Magnetic recording medium, method of producing the same, and recording and reading-out method
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United States of America Patent
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Jul 27, 1999
Issued Date -
N/A
app pub date -
Sep 24, 1997
filing date -
Jul 4, 1994
priority date (Note) -
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Abstract
The disclosure describes a magnetic recording medium having at least a magnetic layer, optionally by means of an under layer, on a non-magnetic substrate, wherein projections formed by irradiation of an energy beam and each having a height from 1 to 60 nm are provided at the number of 10.sup.2 to 10.sup.8 per 1 mm.sup.2 on the surface of any one of the non-magnetic substrate, the under layer, the magnetic layer and the magnetic recording medium.
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