Method for increasing track density of magneto-optical storage media
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United States of America Patent
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Mar 2, 1993
Grant Date -
N/A
app pub date -
Jun 29, 1989
filing date -
Jun 29, 1989
priority date (Note) -
Expired
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Abstract
An optical data storage medium has, on one face, a recording track and a non-recording track for high-density magneto-optical recording. The media is manufactured by sputtering magnetic material onto a surface with alternating tracks of rough and smooth textures. Alternatively, the media may be manufactured by depositing a coating of hydrogenated carbon composition and exposing the coating to ion bombardment, or by sputtering or angular deposition of magnetic material onto a corrugated surface.
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