| 摘要 |
PROBLEM TO BE SOLVED: To secure the maintenance of parts whose heat resistant temperature is low even when a heating part is stopped in a heat accumulated state by enabling a cooling means driven with the driving means of an image forming device to act cooling action even after the driving means is stopped. SOLUTION: A one-way clutch is incorporated in the fixed part of the blade of an auxiliary cooling fan 21. As for the one-way clutch; a direction where the rotational force of a gear 21b and a driving shaft 21a transmitted through a gear train 22 from a driving motor 18 interlockingly driven to be rotated at the time of operating a device main body 1 is transmitted to the fan 21 is a driving force transmitting direction. The rotating direction when the fan 21 is rotated by the intertial force of the fan 21 own when the motor 18 is stopped with the stop of the operation of the main body 1 and the gear 21b and the driving shaft 21a meshed with the gear train 22 are stopped is set as a driving non-transmitting direction. Even when the operation of each part of the main body 1 is stopped and a cooling fan 19 and the motor 18 are stopped, the fan 21 continues idle rotation by the action of the one-way cluth so as to continue cooling action. |
