Magnetic head assembly for perpendicular magnetic recording

Details Magnetic head assembly for perpendicular magnetic recording Magnetic head assembly for perpendicular magnetic recording

1988-05-10

1989-10-10

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

360119, 360122, G11B 5147, G11B 5187, G11B 523

Patent

active

048735990

ABSTRACT:
A magnetic recording head assembly for perpendicular magnetic recording for the type in which both the main magnetic pole and auxiliary magnetic pole are on the same side of the magnetic medium. The auxiliary magnetic pole is made from a material having the property that the permeability varies in direction of relative movement between the magnetic recording medium and the magnetic head assembly, with the permeability progressively increasing from each edge to the center of the auxiliary magnetic pole.

REFERENCES:
patent: 4631612 (1986-12-01), Shiiki et al.
patent: 4740855 (1988-04-01), Diepers et al.
patent: 4764833 (1988-08-01), Imamura et al.
patent: 4771350 (1988-09-01), Desserre
patent: 4807076 (1989-02-01), Nakashima et al.

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