Magnetic head for perpendicular magnetic recording and reproduct

Details Magnetic head for perpendicular magnetic recording and reproduct Magnetic head for perpendicular magnetic recording and reproduct

1987-08-26

1988-05-17

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Coil

360119, 360122, 360126, G11B 5147, G11B 5187, G11B 523

Patent

active

047455063

ABSTRACT:
A perpendicular magnetic head of high recording and reproducing efficiency which integrally incorporates a step-up transformer. A main pole for picking up a reproduce magnetic flux from a recording medium and applying recording magnetic field thereto is formed of a magnetic thin film. A signal winding formed of a thin film is disposed in the immediate vicinity of the forward end of the main pole so as to have a high conversion sensitivity per turn with respect to the reproduce magnetic flux from the recording medium. The signal winding which itself constitutes a closed circuit interlinks a magnetic path of the step-up transformer, thereby forming a primary winding of the transformer. A secondary winding from which head output is taken out is wound in the magnetic path of the transformer.

REFERENCES:
patent: 3987487 (1976-10-01), Berger
patent: 4402027 (1983-08-01), Nakamura et al.
patent: 4423450 (1983-12-01), Hamilton
patent: 4546398 (1985-10-01), Toda et al.
patent: 4575777 (1986-03-01), Hosokawa
Iwasaki et al., "The . . . Head", IEEE Transactions on Magnetics, vol. Mag-14, No. 5, Sep. 1978.
Toda et al., "A . . . Recording", IEEE Transactions on Magnetics, vol. Mag-18, No. 6, Nov. 1982.

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