Thermo-optical method for writing information and an information

Details Thermo-optical method for writing information and an information Thermo-optical method for writing information and an information

1981-08-07

1983-08-09

Griffin, Donald A.

Recorders

Record receivers and/or driving means therefor

Laminated, impregnated, or coated bases

369100, G01D 1534, G11B 726

Patent

active

043982034

ABSTRACT:
Thermo-optical writing of information used for such applications as archival storage is performed on a medium in which a ductile metal film layer is stretched beyond the elastic limit under the pressure exerted by a contiguous layer of thermally deforming organic substance and is partially permeable to radiation produced by a light beam. An optical cavity formed between the ductile layer and a reflecting metal film layer is tuned so that the reflection factor of the information medium at the light-radiation wavelength increases with the deformation induced by the light beam.

REFERENCES:
patent: 3665483 (1972-05-01), Becker et al.
patent: 4285056 (1981-08-01), Bell
patent: 4300227 (1981-11-01), Bell
patent: 4329697 (1982-05-01), Bell
I.B.M. Technical Disclosure, vol. 16, No. 2, Jul. 1973, pp. 498 & 499.

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