Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1987-07-02

1988-09-13

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

427 41, 427131, 427132, 428213, 428408, 428694, 428695, 428900, G11B 566

Patent

active

047709243

ABSTRACT:
In a magnetic recording medium comprising a magnetic layer in the form of predominantly cobalt ferromagnetic metal thin film on a plastic substrate, physical properties like strength and crack resistance as well as electromagnetic properties of the magnetic layer are improved by forming it as a multi-layered structure consisting of at least two layers, wherein the magnetic layer has a specific profile of oxygen concentration. The medium may be provided with a topcoat and/or backcoat layer.

REFERENCES:
patent: 4410583 (1983-10-01), Hanaoka
patent: 4555444 (1985-11-01), Hanaoka
patent: 4582746 (1986-04-01), Shirahata et al.

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