| 摘要 |
PURPOSE:To enable constituting of a means, which generates a rotary synchronizing pulse, without driving of a rotary device, by a method wherein a paint, capable of reflecting or absorbing a light, is adhered to a rotary shaft, being under rotation, by means of a spraying gun. CONSTITUTION:A paint 6, reflecting or absorbing light, is adhered to a rotary shaft 4, being under rotation, by means of a spraying gun 7. In case the number of revolutions is, for example, 3,000rpm, the spraying rate of the paint 6 is adjusted so that the paint 6 suspends jetting in about 0.02sec. A reflection strength of the light of so sprayed paint 6 is fetched into an electric signal 8, and furthermore, a rotary synchronizing pulse 9 is generated. The position of the paint 6 located on a rotation circumference when the current rotary shaft 4 makes one complete turn, and a condition of a change in time of a light-detecting signal 8 and the rotation synchronous pulse 9 are illustrated in the Fig. |
