Dynamic magnetic information storage or retrieval – Record medium
Patent
1979-01-02
1981-09-01
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record medium
G11B 568
Patent
active
042875447
ABSTRACT:
A carrier for magnetic data recorded therein by perpendicular recording comprises a non-magnetic substrate having at least one substantially plane surface provided with a magnetic data layer of an anisotropic magnetic material having its axis of easy magnetization perpendicular to the said plane surface, and includes an additional layer of an anisotropic magnetic material whose axis of hard magnetization is parallel to the said plane surface. An intermediate non-magnetic, insulative coupling layer may be provided to maximize magneto-static coupling between the layers while minimizing energy exchanges therebetween. A further non-magnetic sub-layer may be provided directly on the plane surface of the substrate to assure good adhesion of the additional layer to the substrate and isolation thereof from the magnetic layer.
REFERENCES:
patent: 3052567 (1962-09-01), Gabor et al.
patent: 3185775 (1965-05-01), Camras
patent: 3878367 (1975-04-01), Fayling et al.
patent: 4075384 (1978-02-01), Suzuki et al.
IBM/TDB, vol. 9, No. 2, Jul. 1966, p. 184, "Recording Medium", by Bale et al.
Applied Physics Letters, Feb. 1, 1966, vol. 8, No. 3, pp. 73-74, "Coercive Force of Thin Magnetic Films ***", by Sugita et al.
IEEE Transaction on Magnetics, vol. MAG-13, No. 5, Sep. 1977, pp. 1272-1277, "An Analysis for the Magnetization Mode for High Density Magnetic Recording" by Iwasaki et al.
Compagnie Internationale pour l'Informatique -CII-Honeywell Bull
Wolff John H.
LandOfFree
Magnetic data carrier for perpendicular recording does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic data carrier for perpendicular recording, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic data carrier for perpendicular recording will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1678979