Magnetic head having fluid pressure means

Details Magnetic head having fluid pressure means Magnetic head having fluid pressure means

1986-06-09

1988-05-24

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Head accessory

360102, 360129, G11B 1560, G11B 510, G11B 1732

Patent

active

047470062

ABSTRACT:
A magnetic head comprises a magnetic pole placed at a position to effect a magnetic function to a magnetic recording medium to be driven; a medium supporter which is placed opposing the magnetic pole with respect to the magnetic recording medium with a certain gap between the medium supporter and the magnetic recording medium, and which has a cavity at the portion opposing said magnetic pole and a flat portion having a spread surface area formed around the cavity opposing the magnetic pole; and a fluid supplied to the cavity so that the magnetic recording medium is brought to contact with the magnetic pole by a force of the pressurized fluid from the cavity and is supported by a negative pressure produced at the flat portion.

REFERENCES:
patent: 3418434 (1968-12-01), Groenewegen
patent: 3818506 (1974-06-01), Kelch et al.
patent: 3886594 (1975-05-01), Toussan
patent: 4071854 (1978-01-01), Bijon et al.
patent: 4151573 (1979-04-01), Tandon et al.
Fulton, "Pneumatic Brake/Pressure Pad for Tape Transport", RCA Technical Notes, No. 498, Sep. 1961.

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