Oblon, Fisher, Spivak, McClelland & Maier
Magnetic recording medium
 Disclosed herein is a magnetic recording medium comprising a biaxially oriented polyester film having an extremely low surface roughness and containing fine particles and specific higher aliphatic carboxylic acids and/or derivatives thereof, and a magnetic layer formed on one side of the polyester film. The magnetic recording medium exhibits a stable travelling nature even when it is not provided with a back coat layer, and is usable as a high-quality and high-density magnetic recording medium. 
Diafoil Company, Limited
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Y10T G11B B29C Y10T Y10T C08J Y10T Y10S Y10T Y10T Y10T Y10T Y10T Y10T C08J Y10T Y10T
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Shigeyuki Shigeo
Watanabe Utsumi