| 摘要 |
PURPOSE:To form an excellent image even under hard environment in terms of temperature and humidity by adding the warm air of a heat fixing part to the cool air outside a device so as to take for the mixed air at a required temperature and passing said air through the inside of a photosensitive body so as to control temperature. CONSTITUTION:The warm air 10 from the heat fixing part 3 in an enclosure 1 is added to the cool air 11 outside the device to take for the mixed air at the prescribed temperature. At this time, the temperature of the mixed air is controlled by adjusting a blower valve 6 through a temperature control part 15 with the aid of the detecting signal of a photosensitive body temperature sensor 14. The mixed air is discharged outside through the inside of the photosensitive body 2 by a blowing fan 7 and a discharging fan 9, thereby controlling the temperature of the photosensitive body 2. Thus the temperature and humidity of the photosensitive body 2 can be within the prescribed range, 20-50 deg.C, for instance, even under a severe environment such as the low temperature or high humidity, an excellent image can be formed. |
