Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1987-03-20

1990-09-11

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

252 6251, 428328, 428329, 428403, 428404, 428694, 428900, G11B 2300

Patent

active

049562207

ABSTRACT:
A magnetic recording medium with improved output characteristics and durability is provided by using magnetic powder comprising iron-containing particles each of which carries a compound containing aluminum and/or a compound containing silicon in such amounts that, in the whole magnetic powder, a weight ratio of silicon to iron is from 0.010:1 to 0.150:1, a weight ratio of aluminum to iron is from 0.040:1 to 0.150:1, and a weight ratio of aluminum to silicon is from 1:1 to 15:1.

REFERENCES:
patent: 3736181 (1973-05-01), Pye
patent: 3814598 (1974-06-01), Gabriel
patent: 4043846 (1977-08-01), Amemiya
patent: 4169802 (1979-10-01), Basile
patent: 4255492 (1981-03-01), Audran
patent: 4336310 (1982-06-01), Okuyama
patent: 4390361 (1983-06-01), Sueyoshi
patent: 4400432 (1983-08-01), Buxbaum
patent: 4404254 (1983-09-01), Franz

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