| 摘要 |
PURPOSE:To realize an increase of a handling power amount, compactness of an entire shape and semipermanent quality by enlarging a thickness of an electric conductor by melting metallic powder mounted on a heat resistant insulating substrate through laser irradiation and by burning and attaching a solid conductor thereto. CONSTITUTION:Required electric good conductor power 2a is scattered and mounted on a heat resistant electric insulating board 1a such as ceramic and is formed to a layer. When laser beam 3a is concentrically irradiated to draw an electric circuit 4b from above the metallic powder 2a, the metallic powder 2a is heated to a high temperature by the laser beam 3a and molten. When deposit of copper powder 2a in an extra circuit part is removed, an electric circuit 4b is burnt and produced on the substrate 1a such as ceramic. Thereby, it is possible to freely set a size of a thickness and a width of a lead wire part 4a of the electric circuit 4b and to make a high current flow. It is also possible to manufacture the electric circuit 4b of a semipermanent long life. |
