| 摘要 |
PURPOSE:To prevent copy density from varying by disabling operation input during copying operation in manual exposure mode, and holding the quantity of exposure set before the start of the copying operation and scanning an original. CONSTITUTION:There is a mode changeover switch 2 for selecting the exposure adjustment of automatic AE or manual ME on a panel 1. In manual exposure adjustment mode, a manual operation key 6 is operated to adjust the quantity of exposure manually and then a copy switch is operated to start the copying operation, but the operation of the manual operation key 6 is invalidated during this copying operation, so the quantity of exposure set before the copying operation by operating the manual operation key 6 is fixed. The fixation of the quantity of exposure is maintained until the copying operation is finished, and then the operation of the manual operation key 6 is made effective. Consequently, the quantity of exposure set manually in advance is fixed during the copying operation and the coy density never varies in the middle. |
