Magnetic disk with textured area on part of disk
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United States of America Patent
Stats
-
Feb 26, 1991
Grant Date -
N/A
app pub date -
Dec 18, 1989
filing date -
Mar 16, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic disk in which a texture is formed in a first region spaced apart from an opening formed in a glass substrate by a predetermined distance, and a lubricant is coated on only the texture. The texture is not formed in a second region serving as a data surface, and an undercoating film, a magnetic recording film, and a protective film are sequentially coated on the surface of the glass substrate. In this magnetic disk, a floating amount of a magnetic head can be set to be small, and high-density data can be recorded. The data surface can be free from contamination by dust.
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Cited Art Landscape
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