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US 4,072,985 AGranted
Video disc with a dielectric layer formed from styrene and nitrogen
AssigneeRCA Corporation
InventorsGrzegorz Kaganowicz, John W. Robinson
Life of this patent
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Abstract
This invention relates to a video disc with a thin polymeric dielectric layer formed from styrene and nitrogen. The dielectric layer has improved age deterioration resistance, wear characteristics and adhesion to a metal conductive layer.
Claims10
A capacitive recording means comprising a disc having a spiral groove on the face thereof with audio/video information in the form of geometric variations in said groove, a thin conductive layer thereon and a thin dielectric layer formed from styrene and nitrogen in a glow discharge on said conductive layer.
Dependencies are inferred from the claim text.