| 摘要 |
PURPOSE:To improve the stabilize head characteristics, by joining a metallic magnetic material directly to ferrite to reduce the variance in the dimensional accuracy between heads and characteristics. CONSTITUTION:A metallic magnetic material 34 is formed on the upper face of a large block 30, which should be the face facing a gap, by the sputtering method. The upper face of the large block is ground to remove the excess metallic magnetic material while leaving a metallic magnetic material 35 buried in a groove part 33 as it is. Grooves 37 are provided on both side parts of the metallic magnetic material left in the groove of a compound large block 36. Notched grooves 40 and 41 are provided in tip parts of worked small block pieces 38 and 39 (on the side of a head core facing a recording medium). Small block pieces 38 and 39 are so arranged that metallic magnetic material parts are matched to each other with a high precision, and a junction material 43 such as a glass is packed in the hole in the core front part formed by notched grooves, and core half bodies are joined to form a core block 42. The block is cut along dotted lines B and B' in the packed material part to take out many head cores. Thereafter, the face of the core facing the recording medium is finished to a prescribed gap depth and a prescribed front shape. |
