Core structure with L-shaped back member and magnetic bonding ma

Details Core structure with L-shaped back member and magnetic bonding ma Core structure with L-shaped back member and magnetic bonding ma

1974-09-30

1976-02-24

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

360121, G11B 514, G11B 5115

Patent

active

039407985

ABSTRACT:
The present invention relates to a magnetic recording head and specifically the back bar of a multi-channel magnetic recording head for use in high performance multitrack disc files. Crosstalk is substantially reduced by incorporating a specially shaped back bar, such as a back bar having an L-shaped cross section to enclose and reduce the crosscoupling fringing fields from the back gaps. In addition, the use of an epoxy with a magnetic filler material is included to further reduce the back gap fringing fields. The above-mentioned techniques when used in combination with a limited dimension intertrack shield can greatly reduce the crosstalk between cores of a high track density flying head.

REFERENCES:
patent: 3064333 (1962-11-01), Kristiansen et al.
patent: 3479738 (1969-11-01), Hanak
patent: 3789505 (1974-02-01), Huntt
patent: 3808135 (1974-04-01), Weigel et al.

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