Recorders – Record receivers and/or driving means therefor – Laminated – impregnated – or coated bases
Patent
1981-06-12
1984-01-10
Hartary, Joseph W.
Recorders
Record receivers and/or driving means therefor
Laminated, impregnated, or coated bases
346 76L, 365127, 430 19, 430945, G01D 1534
Patent
active
044255705
ABSTRACT:
The invention is a recording medium wherein the light absorptive layer is a granular material comprising domains of a light sensitive material embedded in a dielectric matrix. The domains comprise a material which can be reversibly switched from a first state to a second state having different optical properties by the absorption of light. The matrix is composed of a material which is effective for inhibiting the formation of an irreversible change in the optical properties of the absorptive layer. The invention further comprises this optical recording medium having an information track recorded therein as a series of regions in the absorptive layer wherein the domains have been reversibly switched to a second state having different optical properties.
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R. W. Cohen et al., Optical Properties of Granular Silver & Gold Films, Oct. 15, 1973, Physical Review B, vol. 8, No. 8, p. 3689-3701.
Bartolini et al., Review and Analysis of Optical Recording Media; Optical Engineering; vol. 15, No. 2, Mar./Apr., 1976, pp. 99-108.
Bartolini et al., Optical Disk Systems Emerge; IEEE Spectrum; Aug., 1978, pp. 20-28.
Arie Yehuda
Bell Alan E.
Burke William J.
Hartary Joseph W.
Morris Birgit E.
RCA Corporation
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