Composite type magnetic head for recording and reproducing high

Details Composite type magnetic head for recording and reproducing high Composite type magnetic head for recording and reproducing high

1984-05-09

1987-04-07

Topper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

360122, 360123, G11B 5147, G11B 5187, G11B 517

Patent

active

046565477

ABSTRACT:
There is provided a structure of a composite type magnetic head and its manufacturing method. The composite type magnetic head comprises: two high permeability ferrite blocks with projections having nearly edged sections formed thereon; magnetic films having a high saturation flux density deposited on the side faces of the projections, the magnetic films confronting each other via a functional gap near front ends of said projections; guard films deposited over the magnetic films comprising a non-magnetic material; and non-magnetic materials filled on the guard films up to side face of the coil. This magnetic head exhibits excellent recording and reproducing characteristics. The contour effect is negligibly small. The reaction between the magnetic film and the non-magnetic material is prevented by the guard film.

REFERENCES:
patent: 3795954 (1974-05-01), Alex et al.
patent: 3813693 (1974-05-01), Gooch et al.
patent: 4559572 (1985-12-01), Kumasaka et al.

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