Production of magnetic recording media having a backing coating

Details Production of magnetic recording media having a backing coating Production of magnetic recording media having a backing coating

1984-07-12

1985-08-13

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

427128, H01F 1002

Patent

active

045349991

ABSTRACT:
Magnetic recording media which have a thin backing coating and consist of a non-magnetic flexible base and a magnetic layer which is applied to one side of the base and comprises magnetic material finely dispersed in an organic binder are produced by applying a dispersion of finely divided non-magnetizable conductive and non-conductive solids and conventional additives in a solution of a polymeric binder in an organic solvent to that side of the base which is opposite the magnetic layer by means of a knife-coater, and then drying the layer, a high molecular weight organic compound which acts as a thickener being added to the backing coating dispersion.

REFERENCES:
patent: 3209054 (1965-09-01), Englisch
patent: 3293066 (1966-12-01), Haines
patent: 3649358 (1972-03-01), Johnston
patent: 4058646 (1977-11-01), Vaeth et al.
patent: 4135031 (1979-01-01), Akashi et al.
patent: 4320171 (1982-03-01), Motz et al.

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