Method of manufacturing a magnetic recording medium of thin meta

Details Method of manufacturing a magnetic recording medium of thin meta Method of manufacturing a magnetic recording medium of thin meta

1982-07-30

1983-10-04

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

427132, 427172, H01F 1002

Patent

active

044078617

ABSTRACT:
A method of manufacturing a magnetic recording medium of thin metallic film type comprises, a first step of forming a thin magnetic metallic film layer on a base film which heat-contracts both in a first direction and in a second direction perpendicular to first direction, and a second step of heating the base film, while preventing the base film from heat-contracting in the first direction and thus heat-contracting the base film in the second direction, thereby making cracks in the thin magnetic metallic film layer which extend substantially parallel to the first direction of the base film.

REFERENCES:
patent: 3915779 (1975-10-01), Yoshikawa et al.

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