Perpendicular magnetic recording head

Details Perpendicular magnetic recording head Perpendicular magnetic recording head

1982-09-23

1986-02-18

Kilgore, Robert M.

Dynamic magnetic information storage or retrieval

Head

Core

360119, 360121, G11B 512, G11B 527, G11B 528, G11B 525

Patent

active

045716536

ABSTRACT:
A perpendicular magnetic recording head comprising a pole formed of a highly permeable magnetic thin film facing at the end thereof the magnetic surface of a recording medium, a side member formed of a highly permeable magnetic material joined with the film surface of the pole, a nonmagnetic holder for holding the pole and the side member from the side surfaces, the nonmagnetic holder having coil hole, and an exciter coil wound around the pole and the side member through the coil hole, characterized in that the coil hole is gradually increasing in width from the end of the side member toward the rear.

REFERENCES:
patent: 3875545 (1975-04-01), Curtiss
patent: 4115827 (1978-09-01), Gooch
patent: 4287540 (1981-09-01), Cheatham
patent: 4316228 (1982-02-01), Fujiwara
patent: 4383284 (1983-05-01), Isshiki
patent: 4413297 (1983-11-01), Tanaka

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