| 摘要 |
PURPOSE:To secure the high-efficiency manufacture of the high-performance and multi-channel head by forming the gap width prescribing groove as well as part of the coil on one of the two magnetic blocks and the gap depth prescribing groove orthogonal to the gap groove to the other block and then unifying these two grooves together. CONSTITUTION:Gap width prescribing groove 12 is provided to magnetic block 11, and coil 13 is formed at groove 13 via insulated layer 14. While groove 16 opposing to groove 12 plus gap depth prescribing groove 17 orthogonal to groove 16 is formed to the other magnetic block 15. Then block faces 11a and 15a are matched to each other, and glass 19 is heat-welded via spacer 30 and so as to form gap length gL. Thus the both faces are unified together. After junction of auxiliary block 20, blocks 11 and 12 are ground to obtain face 21 with the edge of coil 13 exposed. After this, the coil part, conducting layer 25 and terminal part 26 are formed through the evaporation method or the like to complete the winding. Finally, reinforcing block 27 of the Zn ferrite or the like is adhered. In such way, multi-channel head 29 is manufactured in a highly efficient way. |
