Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1990-07-27

1992-03-10

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427131, 428329, 428694, 428900, G11B 2300

Patent

active

050949080

ABSTRACT:
A magnetic recording medium is disclosed, which comprises a non-magnetic support having on one surface of the support a backing layer containing carbon black and a binder and on the opposite surface of the support a magnetic recording layer containing a ferromagnetic power and a binder, the ferromagnetic powder being oriented in the magnetic recording layer such that the ratio of the number of diffraction points N(220)/N(113) measured at the surface region of the magnetic layer by high energy electron diffraction is at most 1.65; and the squareness ratio Br/Bm of the magnetic layer is from 0.830 to 0.860 at 25.degree. C. The medium has excellent running durability, S/N ratio, and dropout properties.

REFERENCES:
patent: 4588647 (1986-05-01), Sakurai et al.
patent: 4728569 (1988-03-01), Ryoke et al.
patent: 4798755 (1989-01-01), Yamada et al.

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