Optical recording medium
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United States of America Patent
Stats
-
Sep 11, 1990
Grant Date -
N/A
app pub date -
Oct 24, 1988
filing date -
Jun 3, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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).
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