Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1991-09-25
1994-09-13
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
053467400
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 a state of the recording layer is reversibly changed between optically recognizable states by irradiation of, for example, a laser beam and the recording layer has a thickness of from 1 nm to 10 nm, which recording medium has improved recording sensitivity.
REFERENCES:
patent: 4954379 (1990-09-01), Nishida et al.
patent: 5171618 (1992-12-01), Suzuki
patent: 5206114 (1993-04-01), Kobayashi
patent: 5234737 (1993-08-01), Ueno et al.
Ohta et al. SPIE vol. 1316, Optical Data Storage, p. 367 (1990).
Young et al., Journal of Applied Physics, vol. 60, p. 4319 (Dec. 1986).
Akahira Nobuo
Nagata Ken'ichi
Nishiuchi Ken'ichi
Ohno Eiji
Yamada Noboru
Macholl Marie R.
Matsushita Electric - Industrial Co., Ltd.
Ryan Patrick J.
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