Wood, Phillips, VanSanten, Hoffman & Ertel
Magnetic recording medium
 In a magnetic recording medium comprising a magnetic layer of a ferromagnetic powder dispersed in a resin binder and a nonmagnetic substrate for the layer, the magnetic layer contains zine aluminate (ZnAl.sub.2 O.sub.4) powder. The ferromagnetic powder is of chromium dioxide (CrO.sub.2) and the ZnAl.sub.2 O.sub.4 content in the magnetic layer is 0.01-1 wt % on the basis of the weight of the ferromagnetic powder. 
TDK Corporation
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additional inventional additional
Hiroyuki Norifumi
Yamada Kajimoto