| 摘要 |
<p>PURPOSE:To obtain a grid circuit with arbitrary size and capacity by forming a screw groove on a synthetic resin plate wound on a rotary cylinder being central-supported on a lathe, etc., winding and fixing a conductor wire in the parallel groove, and cutting it into a prescribed area. CONSTITUTION:A rotary drum 23 is supported rotatably between the headstock 24 and the tailstock 25 of the lathe by centers 26 and 27. A polyester film 4 is wound adhesively on the outer periphery of the drum 23, and also, it is engaged with the drum loadably/unloadably. A cutting tool 28 is screw-fed by the rotation of the motor 31 of a feed screw 30 being screwed on a tool post 29. Thus, V-shape parallel grooves 5 are engraved on the surface of the film 4 at a prescribed pitch. The conductor wire 6 is drawn out from a copper wire 32 wound in spiral shape, and after being soaked in a bonding agent bath 33, is fixed on one end of the parallel groove 5, and is wound on the parallel groove 5 by turning the drum 5 in a forward or a backward axis, then, it is joined and adhered. Next, the film 4 on which the conductor wire 6 is adhered is removed from the drum 23, and is cut into the prescribed area, thereby, the grid circuit for digitizer can be obtained.</p> |
