Ferromagnetic recording medium

Details Ferromagnetic recording medium Ferromagnetic recording medium

1981-03-17

1983-10-18

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

360134, 360135, 360136, 427128, 427131, 427132, 428215, 428216, 428336, 428692, 428694, 428695, 428900, 428611, 428928, G11B 570, B32B 702

Patent

active

044105835

ABSTRACT:
A magnetic recording medium having a base, a first magnetic layer formed on the base, and a second magnetic layer formed on the first magnetic layer. The magnetic recording medium further comprises a third magnetic layer which does not contain a binder formed on the second magnetic layer. A third magnetic layer containing a binder has a predetermined thickness to cover surface roughness of the second magnetic layer and functions as a protection layer for the second magnetic layer.

REFERENCES:
patent: 4172171 (1979-10-01), Suzuki et al.
patent: 4200678 (1980-04-01), Pister et al.
patent: 4237189 (1980-12-01), Deffeyes

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