| 摘要 |
PROBLEM TO BE SOLVED: To pertinently notice the replacement timing of a toner collection container by alarming the change thereof when a toner supply switch is operated with the accumulated drive period of a toner supply part in excess of the preset value. SOLUTION: Toner 1 is carried from a toner feed port 3 to a toner hopper 4 on the operation of a toner supply drive part 5. This toner supply drive part 5 is actuated by pressing a toner supply switch 6. Unnecessary toner residual on a photosensitive member drum 12 is scraped off with a cleaning brush 16 and drawn via a blower 17 for collection into a toner collection container 18. When the toner supply switch 6 is pressed in a condition after a time counted with a toner supply accumulated time counter to monitor the accumulated drive time of the toner supply drive part 5 reaches the preset value, a toner collection container replacement signal turns to a high level for alarming the replacement of the toner collection container 18. |
