Four paper height sensors [A] attached to the front of the right tray monitor the amount of paper that remains in the tray.
- As the actuator on the right support rod rises, it de-activates each sensor in turn to trigger 5 levels of paper remaining alerts on the operation panel.
- When the tray is full no sensors are de-activated (100%).
- The paper end sensor [B] indicates when the tray is out of paper after the last sheet feeds from the tray.