Magnetic recording medium incorporating metallic magnetic thin film
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United States of America Patent
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-
May 5, 1992
Grant Date -
N/A
app pub date -
Jul 9, 1990
filing date -
Jul 7, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic metallic thin film type of recording medium has particles of predetermined size uniformly distributed over a surface of a base layer, with a magnetic metallic thin film formed over these. A diamond-state carbon protective film, a carbon protective layer, e.g. of graphite, and a layer of lubricative material are successively formed over the metallic thin film, to provide lubrication and protection. As a result of surface contour modification resulting from the protrusions formed by the particles on the base layer, the contact area between the head and the recording medium is reduced, and this together with the multiple protective layers provides greatly increased durability by comparison with prior art configurations.
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