Magnetic recording medium having a backcoat layer comprising non

Details Magnetic recording medium having a backcoat layer comprising non Magnetic recording medium having a backcoat layer comprising non

Filed on

1988-08-05

Date issued

1992-03-24

Examiner

Cashion, Jr., Merrell C.

Patent Class

Stock material or miscellaneous articles

SubClass

Web or sheet containing structurally defined element or...

SubSubClass

Including a second component containing structurally defined...

Other Related Categories

428336, 428402, 4284246, 428694, 428900, G11B 500

Type

Patent

Status

active

Patent number

050987836

Description

ABSTRACT:
A magnetic recording medium comprising a non-magnetic support having on one surface thereof a magnetic layer and on the opposite surface thereof a backing layer comprising non-magnetic particles dispersed in a binder containing a copolymer of (a) at least one of a vinyl monomer containing a dialkylaminoalkyl group and a vinyl monomer containing a quaternary salt of a dialkylaminoalkyl group, and (b) a copolymerizable vinyl monomer.

REFERENCES:
patent: 4328935 (1982-05-01), Steel
patent: 4556611 (1985-12-01), Nakajima
patent: 4734330 (1988-03-01), Oiyama et al.
patent: 4770941 (1988-09-01), Imai et al.
patent: 4784913 (1988-11-01), Nakamura
patent: 4880692 (1989-11-01), Ryoke et al.
patent: 4880693 (1989-11-01), Ryoke et al.
patent: 4886703 (1989-12-01), Hasumi et al.

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