Enclosed-type magnetic disc recording and/or reproducing apparatus
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United States of America Patent
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Apr 26, 1983
Issued Date -
N/A
app pub date -
Jan 27, 1981
filing date -
Sep 24, 1976
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An enclosed-type magnetic disc recording and/or reproducing apparatus according to this invention, having a pressure chamber to enclose a bearing unit of a flange rotating along with a magnetic disc, introduces an air pressure at a high-pressure portion, created by an air flow produced by rotation of the magnetic disc and the flange, into the pressure chamber so as to raise the pressure within the pressure chamber to a level higher than 1 atm., thereby preventing the lubricant evaporated from the bearing member from sticking to the magnetic disc or head to lower the faculty thereof.
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