Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1986-09-09

1987-10-20

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428323, 428328, 428329, 4284259, 428694, 428695, 428900, G11B 568

Patent

active

047013729

ABSTRACT:
A magnetic recording medium characterized by a magnetic layer comprising (A) magnetic fine particles of plate-like hexagonal ferrite having a particle size of 0.3 microns or less and an easily magnetizable axis in the direction vertical to the flat plate surface (B) a polyurethane resin having a metal sulfonate group and (C) one or more esters of C.sub.10 -C.sub.18 fatty acids with alcohols having not more than 15 carbon atoms.

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patent: 4634633 (1987-01-01), Ninomiya
patent: 4637959 (1987-01-01), Ninomiya
patent: 4656089 (1987-04-01), Ninomiya

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