| 摘要 |
PURPOSE: To prevent the rising of the temperature of an image forming device and the dropping of the temp. of a fixing part by making the discharge quantity during the image forming operation in a low temperature environment smaller than that after the formation of the image has completed and discharge quantity larger than that in a low temperature environment, even during the image forming operation in a high temperature environment. CONSTITUTION: For instance, in a low temperature environment where the measured value of a temperature sensor is a previously set prescribed temperature or below, the discharge quantity of a heat discharge fan during the image forming operation is made smaller. Thus, the very sudden dropping of the temperature in the fixing part which occurs in the low temperature environment is minimized and the discharge quantity after the image is formed is made large, so that the rising of the temp. in the device is minimized as well. Moreover, when the measured value of the temperature sensor is the previously set prescribed temp. or above and the high temperature environment is obtained, the discharge quantity of the heat discharge fan during the image forming operation is made large and the very sudden rising of the temp. in the device can be minimized in the high temperature environment. |
