Magnetic recording medium, process for producing magnetic recording medium, apparatus for producing magnetic recording medium, and magnetic recording apparatus
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United States of America Patent
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Mar 19, 1996
Issued Date -
N/A
app pub date -
Jan 21, 1994
filing date -
Sep 20, 1989
priority date (Note) -
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Abstract
The present invention provides a magnetic recording medium wherein the surface layer of the protective film of the medium is irradiated by ions to give a protective film having high reliability in resistance to sliding with the magnetic head, a process for producing the medium, an apparatus for producing the medium, and a magnetic recording apparatus having the medium mounted therein. The essentials of the present invention lie in introducing a minute surface roughness of atomic order in the surface of the protective film 5 constituting the outermost layer of a magnetic recording medium by irradiating atoms accelerated by high voltage (that is, by implanting ions) to the surface.
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