Magnetic recording substance

Details Magnetic recording substance Magnetic recording substance

1977-02-14

1979-03-27

Silverman, Stanley S.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

252 6254, 252 6256, 252 6258, 360134, 428329, 428539, G11B 570

Patent

active

041466713

ABSTRACT:
In a magnetic recording substance comprising a non-magnetic support member and a magnetic recording layer provided thereon and consisting essentially of a ferromagnetic powder and a binder, the content of calcium component contained in the ferromagnetic powder is previously adjusted to 0.001% by weight or less.

REFERENCES:
patent: 3928709 (1975-12-01), Audran et al.
patent: 3996392 (1976-12-01), Berg et al.
patent: 4010310 (1977-03-01), Kubota et al.

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