| 摘要 |
PURPOSE:To execute each control easily, by switching the amplitude and polarity of a reference voltage of a scanner driving motor in a suitable timing, in a scanner driving controller scanning and reading an original picture. CONSTITUTION:While the number of pulse signals given with the running of a scanner is counted at a counter 24, a motor 21 is gadually accelerated in accordance with the contents of count and it is made to a constant speed until the beginning end of an original, and the motor is effectively decelerated before the turning position and the home position, allowing to start, return and stop the scanner without any shock. |
