Magnetic head having optimum spacer thickness disposed between d

Details Magnetic head having optimum spacer thickness disposed between d Magnetic head having optimum spacer thickness disposed between d

1976-06-03

1978-04-18

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Head

Gap spacer

360121, 360125, G11B 525, G11B 522, G11B 527

Patent

active

040854299

ABSTRACT:
In a magnetic head comprising a write-in excitation core and a read-out excitation core having a narrower track width than that of the write-in excitation core and forming a closed magnetic circuit with a gap interposed between the two cores, a non-magnetic spacer having thickness 1.5 to 5 times as great as the width of the gap is disposed at one or each end of the read-out excitation core with respect to the widthwise direction of the track thereof, and a dummy core is disposed adjacent to the read-out excitation core with the non-magnetic spacer interposed therebetween to form a closed magnetic circuit with the gap interposed between the dummy core and the write-in excitation core.

REFERENCES:
patent: 3167618 (1965-01-01), Oster et al.
patent: 3353168 (1967-11-01), Poumakis
patent: 3562443 (1971-02-01), Bos et al.
patent: 3662122 (1972-05-01), Grundtner et al.
patent: 3668332 (1972-06-01), Anderson
patent: 3827083 (1974-07-01), Hosaka et al.

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