Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1977-07-13

1980-12-16

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Having magnetic properties, or preformed fiber orientation...

428626, 428632, 428652, 428653, 428678, 428680, 428 62, 428457, 428900, 428928, 427132, H01F 106, H01F 133

Patent

active

042398355

ABSTRACT:
A magnetic recording medium wherein a ferromagnetic substance consisting of Fe, Co, Ni or alloy thereof is vacuum evaporated and deposited on a substrate made of a plastic film or a sheet of non-magnetic metal. The thin ferromagnetic film has the columnar crystal structure, and the columnar crystals are coated with a layer of oxide of the ferromagnetic substance.

REFERENCES:
patent: 2970075 (1961-01-01), Grenoble
patent: 3433721 (1969-03-01), Wolf
patent: 3471271 (1969-10-01), Brown et al.
patent: 3520664 (1970-07-01), York
patent: 3702239 (1972-11-01), Nogy et al.
patent: 3857734 (1974-12-01), Chem et al.
patent: 3996095 (1976-12-01), Ahm et al.
patent: 4005698 (1977-02-01), Cuomo et al.
patent: 4024489 (1977-05-01), Bajoreh et al.
patent: 4074016 (1978-02-01), Trippel
patent: 4088547 (1978-05-01), Albertson
Hackh's Chemical Dictionary 4th Edition, McGraw Hill pg. 453 (1969).
Albertson, C. Machine Design, pg. 24, "New Solar Energy Absorber Hold Its Heat" Apr. 3, 1975.

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