Magnetic recording medium having a magnetic layer containing hex

Details Magnetic recording medium having a magnetic layer containing hex Magnetic recording medium having a magnetic layer containing hex

1995-06-06

1996-04-02

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428216, 428329, 428336, 428402, 428689, 428694BH, 428694BS, 428900, G11B 500

Patent

active

055039111

ABSTRACT:
A coating film of a double-layer structure for a recording medium is formed by providing a non-magnetic buffer layer just beneath a magnetic recording layer composed of magnetic hexagonal platelet ferrite particles, wherein the thickness of the magnetic recording layer is 0.1-0.6 .mu.m and the ratio of thickness of the buffer layer to that of the magnetic recording layer is 1:1 to 4:1. This coating film makes it possible to realize the excellent medium surface characteristics that could not be obtained with the conventional techniques and to obtain a high recording density excelling those of the conventional in-plane longitudinal recording media.

REFERENCES:
patent: 3846843 (1974-11-01), Franer
patent: 3959553 (1976-05-01), Hartmann et al.
patent: 4587157 (1986-05-01), Brock et al.
patent: 4666769 (1987-05-01), Miyata et al.
patent: 4746558 (1988-05-01), Shimozawa et al.
patent: 4963433 (1990-10-01), Ogawa et al.
patent: 5104750 (1992-04-01), Kubo et al.

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