To ensure that the top of the used toner in the bottle remains flat, the toner is dispersed evenly from rear to front. There is one switch and two sensors in the used toner bottle.
- Used toner bottle set switch. The used toner bottle set switch [A] (a micro-switch) detects whether the bottle is set correctly or not.
- Near-full sensor. The near-full sensor [B] detects when the used toner bottle is almost full and displays an alert on the operation panel so the operator can make preparation to replace the bottle. After the alert is issued, the machine can continue to be used for 290 K prints (A4 SEF 8% coverage).
- Full sensor. The full sensor [C] detects when the used toner bottle comes full. Once the machine detects the full condition and issues the alert, the machine stops and cannot be used until the used toner bottle has been replaced.