| 摘要 |
PURPOSE:To prevent deterioration of the characteristic of a magnetic head by forming a core block, from which the core of the magnetic head is manufactured by slicing, in such a way that grooves are installed to a pair of metallic magnetic substance bodies and the bodies are put together through a spacer after they are heat-treated and glass is molded to the grooves, and then, the core block is formed by means of the softening of the glass remaining in the grooves. CONSTITUTION:Track width controlling grooves 11B and 12B, grooves 11C and 12C for reinforcing the glass in the rear section, and groove 11E for winding are installed to gap forming surfaces 11A and 12A of metallic magnetic substance bodies 11 and 12. After the metallic magnetic substance bodies 11 and 12 are subjected to heat treatment, glass 13 is molded to a fixed thickness and ground. Then the bodies 11 and 12 are put together with a spacer in between and they are welded to each other by means of the softening of the glass 13 remaining in the grooves. Thus a core block 15 is formed. The core block is sliced to manufacture cores. Since the magnetic bodies 11 and 12 are bonded to each other by the glass 13, corrosion and creepage of silver solder do not take place and no working deformation occurs at the time of heat treatment. Therefore, deterioration of the characteristic of the magnetic head can be prevented. |
