JPS57210421A - Magnetic head and its manufacture - Google Patents

Abstract

PURPOSE:To reduce variance in gap depth by embedding in notch parts metal which has a higher fusion point than metallic solder used for joining apex parts, and equalizing the gap depth of the notch parts to that of core parts. CONSTITUTION:In a core block half body 15, plural notches 16 are made in such a way that the size 17 of the remaining parts is as great as track width. Each notch part 16 is charged with nonmagnetic metal, whose fusion point is higher than that of metal for connection. Then, a groove 20 for a coil winding window is formed in the half body 15 and front and back gap formation surfaces 21 and 22 are worked into sepcular surfaces. On the formation surface 21, a gap spacer film of SiO2, etc., is formed and on the formation surface 22, a metallic solder film for the connection is formed. Two half bodies are abutted against each other; apex parts are connected by the fused part 23 of rodlike metallic solder inserted into a coil window, and the back gap formation surfaces are connected by fusing the metallic solder film. Then, this bar is sliced at the notch parts as shown in the diagram by 24 and cut into head cores.