Sughrue, Mion, Zinn, Macpeak and Seas
Magnetic recording medium
 A magnetic recording medium is described comprising a magnetic layer on one surface of a non-magnetic base and a back coating on the other surface of the base, said back coating being not more than 2.mu. thick and which contains an inorganic powder and a binder, said inorganic powder consisting of fine particles of an average size of from 0.01 to 0.1.mu. and coarse particles of an average size of from 0.1 to 0.8.mu.. 
Fuji Photo Film Co., Ltd.
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Masaaki Takahito Toshimitu
Fujiyama Miyoshi Okutu