Skew insensitive magnetic read head

Details Skew insensitive magnetic read head Skew insensitive magnetic read head

1982-12-30

1986-01-21

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360122, 338 32R, 324252, G11B 5127, G11B 533, G11B 5187

Patent

active

045660506

ABSTRACT:
In hand-held magnetic readers, it is desirable that the magnetic read head be able to detect flux transitions on the surface of a magnetic media without requiring that the head have a specific orientation to the media. The present invention provides such a read head in which a thin planar magnetoresistive element is mounted so as to be perpendicular to the surface of the media. A thick yoke which is coplanar with the element provides a pole face adjacent the media surface which is sufficently wide as to extend over adjacent flux transitions when the plane of the element is skewed with respect to the flux transitions. A further pole face of the yoke is adjacent the edge of the element remote from the surface.

REFERENCES:
patent: 3848217 (1974-11-01), Lazzari
patent: 3881190 (1975-04-01), Brock et al.
patent: 3921217 (1975-11-01), Thompson
patent: 3921218 (1975-11-01), Kayser
patent: 4100583 (1978-07-01), Koel et al.
patent: 4296377 (1981-10-01), Ohkubo
patent: 4477794 (1984-10-01), Nomura et al.
IBM Journal of Research and Development, vol. 18, No. 6, pp. 541-546, Nov. 1974, "Hand-Held Magnetoresistive Transducer", by Bajorek et al.

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