Reversible optical recording medium with an optothermally deform

Details Reversible optical recording medium with an optothermally deform Reversible optical recording medium with an optothermally deform

1987-12-23

1989-08-08

Faber, Alan

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369100, 369284, 369286, 369288, 430945, 430270, 346766, 3461351, G11B 724, G11B 726

Patent

active

048559920

ABSTRACT:
There is disclosed a bubble-mode data-rewritable optical disc, which has a transparent substrate and a recording layer, formed on the substrate, for storing data to be optically rewritable. The substrate is at least partially formed of an organic material, which releases a gas component when it is heated at a radiation region of a data recording light beam. The recording layer is deposited on the substrate by co-sputtering or co-vacuum evaporation. The recording layer is made of a specific amorphous material containing silicon and fine metal particles. When the gas component is released from the substrate, the recording layer is deformed to be locally peeled off out of the substrate by pressure of the gas component, thus forming a protuberance. In a data erasing mode, a data erasing light beam is radiated onto the recording layer, which is then deformed so as to cause the protuberance to disappear, and has a substantially flat surface, thereby erasing the stored information.

REFERENCES:
patent: 4300227 (1981-11-01), Bell
patent: 4360895 (1982-11-01), Cornet
patent: 4371954 (1983-02-01), Cornet
patent: 4404656 (1983-09-01), Cornet
patent: 4408213 (1983-10-01), Bell
patent: 4473633 (1984-09-01), Wada et al.
patent: 4682321 (1987-07-01), Takaoka et al.
patent: 4702991 (1987-10-01), Takeoka et al.
patent: 4719615 (1988-01-01), Feyner et al.

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