Thin film magnetic head with an induction type magnetic transduc

Details Thin film magnetic head with an induction type magnetic transduc Thin film magnetic head with an induction type magnetic transduc

1996-12-24

1998-12-01

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 531

Patent

active

058447490

ABSTRACT:
In the thin film magnetic transducer element, the front end portions of the upper pole piece and the lower pole piece are partially removed in such a manner that they align non parallel to the gap film on he opposite sides of the gap film. The condition .DELTA.P1>.DELTA.P2 is satisfied when the difference between the maximum pole length P1max and the minimum pole length P1min of the lower pole piece is .DELTA.P1 and the difference between the maximum pole length P2max and the minimum pole length P2min of the upper pole piece is .DELTA.P2. The sub pulse is reduced and so the partial response method can be employed.

REFERENCES:
patent: 5079831 (1992-01-01), Reid
patent: 5157569 (1992-10-01), Kumasaka et al.
patent: 5305166 (1994-04-01), Inoue et al.
patent: 5331494 (1994-07-01), Fukuda et al.

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