| 摘要 |
PURPOSE:To easily obtain an excellent magnetic head having no influences of bonding agents in a short time, by installing thin glass plates or glass layers to the gap part of cores made of a metallic magnetic material and by directly uniting the glass plates and the cores with each other without using any bonding agents. CONSTITUTION:Cores 2 and 2 made of a metallic magnetic material, such as permalloy, sendust, etc., and thin glass plates 5 and 5 are directly united with each other in such a way that the glass plates 5 and 5 are put between the cores 2 and 2 and an electric current is passed through them by using the cores 2 and 2 as anodes and by connecting the glass plates 6 and 6 to a cathode of a power source while they are heated by a heater or in a furnace. It is also possible that a glass layer of SiO2, etc., is vacuum evaporated on the gap forming surface of the cores 2 and 2 instead of the thin glass plates, and then, both the cores are united with each other by the above mentioned anodic bonding method. In this way a magnetic head is manufactured without using any resin-made bonding agents, and thus, problems of adhesion of resin together with magnetic powder on tape, etc., and deformation of the gap part are eliminated. |
