Method of producing magnetic recording medium

Details Method of producing magnetic recording medium Method of producing magnetic recording medium

1977-02-24

1981-04-07

Pianalto, Bernard D.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

427 35, 427 36, 427 38, 427 44, 427 541, 427132, 427296, 427302, H01F 1002

Patent

active

042604664

ABSTRACT:
A method of producing a magnetic recording layer on a support comprising simultaneously depositing a ferromagnetic material and a polymer on a support using a vapor deposition technique such as vacuum deposition, sputtering, etc., thereby to produce thereon a magnetic recording layer of a composite film of the ferromagnetic material and the polymer. A further embodiment for producing a magnetic recording layer comprises simultaneously depositing a ferromagnetic material and a monomer or oligomer on the support using a vapor deposition technique, polymerizing the deposited layer, e.g., using a polymerization catalyst or by applying ionizing or electromagnetic rays thereto, to form a composite film of the ferromagnetic material and the polymer. The magnetic recording layer thus obtained in either embodiment can be used for high density recording.

REFERENCES:
patent: 3278441 (1966-10-01), Manuel et al.
patent: 3690932 (1972-09-01), Geffcken et al.
patent: 3713869 (1973-01-01), Geffcken et al.

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