Floating type magnetic head having flush rear reference surface

Details Floating type magnetic head having flush rear reference surface Floating type magnetic head having flush rear reference surface

1991-07-22

1997-05-06

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 560

Patent

active

056277008

ABSTRACT:
A floating type composite magnetic head includes a slider, having an air bearing surface, made of a non-magnetic substance, a magnetic head core which is formed of a pair of magnetic cores defining a magnetic gap, or a pair of magnetic cores having a magnetic gap defined by a butting surface on which is formed a magnetic metallic thin film, and is fixed by bonding glass in a groove provided in a flow-out end of the air bearing of the slider, excitation coils wound in a window section of the head core, and a front gap surface of the magnetic head core being placed so as to oppose the magnetic recording medium. The magnetic head core back surface and the slider rear surface are formed as to be flush at least in the vicinity of the groove, and preferably have a maximum surface roughness of 3 to 8 .mu.m.

REFERENCES:
patent: 4870521 (1989-09-01), Okabayashi
patent: 4999726 (1991-03-01), Goto et al.
patent: 5008767 (1991-04-01), Iwata et al.
patent: 5010431 (1991-04-01), Shinohara et al.
patent: 5080948 (1992-01-01), Morita et al.
patent: 5177653 (1993-01-01), Shimada
Patent Abstracts of Japan, vol. 12, No. 220 (p-720) Jun. 23, 1922 and JP-A-63 016 412 (Seiko Epson Corp.) Jan. 23, 1988.
European Search Report.

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