Phase change optical recording medium and optical recording meth

Details Phase change optical recording medium and optical recording meth Phase change optical recording medium and optical recording meth

1997-07-25

1999-12-07

Krynski, William

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 641, 428 642, 428689, B32B 302

Patent

active

05997978&

ABSTRACT:
A phase change optical recording medium includes a phase change optical recording layer which transits between two states of the crystalline state and the amorphous state when irradiated with light, and a heat adjustment layer which is formed adjacent to the phase change optical recording layer and abruptly increases or decreases thermal conductivity with increasing temperature upon irradiation of recording light. This phase change optical recording medium can decrease the size of the recording mark and makes high-density recording possible.

REFERENCES:
patent: 5635267 (1997-06-01), Yamada et al.
patent: 5864357 (1999-01-01), Akutsu
Kasami Y et al: "Premastered Optical Disk by Superresolution Using Rear Aperture Detection", Jpn J. Appl. Phys. vol. 35 (1996) pp. 423-428.

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