Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1982-09-23

1984-04-24

Pianalto, Bernard D.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428328, 428403, 428457, 428694, 428900, H01F 1002

Patent

active

044448350

ABSTRACT:
A magnetic recording medium suitable for high-density recording, which comprises a magnetic layer containing uniaxial anisotropic, acicular iron oxide particles having a particle size of not more than 0.3.mu., with a surface layer containing a major amount of cobalt being formed on seeds of the magnetic particles, said magnetic recording medium having a residual magnetic flux density both in a vertical direction and in a horizontal or longitudinal direction of not less than 1000 gauss.

REFERENCES:
patent: 4125474 (1978-11-01), Dezawa et al.
patent: 4237506 (1980-12-01), Manly
patent: 4302523 (1981-11-01), Audran et al.
patent: 4303699 (1981-12-01), Tamura
patent: 4315052 (1982-02-01), Takahashi et al.
patent: 4337288 (1982-06-01), Takenaka et al.

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