Optical recording medium and reproducing method therefor

Details Optical recording medium and reproducing method therefor Optical recording medium and reproducing method therefor

1995-03-21

1997-02-18

Ryan, Patrick

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428 642, 428 644, 428 648, 428913, 4302701, 43027011, 43027012, 430523, 430945, 369283, 369288, B32B 300

Patent

active

056040024

ABSTRACT:
An optical recording medium includes a recording layer, and a masking layer which is converted to a state having small absorption at the wavelength of a reproducing beam due to progress of decoloration caused by a thermal reaction upon irradiation with the reproducing beam, or due to facilitation of decoloration caused by a photon mode photochromic reaction through temperature rise upon irradiation with the reproducing beam.

REFERENCES:
patent: 5164287 (1992-11-01), Nagae et al.
patent: 5175079 (1992-12-01), Van
patent: 5215868 (1993-06-01), Taniguchi
patent: 5234799 (1993-08-01), Nagae et al.
patent: 5246758 (1993-09-01), Matsui
patent: 5438561 (1995-08-01), Van
patent: 5443940 (1995-08-01), Tatezono
"Thermally Irreversible Photochromic Systems. Reversible Photocyclization of 1,2-Bis (benzo[b]thiophen-3-yl) ethene Derivatives," Bull. Chem. Soc. Jpn., vol. 63, pp. 1311-1315 (1990).
"Optical Recording Characteristics of Photochromic Media," Symposium on Optical Memory 1994.

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