| 摘要 |
PURPOSE:To reduce the probability that a fruitless copy is produced by resetting picture density to reference density a specific time after the picture density is set. CONSTITUTION:When an SW1 is depressed, the output of a flip-flop 27 goes up to 1, only a relay K1 turns on, and a contact K1-1 is closed to set the amount exposure so that image density is low. A copy button when left as it is without being turned on to produce a specific number of copies; when a copy end signal END is inputted, a timer circuit 23 operates and the flip-flop 27 is reset a specific time to turn off the relay K1 while turning on a relay K3. Therefore, a contact K3-1 is closed and a standard exposure state is entered. When keys SW2-SW5 are depressed, exactly the same operations are performed and resetting to the standard exposure is performed a specific time later, so the operations are facilitated and errors of copying are reduced. |
