Enclosed-type magnetic disc recording and/or reproducing apparat

Details Enclosed-type magnetic disc recording and/or reproducing apparat Enclosed-type magnetic disc recording and/or reproducing apparat

1979-05-29

1981-09-29

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360133, G11B 1700

Patent

active

042926564

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.

REFERENCES:
patent: 3710357 (1973-01-01), Buslik
patent: 3740735 (1973-06-01), Gabor
patent: 3843967 (1974-10-01), Mulvany
patent: 3849800 (1974-11-01), Cuzner et al.
patent: 3902195 (1975-08-01), Osako et al.
patent: 3938192 (1976-02-01), Caletti
patent: 4054931 (1977-10-01), Bolton et al.
patent: 4062049 (1977-12-01), Dirks

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