Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1987-10-20

1989-02-21

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427128, 428694, 428900, G11B 570

Patent

active

048064173

ABSTRACT:
An improvement of a magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on the support which comprises a binder and a ferromagnetic powder dispersed therein is disclosed. The binder contains a resin component having a metal sulfonate group and the ferromagnetic powder contains water in an amount corresponding to moles of 20-80 times as much as the number of moles of the metal sulfonate group contained in the binder.

REFERENCES:
patent: 4407901 (1983-10-01), Miyatsuka
patent: 4439486 (1984-03-01), Yamada
patent: 4571364 (1986-02-01), Kasuga
patent: 4587170 (1986-05-01), Hanai
patent: 4594174 (1986-06-01), Nakayama
patent: 4600521 (1986-07-01), Nakamura
patent: 4652388 (1987-03-01), Gold
patent: 4690863 (1987-09-01), Miyoshi
patent: 4707410 (1987-11-01), Hata
patent: 4707411 (1987-11-01), Nakayama

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