Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1990-06-12

1991-10-22

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428329, 428694, 428695, 428900, G11B 2300

Patent

active

050594699

ABSTRACT:
The magnetic recording medium has superposed on at least one surface of a non-magnetic support member a magnetic layer possessing a surface shape such that the space-average wavelength (2.alpha.a) is in the range of 15 .mu.m to 30 .mu.m and the surface-average roughness (sRa) in the range of 0.008 .mu.m to 0.025 .mu.m. The magnetic recording medium combines highly satisfactory property of media and magnetic interface with high durability and high reproducing output.

REFERENCES:
patent: 4450199 (1984-05-01), Todokoro et al.
patent: 4537833 (1985-08-01), Kasuga et al.
patent: 4678706 (1987-07-01), Tokunaga et al.
patent: 4701372 (1987-10-01), Akiyama et al.
patent: 4705718 (1987-11-01), Kitahota et al.
patent: 4828903 (1989-05-01), Ejiri et al.

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