Diamond-like carbon over-coats for optical recording media devic

Details Diamond-like carbon over-coats for optical recording media devic Diamond-like carbon over-coats for optical recording media devic

1997-07-02

2000-07-11

Dixon, Merrick

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Light polarizing article or holographic article

264454, 264456, 264461, 264471, 428 644, 428 646, 428457, 428913, 4302711, B29D 1700

Patent

active

060867965

ABSTRACT:
A method is provided for manufacturing a diamond-like carbon (DLC) coated optical phase-change recording medium for use with near-field optical head devices and which exhibits superior wear resistance and improved lifetime. According to the method, the surface of a composite optical phase-change media structure deposited onto a substrate is subjected to ion beam deposition of a DLC over-coat to a thickness of no greater than about 450 .ANG.. Preferably the DLC is ion beam deposited onto the phase-change recording layer at the surface of the medium structure or onto a germanium-containing adhesion-promoting interlayer to achieve the desired adhesion of the DLC to the surface of the medium structure.

REFERENCES:
patent: 5424106 (1995-06-01), Yamada
patent: 5453346 (1995-09-01), Kawahara et al.
patent: 5545454 (1996-08-01), Yamada et al.

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