Base film of digital compact cassette tape
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United States of America Patent
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May 30, 1995
Grant Date -
N/A
app pub date -
Jan 14, 1993
filing date -
Jan 16, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A base film of a digital compact cassette tape comprising at least two layers consisting of laminated biaxially oriented polyester films, one surface of which has center line average roughness of 5 to 20 nm, and the other surface of which has center line average roughness of 15 to 45 nm, and which has a Young's modulus in a machine direction of at least 600 kg/mm.sup.2, which base film is excellent in running stability and electromagnetic conversion characteristics.
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