Optical recording medium

Details Optical recording medium Optical recording medium

1996-09-16

1998-05-19

Kiliman, Leszek

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 646, 428 649, 428336, 428694XS, 428694DE, 428694RL, 428610, 428900, 369 13, G11B 566

Patent

active

057533342

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.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.erasing operations are exceptionally improved.

REFERENCES:
patent: 3530441 (1970-09-01), Ovshiuky
patent: 4569881 (1986-02-01), Freese
patent: 4792474 (1988-12-01), Murakami
patent: 4847132 (1989-07-01), Tokao et al.

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