| 摘要 |
<p>PURPOSE:To enable the simple and precise formation of a coiled body, particularly a coiled body as a minute electronic component, by forming a conductive film spirally on the surface layer of a core. CONSTITUTION:A coiled body 20 is shaped in a ring as a whole. It is formed by applying a film 22 of an insulating material as a coat on the surface layer of an iron core 21 shaped in a doughnut as a whole and by forming a spiral conductive film 23 on the surface layer of the film 22. The spiral conductive film 23 is formed in such a manner that a conductive layer is applied once as a coat on the entire surface layer of the film 22 and, in this state, a cut groove 25 is formed spirally in the direction B by means of a cutter 24 or the like. The formation of the cut groove 25 is conducted by cutting the conductive layer until the film 22 is exposed. As the result, a belt-shaped conductive film 23 having a width D is formed spirally and continuously on the surface of the film 22. The continuous conductive film 23 is cut in the state in which end portions 26A and 26B are formed, and thus the coiled body 20 is formed in the same state that a wire having a length L is wound round on the surface layer of the film 22.</p> |
