PURPOSE: To always perform smooth copying operation, by setting the timing pulse counter to a specified value when the scanner return switch is turned on as the scanner reaches the final position in the going way.
CONSTITUTION: In a copying machine 6 controlled by a microcomputer 1, is synchronism with the rotation of photosensitive drum 11, regular timing pulses are generated by a timing pulse generator composed of light emitting device and photo detector and slit disc 29. Such timing pulses are counted by CUP 1, and a control signal is issued every time the counting reaches a specified value, thereby performing sequence control. When a scanner 13 reaches the giong way final position and a scanner return switch SW1 operates, the timing pulse counting is set to a specified value, regardless of the counting at the that time. Therefore, even if error is caused in moving time due to unsmooth moving of the scanner 13 or other cause, a normal copying operation is always carried out.
SEKO NACHIO
OGURA MASAAKI
| JPS4712282A | ||||
| JPS5121085A | 1976-02-19 | |||
| JPS48104548A | 1973-12-27 |
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