Radiation imagery chemistry: process – composition – or product th – Producing cathode-ray tube or element thereof
Patent
1989-01-23
1990-04-17
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Producing cathode-ray tube or element thereof
430 28, 430 29, 427 68, 427335, G03C 500, B05D 310, B05D 506
Patent
active
049179780
ABSTRACT:
The method of electrophotographically manufacturing a luminescent screen assembly on a substrate of a CRT, according to the present invention, includes the steps of coating the substrate with a conductive layer and overcoating the conductive layer with a photoconductive layer, establishing an electrostatic charge on the photoconductive layer, and exposing selected areas of the photoconductive layer to visible light to affect the charge thereon. Then, the selected areas of the photoconductive layer are developed with triboelectrically charged, dry-powdered, surface-treated screen structure materials. The improved process increases the adherence of the surface-treated materials to the photoconductive layer by contacting the surface-treated materials with a solvent to render the photoconductive layer and the materials tacky. The dried screen is fixed with a plurality of coatings of an aqueous alcohol mixture of dichromated polyvinyl alcohol or potassium silicate and then filmed, aluminized and baked to form the screen assembly.
REFERENCES:
patent: 2538562 (1951-01-01), Gustin et al.
patent: 2625734 (1953-01-01), Law
patent: 2682478 (1954-06-01), House
patent: 2776907 (1957-01-01), Carlson
patent: 2965482 (1960-12-01), Dessauer et al.
patent: 2995464 (1961-08-01), Gundlach
patent: 3475169 (1969-10-01), Lange
patent: 3489556 (1970-01-01), Drozd
patent: 3489557 (1970-01-01), Lange et al.
patent: 4263386 (1981-04-01), Datta
patent: 4448866 (1984-05-01), Olieslagers et al.
patent: 4612268 (1986-09-01), Miura et al.
patent: 4620133 (1986-10-01), Morrell et al.
patent: 4651053 (1987-03-01), Kato et al.
patent: 4657961 (1987-04-01), Nishizawa et al.
Ritt Peter M.
Stork Harry R.
Coughlin, Jr. V. J.
Irlbeck D. H.
Lindeman Jeffrey A.
Michl Paul R.
Thomson Consumer Electronics Inc.
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