Magnetic recording system

Details Magnetic recording system Magnetic recording system

1991-03-29

1993-06-15

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428329, 428408, 428694, 428900, B32B 516, B32B 900, G11B 566, G11B 572

Patent

active

052196526

ABSTRACT:
In the magnetic recording medium, the back coat layer includes the spherical particles having a diameter in the range of from 0.6 .mu.m to 1.2 .mu.m, and the amount of spherical particles in the back coat layer is in the range of from 0.05 weight % to 0.5 weight %. Fine studs are formed on the surface of the back coat layer, and it results in low coefficient friction of the back coat layer. In order to increase the binding power between the spherical particles and the binder resin(s), and to give good sliding characteristic to the back coat layer, a surface treatment is made on the spherical particles by using a silane group coupling agent, a titanate group coupling agent and/or a fatty acid having at least 12 carbon atoms.

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