Magnetic head having electromechanical transducer disposed at on

Details Magnetic head having electromechanical transducer disposed at on Magnetic head having electromechanical transducer disposed at on

1982-07-22

1987-06-09

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Head

Core

360110, 360123, G11B 5147

Patent

active

046724966

ABSTRACT:
A thin magnetic film is deposited over a nonmagnetic or piezoelectric substrate. When a shock wave is propagated through this substrate from its one end to the other end, the permeability of the thin magnetic film is locally increased and a portion or region having a high permeability also travels from one end to the other end of the thin magnetic film in unison with the shock wave. A magnetic core with a signal winding is disposed and magnetically coupled with the thin magnetic film. The signal can be recorded or reproduced while the recording medium is scanned.

REFERENCES:
patent: 3391254 (1968-07-01), Honig
patent: 4097802 (1978-06-01), Mahopac
patent: 4286299 (1981-08-01), Shirahata et al.
patent: 4371905 (1983-02-01), Valstyn et al.
patent: 4438470 (1984-03-01), Sawada et al.
IBM Tech. Disc. Bull., J. Flora et al, "Multitrack Probe Type Recording Transducer", vol. 3, No. 11, Apr. 1961, p. 18.

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