Multihead magnetic head assembly having a single piece faceplate

Details Multihead magnetic head assembly having a single piece faceplate Multihead magnetic head assembly having a single piece faceplate

1989-10-04

1990-08-14

Severin, David J.

Dynamic magnetic information storage or retrieval

Head

Head surface structure

360129, G11B 5187

Patent

active

049492080

ABSTRACT:
A magnetic head assembly has a plurality of magnetic heads of magnetic ferrite bonded in a single piece faceplate of magnetic ferrite. The magnetic heads are substantially surrounded by the magnetic ferrite faceplate. The bulk shielding properties of the magnetic ferrite faceplate effectively shield each magnetic head from crosstalk produced by other heads. Preferably, the faceplate and magnetic heads are formed from the same magnetic ferrite. The magnetic head assembly of the invention has application for use in magnetic tape recorders and magnetic disc drives.

REFERENCES:
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patent: 3400386 (1968-09-01), Sinott
patent: 3466637 (1969-09-01), Hagadorn
patent: 3543396 (1970-12-01), Illg et al.
patent: 3544982 (1970-12-01), Hanak
patent: 3668775 (1972-06-01), Morita et al.
patent: 3761641 (1973-09-01), Mlinaric
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patent: 3842494 (1974-10-01), Chiba et al.
patent: 3909932 (1975-10-01), Kroon
patent: 4649450 (1987-03-01), Linke
Albrecht et al., "Shield for Magnetic Head Assembly", IBM TDB, May 1974, vol. 16, No. 12, p. 4057.
"Magnetic Tape Recording Technical Fundamentals", 4th printing revised, 1984, pp. 23-25.
"The Complete Handbook of Magnetic Recording", Jorgensen, 1980, pp. 158-166.

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