Magnetic head for increasing track density of a magnetic disk

Details Magnetic head for increasing track density of a magnetic disk Magnetic head for increasing track density of a magnetic disk

1995-05-18

2000-10-03

Korzuch, William R.

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

G11B 539

Patent

active

061281662

ABSTRACT:
According to this invention, there is provided a magnetic recording/reproducing system having a recording head for recording a signal in a magnetic recording medium along recording tracks having a predetermined track pitch and a reproducing head for reproducing the recorded signal. A relationship between a recording track width Tw of the recording head and a reproduction width Tr of the reproducing head is defined as Tr>Tw. When conditions g<(1500/Hc-Hc/4000.pi.+0.3)/(Hc/400.pi.-1/2) and g.gtoreq.(1500/Hc-Hc/4000.pi.+0.3-Tp+Tw)/(Hc/400.pi.-1/2) are satisfied, an erase region is formed between the recording tracks. In this case, the gap length of the recording head is represented by g [.mu.m], the recording track width is represented by Tw [.mu.m], the track pitch is represented by Tp [.mu.m], and the coercive force of the recording medium is represented by Hc [Oe].

REFERENCES:
patent: 3975772 (1976-08-01), Lin
patent: 4803580 (1989-02-01), Mowry
patent: 5079662 (1992-01-01), Kawakami et al.
patent: 5168409 (1992-12-01), Koyama et al.

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