Magnetic recording disk

Details Magnetic recording disk Magnetic recording disk

1987-10-21

1989-05-09

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

427131, 428336, 428694, 428900, G11B 570

Patent

active

048289035

ABSTRACT:
A magnetic recording disk comprising a nonmagnetic support and magnetic recording layers provided on both surfaces of said support, said magnetic recording layers comprising a ferromagnetic metal powder dispersed in a binder, which is characterized in that:
said disk has a thickness in the range of 20-60 .mu.m and a flexural stiffness in the range of 2.0-200 g.multidot.mm;
and
each of said magnetic recording layers has a center line average height of not more than 0.03 .mu.m.

REFERENCES:
patent: 4450199 (1984-05-01), Tadokoro et al.
patent: 4451531 (1984-05-01), Isobe et al.
patent: 4497865 (1985-02-01), Minami et al.
patent: 4537833 (1985-08-01), Kasuga et al.
patent: 4701364 (1987-10-01), Miyoshi et al.

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