Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1980-10-23

1982-03-09

Pianalto, Bernard D.

Stock material or miscellaneous articles

Composite

Of polyamidoester

427130, 428694, 428900, B05D 512

Patent

active

043189610

ABSTRACT:
A master magnetic recording medium comprises a polymer film substrate coated with a magnetic layer comprising a binder, a metallic magnetic powder A obtained by a wet reduction and a metallic magnetic powder B obtained by a dry reduction wherein both said magnetic powders A and B have each coercive force of 1800 Oe or higher and each saturated magnetization .sigma.s of 130 emu/g. or higher and a ratio of said magnetic powder A to said magnetic powder B is in a range of 0.1 to 10 by weight.

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