Magnetic disk medium with designed textured surfaces and controlled surface roughness and method of producing same
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United States of America Patent
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Nov 19, 1996
Issued Date -
N/A
app pub date -
Dec 21, 1993
filing date -
Dec 17, 1991
priority date (Note) -
Expired
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Abstract
In a magnetic disk medium, a substrate is etched to have a designed, controlled topography. A magnetic recording medium and a protective layer are provided over the substrate. A method for controlling production of the surface characteristics of the magnetic disk medium is controlled to optimize surface characteristics for use of the magnetic disk medium in a magnetic disk apparatus that reads information stored on the magnetic disk medium.
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