Optical recording medium

Details Optical recording medium Optical recording medium

1994-10-26

1996-12-24

Kiliman, Leszek

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 646, 428 649, 428336, 428694DE, 428684XS, 428694RL, 428900, 369 13, B32B 302, G11B 566

Patent

active

055872166

ABSTRACT:
An optical recording medium capable of recording, reproducing and erasing information wherein a pulsating phenomenon where dielectric layer provided on the top and bottom of the recording thing film layer are thermally expanded, and contracted through the recording and erasing so that an inferior phenomenon of moving the recording thin film layer along the guiding groove in the disc rotating direction is considerably restrained, whereby, uneven thickness in the recording thin film layer is removed, thus making it possible to prevent the signal quality from being deteriorated, and the repeating characteristics of the recording and erasing operations are exceptionally improved.

REFERENCES:
patent: 3530441 (1969-01-01), Ovshinsky
patent: 4569881 (1986-02-01), Freese et al.
patent: 4792474 (1988-12-01), Murakami et al.
patent: 4847132 (1989-07-01), Takao et al.

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