| 摘要 |
PURPOSE:To prevent false fare computation by stopping copying when a key counter is removed. CONSTITUTION:When a key counter CNT 1 is removed prior to turning-on of a copying key, the electric power source to other counters CNTs 2-4 supplied through the counter CNT 1 is turned off and therefore a key counter presence or absence CCNTi goes to the L level, and the removal of the counter is inputted to a control circuit which prohibits the acceptance of the copying key. The electric power source is supplied to paper feed solenoids SL1, SL2, of pickup rollers in the upper and lower steps through the counter. Therefore, when the key counter is removed after the copying cycle has been started by turning the copying key on, the movement of the paper feed solenoids is stopped and normal paper feeding cannot be made. Namely, normal copying cannot be accomplished despite the false use of the key counter. |
