| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhauster for imaging formation device which can exactly grasp the exchange timing of a filter without causing a vast increase in the cost of a device, and which can prevent such situation from occurring that a filter is exchanged even when the filter has enough margin for its capacity, or on the contrary, that a filter is not exchanged even when the original exchange timing of the filter has already passed. <P>SOLUTION: This exhauster for an imaging formation device has a rotating condition detection means for detecting a parameter caused by a rotation condition of a blower means; an exchange recognition means for recognizing the exchange of a dust filter; and a judging means for judging the exchange timing of a new dust filter which is recognized by the exchange recognition means, based on a parameter caused by a rotation condition of the blower means which is detected by the rotating condition detection means. <P>COPYRIGHT: (C)2004,JPO |
