Optical recording medium and optical recording/reproducing appar

Details Optical recording medium and optical recording/reproducing appar Optical recording medium and optical recording/reproducing appar

1995-04-11

1995-12-12

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428913, 428 651, 369100, 369121, 430270, 430945, B32B 300

Patent

active

054748267

ABSTRACT:
An optical recording medium comprises a transparent substrate, an inner protection layer, a recording material layer, an outer protection layer, and a reflection layer, which are laminated in this order. In an in-groove recording mode, the ratio of the thickness of the recording material layer to the thickness of the outer protection layer is in a range between 0.52 and 0.95. In an on-land recording mode, the ratio of the thickness of the recording material layer to the thickness of the outer protection layer is in a range between 0.32 and 0.6.

REFERENCES:
patent: 5130971 (1992-07-01), Ohno
patent: 5233599 (1993-08-01), Ohno
patent: 5255260 (1993-10-01), Yamada
patent: 5289453 (1994-02-01), Ohno
patent: 5348783 (1994-09-01), Ohno
patent: 5396480 (1995-03-01), Morishita

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