| 摘要 |
PURPOSE:To arrange precisely plural gaps on a straight line and to improve mass-productivity by allowing the production of magnetic heads to include a process cutting off a block into which shielding plates are inserted so that magnetic substance pieces are arranged on both the sides of each shielding plate. CONSTITUTION:A part or the whole of a window part 10 formed on a magnetic substance piece 8 is filled with a bonding agent 11 such as glass, silver solder, or organic adhesives to adhere the magnetic substance pieces 7, 8. Cut grooves 12 are formed perpendicularly to a gap spacer and the shielding plates 13 having the same width as the cut grooves 12 are inserted and adhered into/to the block. For the material of the magnetic shielding plates 13, a nonmagnetic material with low resistivity such as Cu and Cu alloy is used. Subsequently, the block is cut off. Parts 14a, 15a are the head gaps of main cores 14, 15 respectively. After cutting off the block, finish lapping of the sides 16 of the main cores 14, 15 is performed and then the lower parts of the cut parts are separated again. Finally, recessed auxiliary cores 17, 18 around which windings 19, 20 have been already wound are adhered to the main cores 14, 15 from both the sides of the main cores 14, 15. |
