Method for producing a magnetic disk

Details Method for producing a magnetic disk Method for producing a magnetic disk

1994-09-06

1996-08-20

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

427131, 427289, 427365, 427377, B05D 512

Patent

active

055477046

ABSTRACT:
A flexible magnetic disk has a first magnetic layer formed on a first surface of a circular polymeric substrate by coating and drying a magnetic coating material. After the first magnetic layer is formed and dried, a second magnetic layer is formed on a second surface of the polymeric substrate by coating and drying the magnetic coating material. The second magnetic layer formed on the second surface is then calendered to form a magnetic recording surface. The resulting magnetic disk provides for an improved surface vibration during high-speed rotation of the disk, and provides very good head touch.

REFERENCES:
patent: 3398011 (1968-08-01), Neirotti et al.
patent: 4499138 (1985-02-01), Yamamoto
patent: 4529659 (1985-07-01), Hoshino et al.

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