Magnetic recording and reproducing system

Details Magnetic recording and reproducing system Magnetic recording and reproducing system

1983-07-14

1986-12-23

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360122, 360132, G11B 5127

Patent

active

046316124

ABSTRACT:
A magnetic recording and reproducing system comprising (i) a magnetic head including a first magnetic pole whose saturation flux density is at least 7 kG and whose edge face is 0.15-0.5 .mu.m thick, and a second magnetic pole which lies on the same side as the first magnetic pole with respect to a recording medium and whose edge face is at least 10 times thicker than that of the first magnetic pole, and (ii) the perpendicular magnetic recording medium including a perpendicular magnetization layer which has a coercive force of 250-600 Oe. in a direction perpendicular to a plane thereof and which is 0.1-0.5 .mu.m thick.

REFERENCES:
patent: 3152225 (1964-10-01), Peters
patent: 4138702 (1979-02-01), Magnenet
patent: 4251842 (1981-02-01), Iwasaki et al.
patent: 4317148 (1982-02-01), Chi
patent: 4423450 (1983-12-01), Hamilton
patent: 4441131 (1984-04-01), Osanai
patent: 4442159 (1984-04-01), Dezawa et al.

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