Magnetic recording medium and method for making it
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United States of America Patent
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Jan 26, 1993
Grant Date -
N/A
app pub date -
Dec 3, 1990
filing date -
Dec 11, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In making a magnetic recording medium, a diamond-like carbon film is formed stably with high product efficiency such as 200 .ANG./sec, without occurrence of irregular discharge, and improved still durability and reduced head contamination are achieved by utilizing a.c. plasma discharge or a.c. plasma discharge superimposed by d.c. power and the lubricant film.
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