Magnetic recording medium and method of producing the same
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United States of America Patent
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Issued Date -
Oct 30, 2003
app pub date -
Apr 25, 2003
filing date -
Apr 25, 2002
priority date (Note) -
Abandoned
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Abstract
In a magnetic recording medium (10) including a glass substrate (1) which has a principal surface and which includes a compressive stress layer (1aa) as a surface layer having the principal surface, and a magnetic layer (4) formed on the principal surface of the glass substrate, compressive stress produced on the principal surface of the glass substrate is equal to 3 kg/mm.sup.2 or more. The glass substrate has the principal surface provided with a texture (100) for inducing magnetic anisotropy in the magnetic layer. A distance from the principal surface of the glass substrate to the magnetic layer is equal to 1200 angstroms or less.
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