Magnetic disc member and process for manufacturing the same
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United States of America Patent
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-
Feb 25, 1992
Grant Date -
N/A
app pub date -
Aug 23, 1989
filing date -
Aug 24, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved magnetic disc member for use in a magnetic disc device, said member comprising a base plate, a number of fine noble metal particles adhered to a surface thereof to form microprotuberances and a nonmagnetic layer coated further thereon; the surface roughness of the member being controlled by changing a thickness of the nonmagnetic layer.
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