H - Electricity – 01 – J
Patent
H - Electricity
01
J
316/13
H01J 9/20 (2006.01) G03G 13/01 (2006.01) G03G 13/20 (2006.01) G03G 13/22 (2006.01) H01J 9/22 (2006.01) H01J 9/227 (2006.01)
Patent
CA 2008073
A method of electrophotographically manufacturing a luminescent screen assembly on a substrate of a CRT 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 pith triboelectrically charged, dry-powdered, surface-treated screen structure materials. The improved method increases the adherence of the surface-treated materials to the photoconductive layer by contacting the surface-treated materials pith 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, aluminised and baked to form the screen assembly.
Ritt Peter Michael
Stork Harry Robert
Craig Wilson And Company
Thomson Consumer Electronics Inc.
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