| 摘要 |
PURPOSE:To obtain the insulating coated film of a fine pattern by a method wherein electrified glass powder is accumulated on the surface of a laminated body, which has been made of electrostrictive material and placed in a suspension, and unnecessary glass powder of the glass powder is removed by applying an electric field in between internal electrodes constituting the laminated body and an opposed electrode plate installed in the suspension. CONSTITUTION:A laminated body 21 constituted by laminating alternately internal electrodes and electrostrictive material is placed in an electrified glass powder-containing suspension 26. The internal electrodes are made to expose at the end surfaces of the laminated body 21. A temporary external electrode 22 and a temporary external electrode 23 are provided on both sides of the laminated body 21, and the temporary external electrodes 22 and 23 are made to connect with the internal electrodes every one layer. The laminated body 21 is left intact in the suspension 26, glass powder 24 is made to be accumulated on the surface of the laminated body 21 and a DC power source 27 is connected to the external electrode 23 and an opposed electrode plate 25. According to such a way, the glass powder 24 in the vicinities of the internal electrodes connected to the electrode 23 is removed. By baking the laminated body obtained in such a way, the insulating coated film of a fine pattern not only can be formed, but also the layer thickness thereof can be controlled. |
