| 摘要 |
PURPOSE:To obtain a copy of invariably high stable picture quality by driving and controlling an air discharging fan according to the humidity outside an image forming device so that the temperature in a machine is a specific temperature higher. CONSTITUTION:The air discharging device of a copying machine C consists of an air discharging fan 21, an air discharging fan controller 22 which drives and contropls the air discharging fan 21, in-machine temperature sensors 30 and 31 which detect the temperature in the copying machine C, an ambient temperature sensor 32 which detects the temperature outside the copying machine C, and a humidity sensor 33 which detects the humidity outside the machine. The air discharging fan 21 is driven and controlled according to the humidity outside the copying machine C so that the temperature in the copying mechine C is higher than a specific temperature. |
