| 摘要 |
PURPOSE:To obtain good recording and reproducing characteristics for a high Hc tape such as metallic tape by making the length of an alloy magnetic material in the gap depth direction from a head surface to be shorter than the bottom end of a winding window and shorter than the length of notched grooves. CONSTITUTION:A head gap 25 is formed by depositing the alloy magnetic materials 23, 24 such as amorphous materials having a high saturation flux density on the surfaces of magnetic cores 21, 22 consisting of an Mn-Zn ferrite material facing the head gap 25 by a sputtering method or the like and a thin layer of a nonmagnetic material such as glass between the alloy magnetic materials 23 and 24 to a prescribed thickness. The notched grooves 26 are provided to both ends of the gap 25 to determine the track width of the head and a joint member 27 for joining the right and left magnetic cores is packed in the grooves 26. The amorphous magnetic materials 23, 24 are provided only on both sides of the head gap 25 and are not provided on the part of the rear gap 25'.
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