Rca Inc.

George Frederick Nichols

Frederick Russell Nyman

John Louis Vossen, Jr

Dennis Glendon Fisher

John L Vossen

The addition of copper, either as a thin film or as an alloy constituent, to nickel-chromium alloys improves the adhesion of such alloys to polymeric substrates and coatings.

Adherence of metal films to polymeric materials

An improved metal coating for a video disc of a grooved polymer disc, a conductive metal coating thereon and a dielectric coating on said metal coating, wherein said metal coating comprises a film of a pseudoalloy composition of an alloy of nickel and chromium and, optionally, iron, containing from about 10 to about 25 atomic percent of oxygen admixed with from about 10 to 15 atomic percent of copper.

Metal coating for video discs

An improved metal coating for a video disc of a grooved polymer disc, a conductive metal coating thereon and a dielectric coating on said metal coating comprising a trilayer film of a first layer of copper about 25-50 angstroms thick, a second layer about 200 angstroms thick of an alloy of nickel, and chromium and, optionally, iron, containing from about 20 to about 30 atomic percent of oxygen, and a third layer, of copper, about 25-50 angstroms thick.

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Oaklandon, IN, United States of America

George Frederick Nichols