| 摘要 |
PURPOSE:To facilitate an easy production and to have easily an azimuth for a magnetic head, by forming a closed magnetic path circuit of a magnetic metallic thin film having a front gap part on a monolithic substrate containing a through hole at its center part. CONSTITUTION:The substrate 2 of a magnetic head is monolithic itself and contains a through hole 21 for winding at the center part. The thickness of the substrae 2 is reduced at the areas between the hole 21 and recess parts 28 and 29 respectively in comparison with other areas. Thus, the output is improved and the noises generated from an external system are reduced. A closed magnetic path circuit 3 of a magnetic thin metallic film 3 is formed on the substrate 2. The film 3 is coated evenly over the substrate 2 so as to form a front gap part 4 at the front part of the substrate from the ridgeline of the front edge surface through the hole 21. The direction 1 of the edge surface of a thin film forming the gap part 4 is tilted by a prescribed angle alpha to the normal line direction (n) on the rear side of the thin film forming surface of the substrate 2. Thus an azimuth is given to the part 4. For this purpose, the part 4 is formed by using a parallel flat plate for the substrate 2 and then grinding the substrate 2 in the direction having an inclination alpha. |
