Video disc processing

Details Video disc processing Video disc processing

1980-01-04

1981-06-23

Smith, Ronald H.

Dynamic information storage or retrieval

Storage medium structure

Layered

134 42, 264107, 264233, 264344, 427299, 427387, 427 64, 428 65, 428447, 369126, 369276, B32B 302

Patent

active

042751004

ABSTRACT:
A conductive video disc replica is cleaned by washing with an aqueous solution comprising an oxidizing agent, a base and a surfactant of a fluorocarbon added in an amount so that the solution has a surface energy of about 35 dynes/cm.sup.2 or less. This solution removes metallic and oxygen-containing impurities from the surface of the disc and leaves a fluorinated surface.

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patent: 3635667 (1972-01-01), Keay et al.
patent: 3833408 (1974-09-01), Matthies
patent: 3838967 (1974-10-01), Shepley
patent: 3842194 (1974-10-01), Clemens
patent: 4086178 (1978-04-01), Walker
patent: 4127872 (1978-11-01), Shenlo
patent: 4131698 (1978-12-01), Deckert

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