| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toner detector, a toner supply device, and an image forming device which suppress toner sticking all the time without cleaning a detection face and satisfactorily detect whether a toner exists or not for a long period of time. <P>SOLUTION: A sensor detection part formed with a glass tube 640 is provided, and it is detected by an optical sensor whether a toner exists in the sensor detection part or not. <P>COPYRIGHT: (C)2004,JPO |
