolution faceplate is provided by fabricating the faceplate in a manner such that the conductive elements are formed on a surface transverse to the inner and outer surfaces of the faceplate and this transverse surface is then formed into the faceplate to provide a vacuum type window.
摘要:
AN ELCTRONIC PRINTING DEVICE IN WHICH A CATHODE RAY TUBE IS UTILIZED AS AN ELECTRON SOURCE FOR ELECTRIFYING THE PRINTING INK BUT THE MODULATION OF INK DEPOSITION BY THE INFORMATION SIGNAL IS PERFORMED OUTSIDE OF THE CATHODE RAY TUBE AND AT A LOW POTENTIAL LEVEL AND THE PRINTING IS DONE DIRECTLY ON A SHEET OF ORDINARY PAPER.