Optical recording medium and optical disk apparatus

Details Optical recording medium and optical disk apparatus Optical recording medium and optical disk apparatus

1998-04-20

1999-10-26

Evans, Elizabeth

Stock material or miscellaneous articles

Circular sheet or circular blank

428 644, 428 645, 428 646, 428913, 43027013, 4304951, 430945, 3692751, 369283, 369288, B32B 300

Patent

active

059724595

ABSTRACT:
An optical recording medium is provided which achieves a higher recording capacity. This optical recording medium includes a base formed of thermoplastic resin which has a thickness ranging from between approximately 0.3 to 1.2 nm, a guide groove formed on the base, at least a reflective film and a phase-change recording layer successively formed on the guide groove, arid a light transmissive layer having a thickness ranging from between approximately 3 to 177 .mu.m. In this optical recording medium, the unevenness .DELTA.t of the thickness of the light transmission layer is set within the range of:

REFERENCES:
patent: 5506022 (1996-04-01), Ide
patent: 5652036 (1997-07-01), Kobayashi

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