Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1984-11-20

1986-10-14

Swisher, Nancy A. B.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428900, 428694, 252 6254, G03C 724, G11B 570, H01F 1002

Patent

active

046172343

ABSTRACT:
An improved magnetic recording medium comprising a magnetic layer formed by applying a ferromagnetic metal powder together with a binder to a non-magnetic base is described. The improvement is that the ferromagnetic metal powder has a saturation magnetism of 120 to 140 emu/g and a specific surface area measured by the BET method of 23 to 35 m/g, and the magnetic layer has a coercive force of 670 to 770 oersteds and a residual magnetic flux density of about 2,000 to 3,200 gauss. The magnetic recording medium is suitable for cassette tapes used in a high position and has excellent reproductive output in the whole band while keeping noise low.

REFERENCES:
patent: 4207092 (1980-06-01), Berry
patent: 4302523 (1981-11-01), Audran et al.
patent: 4396668 (1983-08-01), Saito et al.
patent: 4410590 (1983-10-01), Kawahara et al.
patent: 4439486 (1984-03-01), Yamada et al.
patent: 4444835 (1984-04-01), Togawa et al.
patent: 4455345 (1984-06-01), Miyatuka et al.
patent: 4480004 (1984-10-01), Togawa et al.
patent: 4500599 (1985-02-01), Ogawa et al.
patent: 4537833 (1985-08-01), Kasuqa et al.
patent: 4555431 (1985-11-01), Miyatsuka

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