Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1986-05-01

1989-01-17

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

427128, 427131, 427132, 428212, 428378, 428329, 4284259, 428522, 428694, 428695, 428900, 252 6254, G11B 5716, G11B 5702

Patent

active

047987553

ABSTRACT:
A magnetic recording medium is disclosed, comprising a non-magnetic support having provided on one side thereof a magnetic recording layer comprising a binder having dispersed therein fine ferromagnetic particles and on the other side thereof a backing layer, wherein at least one of said magnetic layer and backing layer contains (1) a vinyl chloride resin having --SO.sub.3 M (wherein M is Li, Na, or K) groups and epoxy groups, and (2) polyurethane as binders. The medium has reduced output variation and improved running durability.

REFERENCES:
patent: 4070522 (1978-01-01), Ogasa
patent: 4368237 (1983-01-01), Yamada
patent: 4520079 (1983-05-01), Nakajima
patent: 4529661 (1985-07-01), Ninomiya
patent: 4562117 (1985-12-01), Kikukawa
patent: 4594174 (1986-06-01), Nakayama
patent: 4600521 (1986-07-01), Nakamura
patent: 4612244 (1986-09-01), Kaneda
patent: 4613545 (1986-09-01), Chubachi
patent: 4637959 (1987-01-01), Ninomiya
patent: 4707410 (1987-11-01), Hata
patent: 4707411 (1987-11-01), Nakayama

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