Armstrong, Nikaido, Marmelstein & Kubovcik
Magnetic recording medium
 This invention provides a magnetic recording medium, in particular, magnetic recording tape whose coefficient of friction is decreased and running durability is improved without deteriorating the S/N property, which comprises a magnetic layer on one side of a support and a back layer on the other side thereof, the back layer containing a filler dispersed in a binder, characterized in that the binder consists essentially of a cellulose resin, a diolefin- or olefin-type synthetic rubber and a polyisocyanate. 
Fuji Photo Film Co., Ltd.
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Toshimitsu Masaaki Yasuyuki Takahito
Okutsu Fujiyama Yamada Miyoshi