Wear resisting undercoat for thin film magnetic recording media

Details Wear resisting undercoat for thin film magnetic recording media Wear resisting undercoat for thin film magnetic recording media

1982-10-25

1986-05-06

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

360134, 360135, 427128, 427131, 427132, 428336, 428329, 428422, 428447, 428694, 428695, 428900, G11B 572

Patent

active

045871574

ABSTRACT:
A flexible magnetic recording media, such as disks or magnetic tape, having a non-magnetic layer intermediate the substrate and magnetic recording layers providing improved durability of the magnetic recording layer including a binder comprised of non-magnetic particles of .alpha.Fe.sub.2 O.sub.3 with similar physical properties as those of the magnetic recording layer (.gamma.Fe.sub.2 O.sub.3 or Co-.gamma.Fe.sub.2 O.sub.3) and a reservoir of lubricant.

REFERENCES:
patent: 3959553 (1976-05-01), Hartmann
patent: 4075384 (1978-02-01), Suzuki
patent: 4128672 (1978-12-01), Wunsch
patent: 4183976 (1980-01-01), Yamada
patent: 4188434 (1980-02-01), Loran
patent: 4259392 (1981-03-01), Suzuki
patent: 4275113 (1981-06-01), Saito
patent: 4321303 (1982-03-01), Morita
patent: 4328935 (1982-05-01), Steel

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