Optical information recording medium

Details Optical information recording medium Optical information recording medium

1993-05-26

1994-09-20

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 4284111, 428688, 428913, 430945, 346 76L, 3461351, 3692752, 369286, B32B 302

Patent

active

053487834

ABSTRACT:
An optical information recording medium comprising a substrate, and a dielectric layer, a recording layer, a dielectric layer and a reflective layer which are laminated on the substrate in this order or a reflective layer, a dielectric layer, a recording layer and a dielectric layer which are laminated on the substrate in this order, wherein the recording layer comprises alternately laminated at least two optically active layers and at least one amorphous-acceleration layer; each of the optically active layers having a thickness of from 1 nm to 10 nm; the thickness d.sub.1 of each of the optically active layers and the thickness d.sub.2 of the amorphous-acceleration layer satisfying the equation: 1/3.ltoreq.d.sub.1 /d.sub.2 .ltoreq.3.

REFERENCES:
patent: 4954379 (1990-09-01), Nishida et al.
patent: 5109375 (1992-04-01), Greidanus et al.
patent: 5171618 (1992-12-01), Suzuki
patent: 5187703 (1993-02-01), Katayama et al.
patent: 5192644 (1993-03-01), Ohta et al.
patent: 5194363 (1993-03-01), Yoshioka et al.
patent: 5206114 (1993-04-01), Kobayashi
patent: 5234737 (1993-08-01), Ueno et al.
Young et al., J. Appl. Phys. 60 (12) Dec. 15, 1986 pp. 4319-4322.
Ohta et al., SPIE vol. 1316 Optical Data Storage (1990) pp. 367-373.

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