| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic tape which has small dimensional change in a width direction in environmental change in temperature and humidity and during storage in a high temperature environment and therefore has reduced tracking error (off-track) in running on a small track width and which achieves high output and high reliability recording and reproduction and high recording density. SOLUTION: The magnetic tape includes a substantially nonmagnetic layer containing nonmagnetic powder and a binder and a magnetic layer obtained by dispersing ferromagnetic powder in a binder in this order on one surface of a nonmagnetic support, wherein the magnetic tape has a coefficient of temperature expansion ranging from 0 to 10×10<SP>-6</SP>/°C and a coefficient of humidity expansion ranging from 0 to 7×10<SP>-6</SP>/% RH each in a width direction of the magnetic tape, and the magnetic tape has a dimensional deformation amount ranging from 0.01 to 0.06% in the width direction in applying a tensile stress of 1N to the magnetic tape at 60°C for 50 hour in a longitudinal direction of the magnetic tape. COPYRIGHT: (C)2008,JPO&INPIT
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