Optical recording medium and optical recording method using the

Details Optical recording medium and optical recording method using the Optical recording medium and optical recording method using the

1992-09-28

1996-05-07

Kiliman, Leszek

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 644, 428684ML, 428684XS, 428900, 427162, 368284, 368288, 430321, 430346, 4304951, 430496, 346137, 3461351, B32B 302, G11B 566, B05D 506, G03C 500

Patent

active

055144403

ABSTRACT:
An optical recording medium is disclosed, which comprises a substrate having thereon a recording layer which is capable of forming regions having an increased reflectivity by spinodal decomposition of the recording layer upon application thereto of energy of a threshold value or higher. Writing of information is achieved by irradiating the recording layer with no phase separation caused by spinodal decomposition with an energy beam having an intensity causing spinodal decomposition-induced phase separation in accordance with the information to be written. Reading of the information, on the other hand, is achieved by irradiating the recording layer with phase separation caused by spinodal decomposition with an energy beam having an intensity causing no spinodal decomposition-induced phase separation. The medium and the recording system using the same exhibit high sensitivity, high reflectivity, and high contract and conform to the CD or LD standard.

REFERENCES:
patent: 4388400 (1983-06-01), Tabei et al.
patent: 4821050 (1989-04-01), Yabe et al.

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