Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1985-06-11

1987-12-29

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427128, 428329, 428694, 428900, 428336, G11B 5706, G11B 5708

Patent

active

047160764

ABSTRACT:
Magnetic recording medium having a magnetic layer in which magnetic powder of the magnetic layer includes iron oxide magnetic powder with more than 30 m.sup.2 /g specific surface area measured by BET method, chromium dioxide (CrO.sub.2) magnetic powder with more than 30 m.sup.2 /g specific surface area measured by BET method, and the rate of the chromium dioxide powder is within a range more than 3% to less than 20% by weight in the total amount of the magnetic powder in the magnetic powder. Said magnetic layer further includes carbon black.

REFERENCES:
patent: 4316927 (1982-02-01), Kimura et al.
patent: 4435485 (1984-03-01), Nakajima et al.
patent: 4439486 (1984-03-01), Yamada et al.
patent: 4500599 (1985-02-01), Ogawa et al.
patent: 4539257 (1985-09-01), Ryoke et al.
patent: 4551386 (1985-11-01), Yamaguchi et al.

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