Magnetic recording medium including a backcoat layer containing

Details Magnetic recording medium including a backcoat layer containing Magnetic recording medium including a backcoat layer containing

1997-02-12

1998-12-22

Resan, Stevan A.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428332, 428522, 428694BG, 428694BB, 428900, G11B 570

Patent

active

058516506

ABSTRACT:
The magnetic recording medium of this invention comprises a magnetic layer formed on one of the opposite surfaces of a nonmagnetic support and a backcoat layer using a nonmagnetic powder and a binder as main components thereof and formed on the other surface thereof and uses as the binder in the backcoat layer a vinyl chloride-based copolymer having an amine-modified vinyl unit and an acidic functional group-containing vinyl unit. Owing to this construction, a paint to be used therein realizes perfect dispersibility and perfect stability. As a result, the backcoat layer to be formed therein is enabled to acquire excellent surface properties and the magnetic recording medium to be finally produced is allowed to exhibit an excellent electromagnetic conversion property.

REFERENCES:
patent: 4880693 (1989-11-01), Ryoke et al.
patent: 4886703 (1989-12-01), Hasumi et al.
patent: 5098783 (1992-03-01), Watanabe et al.
patent: 5510140 (1996-04-01), Kurose et al.
patent: 5616398 (1997-04-01), Kurose et al.

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