| 摘要 |
PROBLEM TO BE SOLVED: To quantitatively evaluate reproducing characteristics for reproducing a recorded track recorded azimuthally on a magnetic tape and to ensure reliability of the reproducing characteristics. SOLUTION: A head width Wh, which is parallel to a track width Wt of the magnetic tape 5, is formed wider than the track width Wt, and a magnetism sensing part of a magnetoresistive element is disposed with a prescribed azimuth angle. Prescribed characteristic values of a reproducing signal obtained from the magnetic tape 5, while a magnetoresistive effectiveness type magnetic head 12 is moved so as to be set off-track in the direction of a head width Wh to a recorded track T1 are specified to lie within prescribed values with respect to standard values within a head effective width We.
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