Method for preparing a magnetic recording medium

Details Method for preparing a magnetic recording medium Method for preparing a magnetic recording medium

1992-11-18

1994-08-02

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

427131, 427132, 427250, 4272553, 427404, 4274071, B05D 512

Patent

active

053344138

ABSTRACT:
A ferromagnetic thin metal film type magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a ferromagnetic thin metal film, wherein a perfluoropolyether having at least one polar group having the saturation adsorption amount (mg/m.sup.2) of at least 4.0 mg/m.sup.2 against the ferromagnetic thin metal film is coated or applied onto the surface of the ferromagnetic thin metal film. There is also disclosed a method for preparing a ferromagnetic thin metal film type magnetic recording medium comprising forming a ferromagnetic thin metal film, subjecting the ferro-magnetic thin metal film to a treatment with oxygen gas, ozone gas, a heat treatment or a treatment with an inert gas, and then applying a perfluoropolyether having at least one polar group to the ferromagnetic thin metal film.

REFERENCES:
patent: 3778308 (1973-12-01), Roller
patent: 4940606 (1990-07-01), Hilgers et al.

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