Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1978-03-17

1981-01-20

Silverman, Stanley S.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

75 05AA, 75 05BA, 148105, 360131, 360134, 427131, 427132, 427204, 428336, 428377, 428539, 428900, H01F 106

Patent

active

042463165

ABSTRACT:
This invention relates to a magnetic recording medium comprising a non-magnetic support and magnetic layer provided thereon containing a ferromagnetic metal powder, the magnetic layer having a multilyaer structure consisting of a lower layer containing acicular grains obtained by dry process reduction and an upper layer containing chain-like grains obtained by wet process reduction, the upper layer being provided on the lower layer. This magnetic recording medium is particularly suitable for high density recording.

REFERENCES:
patent: 2643130 (1953-06-01), Kornei
patent: 2694656 (1954-11-01), Cumnas
patent: 2711901 (1955-06-01), Von Behren
patent: 3149996 (1964-09-01), Wagner et al.
patent: 3185775 (1965-05-01), Camras
patent: 3206338 (1965-09-01), Miller et al.
patent: 3567525 (1971-03-01), Graham et al.
patent: 3661556 (1972-05-01), Jolley et al.
patent: 3761311 (1973-09-01), Perrington et al.
patent: 3767464 (1973-10-01), Akushi et al.
patent: 3790407 (1974-02-01), Merten et al.
patent: 4063000 (1977-12-01), Aonuma et al.
patent: 4109046 (1978-08-01), Hammon et al.

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