Sughrue, Mion, Zinn, Macpeak, and Seas
Magnetic recording medium
 A magnetic recording medium is described, comprising a non-magnetic support having coated thereon on opposite surfaces a magnetic layer containing a magnetic substance and a binder-containing backing layer, wherein the magnetic layer has a light transmittance of 2% or more for light having a wavelength of 900 nm, the backing layer has a transmittance of from 1 to 10% for light having a wavelength of 900 nm, the magnetic recording medium as a whole has a transmittance of 1% or less for light having a wavelength of 900 nm, and the backing layer has a center line average roughness (Ra) of 0.05 .mu.m or less at a cut-off value of 0.08 mm. 
Fuji Photo Film Co., Ltd.
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Masaaki Toshimitu Takahito Norio Kenichi
Fujiyama Okutu Miyoshi Nasu Masuyama