Thin film magnetic recording head with very narrow track width p

Details Thin film magnetic recording head with very narrow track width p Thin film magnetic recording head with very narrow track width p

1998-03-27

2000-07-18

Davis, David

Dynamic magnetic information storage or retrieval

Head

Core

360119, G11B 5147, G11B 523

Patent

active

06091582&

ABSTRACT:
A thin film magnetic head is providing for recording with less blur having a high recording magnetic field, for use in a recording/reproduction separation type magnetic head and a magnetic recording/reproducing apparatus. The thin film magnetic head, in which a gap film of a recording head and a magnetic film in contact with the gap film have the same track width, includes an upper magnetic film of the recording head and an upper shield film of a magnetic resistive film, each having a width wider than the track width, and a cross section parallel to the air bearing surface of the upper magnetic film is reduced at a position less than a gap depth from the air bearing surface. The thin film magnetic head has a coil conductor sandwiched by a first magnetic film and a fourth magnetic film, a second magnetic body magnetically connected to the first magnetic film, a third magnetic body magnetically connected to the fourth magnetic film, and a magnetic gap sandwiched by the second and third magnetic films, in which an insulating and non-magnetic single film in contact with the second and third magnetic films covers at least the first magnetic film.

REFERENCES:
patent: 5652687 (1997-07-01), Chen et al.
patent: 5805391 (1998-09-01), Chang et al.
patent: 5872693 (1999-02-01), Yoda et al.

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