Recording medium and method of making the same

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Mechanical modification or sensing of storage medium

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369276, 369288, G11B 300, G11B 726

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active

046637532

ABSTRACT:
A method is disclosed for recording information wherein an information-containing surface relief image is mechanically micromachined into a recording medium formed of a copper/oxygen amalgam containing 8 to 11 atomic weight percentage of oxygen and having a grain size of 500 Angstroms or less and wherein the amalgam has a hardness of 250 to 320 on the Knoop hardness scale.

REFERENCES:
patent: 3982066 (1976-03-01), Nyman et al.
patent: 4004080 (1977-01-01), Vossen, Jr. et al.
patent: 4044379 (1977-08-01), Halter
patent: 4072985 (1978-02-01), Kaganowicz et al.
patent: 4077051 (1978-02-01), Vossen, Jr.
Vossen et al., "Thin Film Processes", (1978) pp. 48-73.
N. Schwartz, "Reactive Sputtering", Bell Telephone Labs, Inc., pp. 325-334.
A. J. Purdes et al., "Copper/Oxygen Glow Discharge Spectrometry", J.Vac.Sci.Technol., vol. 14, No. 1, Jan./Feb. 1977, pp. 98-101.

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