| 摘要 |
PURPOSE:To discharge heat efficiently outside a main body by providing a control part which opens a 1st opening and closing member while an exposing lamp is lit and blocks a 2nd opening and closing member. CONSTITUTION:While copying is awaited, the 1st opening and closing member 61 is blocked to disconnect a 1st flow channel. On the other hand, the 2nd opening and closing member 62 opens to communicate a 2nd flow channel. In this condition, an exhaust fan 1 is driven to discharge heat generating from a fixing device 33 outside the main body together with air flowing in the 2nd flow channel. While the exposing lamp 22 is lit after a copying operation is started, the 1st opening and closing member 61 opens to communicate the 1st flow channel. Simultaneously, the 2nd opening and closing member 62 is blocked to disconnect the 2nd flow channel. Thus, heat generating in the copying machine main body can be discharged efficiently. |
