Thin film magnet head for vertical magnetization

Details Thin film magnet head for vertical magnetization Thin film magnet head for vertical magnetization

1988-12-09

1991-01-22

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Core

360125, G11B 5147

Patent

active

049875108

ABSTRACT:
The thin film magnet head is to be guided over a recording medium to be magnetized perpendicularly, in which flux changes are to be registered along a track with a predetermined record wavelength and flux change density. The magnet head contains a flux-carrying, ring head-like guiding element with two magnet legs which constitute magnet poles which are arranged one behind the other and separated by a gap of predetermined width and having predetermined extents in the movement direction. With this magnet head the expanse for signal processing in a write/read channel is to be reduced. The magnet head fulfills this end by at least approximately satisfying the following relation:

REFERENCES:
patent: 2596912 (1952-05-01), Nygaard
patent: 4277809 (1981-07-01), Fisher et al.
patent: 4575777 (1986-03-01), Hosokawa
patent: 4580178 (1986-04-01), Wuori et al.
patent: 4710838 (1987-12-01), Jahnke
patent: 4782416 (1988-11-01), Hillenbrand et al.
IEEE Transactions on Magnetics: vol. Mag-11, No. 6, (Nov. 1985), pp. 1692-1696; vol. Mag-19, No. 5, (Sep. 1983), pp. 1611-1613; Mag-21, No. 5, (Sep. 1985), pp. 1338-1343; vol. Mag-16, No. 1, (Jan. 1980), pp. 114-119; vol. Mag-14, No. 5, (Sep. 1978), pp. 849-851; vol. Mag-16, No. 1, (Jan. 1980), pp. 71-76; vol. Mag-20, No. 5, (Sep. 1984), pp. 657-662 and pp. 675-680; vol. Mag-23, No. 1, (Jan. 1987), pp. 177-179.

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