| 摘要 |
PROBLEM TO BE SOLVED: To provide a good electromagnetic conversion characteristic in linear recording by moving a magnetic tape using a cobalt obliquely deposited film having a thickness equal to half or lower of a recording head gap length in both directions with respect to the recording head and then performing recording. SOLUTION: A cobalt obliquely deposited film having a thickness equal to 1/2 or lower of a recording head gap length is used. Thus, by setting the length equal to half or lower, signal interference is prevented in a depth direction, and a recording characteristic is thereby improved in a reverse direction. An output difference is very small between the forward and backward directions, recording currents are similar, and thus interference with high-density recording is prevented. Also, by using an MR element as a reproducing head, especially the MR element having a large output improving effect in a long wavelength side of a slow relative speed, the specified disadvantage is eliminated. Further, a recording head gap length is set equal to 0.25 micron or lower. Thus, a large demagnetizing effect, and the deterioration of an electromagnetic conversion characteristic in the reverse direction, which occur when the recording head gap length is long, are prevented.
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