Method of producing magnetic recording media

Details Method of producing magnetic recording media Method of producing magnetic recording media

1987-10-21

1989-12-05

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

427130, 427131, 427132, 427172, 427177, 427296, 427327, B05D 512

Patent

active

048851892

ABSTRACT:
A method for producing a magnetic recording medium, comprising the steps of: (1) preparing a takeup evaporated article under a takeup tension of 13.5.times.10.sup.-8 b/t Kg-weight or more when a magnetic metal/alloy thin film is provided on a flexible substrate that is b mm wide and t m thick by takeup evaporation; (2) rewinding said evaporated article under a takup tension of 13.5.times.10.sup.-8 b/t Kg-weight or less; and (3) preserving said rewound article in an oxidation accelerating atmosphere. A method for producing a magnetic recording medium comprising the steps of: (1) preparing a takeup evaporated article by providing a magnetic metal/alloy thin film on a flexible substrate by takeup evaporation and (2) preserving said takeup evaporated article under the condition that an air stream containing an oxidizing gas is generated in winding gaps of said evaporated article.

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