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AssigneeTeijin Dupont Films Japan Limited
InventorsIeyasu Kobayashi, Shinji Muro, Takeshi Ishida
Estimating the term…
A biaxially oriented polyester film which has a Young's modulus (YMD) in the film machine direction (YMD) of 6.5 GPa or more and a Young's modulus in the width direction (YTD) of 8.2 to 9.8 GPa and is used as a base film for magnetic recording tapes of linear recording system, and a magnetic recording tape of linear recording system comprising the same as a base film. There are provided a biaxially oriented polyester film which has excellent dimensional stability, especially dimensional stability in the width direction and is suitable for use as a base film for magnetic recording tapes of linear recording system and a magnetic recording tape comprising the same.
A biaxially oriented polyester film which has a Young's modulus in the film machine direction (YMD) of 6.5 GPa or more and a Young's modulus in the width direction (YTD) of 8.2 to 9.8 GPa and is used as a base film for magnetic recording tapes of linear recording system.
A magnetic recording tape of linear recording system comprising a biaxially oriented polyester film having a Young's modulus in the film machine direction (TMD) of 6.5 GPa or more and a Young's modulus in the width direction (YTD) of 8.2 to 9.8 GPa and a non-magnetic layer and a magnetic layer formed on one side of the film and a back coat layer formed on the other side.
Dependencies are inferred from the claim text.