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US 4,735,888 AGranted
Information recording medium and manufacturing method thereof
AssigneeKabushiki Kaisha Toshiba
InventorsYoshikatsu Takeoka, Norio Ozawa, Nobuaki Yasuda
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Abstract
A disk-shaped recording medium of the invention has a photosensitive recording layer formed on a substrate. Tellurium oxide clusters are dispersed in a hydrocarbon matrix of the recording layer so as to thermally stabilize the matrix. Tellurium clusters are dispersed in the matrix which is thermally stabilized by dispersion of the tellurium oxide clusters. The recording layer has excellent oxidation and heat resistance. The recording medium is manufactured by a plasma sputtering technique.
Claims14
A recording medium, comprising:
- (a) a substrate;
- and
- (b) a photosensitive recording layer formed on said substrate, said recording layer comprising,
- a hydrocarbon matrix,
- low-melting-point metal clusters dispersed in said matrix, the low-melting-point metal of said clusters selected from the group consisting of tellurium, indium, bismuth, lead, arsenic, and selenium, and
- metal oxide clusters dispersed in said matrix for thermally stabilizing said matrix and for improving the heat resistance of said recording layer, the metal of said oxide clusters selected from the group consisting of tellurium, indium, bismuth, lead, arsenic, and selenium.
3 more elements
A recording medium comprising:
- (a) a substrate;
- and
- (b) a photosensitive recording layer formed on said substrate, said recording layer comprising;
- a hydrocarbon matrix,
- tellurium metal clusters dispersed in said matrix, and
- metal oxide clusters dispersed in said matrix for thermally stabilizing said matrix and for improving the heat resistance of said recording layer, the metal of said oxide clusters being selected from the group consisting of tellurium, indium, bismuth, lead, arsenic, and selenium.
3 more elements
Dependencies are inferred from the claim text.