Burns, Doane, Swecker & Mathis
Magnetic recording medium
 A magnetic recording medium comprising a non-magnetic support, a magnetic layer on a surface of the non-magnetic support, and a backing layer on a reverse surface of the non-magnetic support, composed of powder and a binder, and having a thickness of not more that 2 microns, wherein said powder comprises TiO.sub.2 powder and carbon black powder in the weight ratio of 4:6 to 10:0. The average particle size of TiO.sub.2 powder ranges from 0.01 to 0.8 microns. 
Fuji Photo Film Co., Ltd.
Y Y G Y Y Y G
Y10T Y10T G11B Y10T Y10T Y10S G11B
additional additional inventional additional additional additional inventional
Toshimitu Takahito Masaaki
Okutu Miyoshi Fujiyama