Radiation imagery chemistry: process – composition – or product th – Producing cathode-ray tube or element thereof – With faceplate of phosphoric stripes
Patent
1990-08-13
1992-07-21
Le, Hoa Van
Radiation imagery chemistry: process, composition, or product th
Producing cathode-ray tube or element thereof
With faceplate of phosphoric stripes
430 23, 430 25, 430902, 250325, 361229, G03C 500
Patent
active
051321882
ABSTRACT:
A method of electrophotographically manufacturing a luminescent screen on an interior concave surface of a CRT faceplate panel having a major axis with a first center of curvature and a minor axis with a second center of curvature, the method including the steps of utilizing a charging apparatus for uniformly charging a photoconductive layer disposed on the concave surface of the faceplate panel by providing a corona voltage from a corona generator to at least one corona charger which has an arcuately-shaped charging electrode, the corona charger has a center of curvature substantially concentric with a center of curvature of the concave surface of the panel, a support arm attached to the corona charger is pivotably located at the other center of curvature, the corona charger substantially conforms to, and is spaced from the photoconductive layer on the concave surface, and moving the corona charger across the concave surface.
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Datta Pabitra
Friel Ronald N.
Riddle George H.
Simms Robert E.
Steinmetz Carl C.
Coughlin Jr. Vincent J.
Irlbeck Dennis H.
Le Hoa Van
RCA Thomson Licensing Corp.
Tripoli Joseph S.
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