Optical recording medium

Details Optical recording medium Optical recording medium

1997-12-18

1999-10-12

Krynski, William

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 641, 428 642, 428 646, 4302731, 4302711, 369284, 369116, B32B 302

Patent

active

059652292

ABSTRACT:
An optical recording medium has a phase-change recording layer embedded in a stack of thin layers arranged on a substrate. At least one of the dielectric layers adjacent to the recording layer comprises a carbide. The carbide layer is separated from the substrate and/or from a reflecting layer in the stack by a dielectric layer not containing a carbide. The thickness of the carbide layer either lies in a range from 2 to 8 nm or is substantially equal to the thickness of the adjacent dielectric layer.

REFERENCES:
patent: 3876842 (1975-04-01), Bouwhuis
patent: 4658388 (1987-04-01), Ishiwatari et al.
patent: 5234737 (1993-08-01), Ueno et al.
patent: 5498507 (1996-03-01), Handa et al.
patent: 5818808 (1998-10-01), Takada et al.

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