Optical recording medium

Details Optical recording medium Optical recording medium

1988-10-24

1990-09-11

Ryan, Patrick

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428207, 428412, 428545, 428913, 369288, 346 11, 346 76L, 3461351, 430945, 427 58, 427 69, 427162, 427166, B32B 300

Patent

active

049562169

ABSTRACT:
In an optical recording medium, for an audio-video or ROM compact disc comprising a pitted translucent base material and a layer (9) of a corrosion resistant metal or combination of metals from the groups 4N, 5N, 7N or 8N of the periodic table of elements is disclosed. For example NiCr can Be Applied onto the surface having the pits (7), thereby providing good adhesion, reflecting light and providing printable surface and not requiring any further coating such as a protective lacquer. Also, in the event that a gold-colored glossy layer is necessary, a CuBe layer can be sputtered onto the substrate (8).

REFERENCES:
patent: 4340959 (1982-07-01), Levin
patent: 4435801 (1984-03-01), Levin

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