Magnetic recording medium

Dynamic magnetic information storage or retrieval – Record medium

Patent

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Details

148105, 360134, 427131, 428551, G11B 574, H01F 102, B05D 512, B32B 702

Patent

active

044397968

ABSTRACT:
A magnetic recording medium is described having formed on a non-magnetic base at least two magnetic layers, each of the magnetic layers comprising ferromagnetic particles dispersed in a binder, wherein the ferromagnetic particles in the outermost magnetic layer are substantially cubic particles and have a side length of 0.3.mu. or less, and the ferromagnetic particles in an underlying magnetic layer are acicular particles.

REFERENCES:
patent: 3761311 (1973-09-01), Perrington
patent: 3855016 (1974-12-01), Enrreich
patent: 4072501 (1978-02-01), Quinby
patent: 4075384 (1978-02-01), Suzuki
patent: 4237506 (1980-12-01), Manly
patent: 4246316 (1981-01-01), Aonuma
patent: 4259392 (1981-03-01), Suzuki
patent: 4307156 (1981-12-01), Yanagisawa

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