Thin-film magnetic head with layer structure and with pole piece

Details Thin-film magnetic head with layer structure and with pole piece Thin-film magnetic head with layer structure and with pole piece

1988-10-06

1990-08-21

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Gap spacer

360122, 360125, 360126, G11B 5187, G11B 523, G11B 5147

Patent

active

049511661

ABSTRACT:
Thin-film magnetic head has a layer structure for vertical magnetization. The magnetic head is constructed in thin-film technology and is guided over a recording medium to be magnetized vertically. The head includes a ring core head magnetic guide body with a first and second magnetic shank which form sequentially arranged magnetic poles. The write function is carried out with the first magnetic shank and both magnetic shanks carry out the read function. This magnetic head is constructed so that the concomitant reading of data residues in the margin regions of data tracks is prevented. To this end the magnetic pole of the first magnetic shank has a greater width than the magnetic pole of the second magnetic shank with both magnetic shanks being constructed largely of the same material at least in their end regions bordering on the magnetic poles.

REFERENCES:
patent: 4321641 (1923-03-01), Lee
patent: 4575777 (1911-03-01), Hosokawa
"A New Type of Magnetic Head May Be Just Around the Corner", Electronics, May 14, 1987 pp. 31-32.
"Erase Profiles of Floppy Disk Heads", IEEE Transactions on Magnetics, vol. Mag-20, No. 4, Jul. 1984, pp. 528-541.
European Search Report No. RS 79905 DE.
"Discrete Tracks for Saturation Magnetic Recording", IEEE Transactions on Electronic Computers, E.C.-12 (1963,08), 4, 383-387.
"Perpendicular Magnetic Recording", IEEE Transactions on Magnetics, vol. Mag-16, No. 1, Jan. 1980, pp. 71-76.
"Perpendicular Magnetic Recording-Evolution and Future-", IEEE Transactions on Magnetics, vol. Mag-20, No. 5, Sep. 1984 pp. 657-662.

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