Production of magnetic recording media possessing a backing coat

Details Production of magnetic recording media possessing a backing coat Production of magnetic recording media possessing a backing coat

1985-02-15

1987-02-24

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of inorganic material

427128, 427131, 428336, 428900, G11B 570

Patent

active

046457232

ABSTRACT:
A process for the production of magnetic recording media by applying a magnetic layer, which consists essentially of magnetic material finely dispersed in organic polymers, to one side of a flexible base, and applying a non-magnetizable backing coating which is free of inorganic solids to that side of the base which is opposite the magnetic layer, wherein the backing coating consists of two or more polymers which are incompatible with one another and have precipitated from a solvent mixture, and magnetic recording media produced by this process.

REFERENCES:
patent: 3293066 (1966-12-01), Haines
patent: 4032682 (1977-06-01), Masson
patent: 4135031 (1979-01-01), Akashi et al.
patent: 4388360 (1983-06-01), Miyoshi et al.
patent: 4439486 (1984-03-01), Yamada

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