Dynamic magnetic information storage or retrieval – Head – Core
Patent
1988-10-26
1990-12-18
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Head
Core
360126, G11B 5127
Patent
active
049790641
ABSTRACT:
In a magnetic head, there is provided, in the gap, a superconducting material that has zero permeability and prevents the passage of the magnetic field in the gap. Various alternative embodiments are used to improve the efficiency of the head by channelling the magnetic flux outside the gap.
REFERENCES:
patent: 3098181 (1963-07-01), Cioffi
patent: 3214679 (1965-10-01), Richards
Patent Abstracts of Japan, vol. 9, No. 329, (P-416) [2052], Dec. 24, 1985 & JP 60154315, Aug. 14, 1985, Magnetic Head, Takihiro, Ogawa.
Patent Abstracts of Japan, vol. 6, No. 217 (P-152) [1095], Oct. 30, 1982 & JP 57120221, Jul. 27, 1982, Ring Head for Vertical Magnetization Recording and Reproduction, Mamoru Sugimoto.
IBM Technical Disclosure Bulletin, vol. 18, No. 1, Jun. 1975, pp. 19-22, New York, U.S.; L. T. Romankiw et al.
Thin Film and Thin-Film/Ferrite Hybrid Magnetic Heads.
Patent Abstracts of Japan, vol. 7, No. 30 (p-173) [1175], Feb. 5, 1983; & JP 57183616, 11/12/1982, Magnetic Head, Yutaka Hara.
Patent Abstracts of Japan, vol. 6, No. 27 (P-102) [905], Feb. 17, 1982 & P 56145514, 11/12/1981, Thin-Film Magnetic Head, Hiroshi Tsuchiya.
Castera Jean-Paul
Mage Jean-Claude
Rolland Jean-Luc
"Thomson-CSF"
Heinz A. J.
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