Magnetic recording medium having an improved back coat layer

Details Magnetic recording medium having an improved back coat layer Magnetic recording medium having an improved back coat layer

1986-05-28

1988-09-13

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427128, 427131, 428328, 428403, 428407, 4284259, 428695, 428694, 428900, G11B 5708

Patent

active

047709324

ABSTRACT:
A magnetic recording medium which comprises a non-magnetic substrate, a magnetic recording layer formed on one side of said substrate, and a back coat layer formed on the other side of the substrate. The back coat layer is made of a composition which comprises particles of carbon black, titanium monoxide or a mixture thereof having an average size not larger than 1 micrometer and a resin binder dispersing the particles therein. The particles are individually precoated with an isocyanate compound. When coated titanium monoxide particles are used singly, non-coated carbon black is effectively used in combination.

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