Output expander paper path
output bin
sensor(bin full)
diverter
interface/main motor
diverter motor
sensor (pass through)
transport rollers
diverter plunger
exit roller
When the output expander is installed on top of the printer, the diverter plunger changes the position of the diverter
below it. Since the diverter position of the printer below is opened, the printed paper will be re-routed. Instead of
exiting the standard output bin, the media enters the output expander. The movement of the diverter plunger can be
controlled by its diverter motor, depending on the printer's commands.
Note: The diverter motor controls the diverter below it. Another way of saying it is that the diverter is controlled by
the diverter motor of the output option above it.
The main motor drives the transport rollers which move the media along the paper path. The sensor (pass through)
detects if the media has entered the expander. The diverter of the expander controls which way the media will go. If
the diverter is closed, then the media will exit into the output bin. If the diverter is opened, then media will pass through
the output expander and enter the output option above it.
Upon exit, the media is fed out by the exit rollers towards the output bin. The sensor (bin full) verifies if the media has
exited. The media level on the output bin is detected by the actuator flag. When the output bin is full, the actuator flag
triggers the sensor (bin full). A signal will be sent to the printer:
• to prompt the user to clear the output bin
• to change the direction of the paper path, re‑routing the media to the next output bin or output option above it
High capacity output expander theory
The function of the HCOE, which is to allow extra capacity to a printer's output bin, is similar to the output expander.
See “Output expander theory” on page 904. What differentiates the HCOE aside from its size, is its ability to adjust
the position of its output bin to accommodate more media.
4063
Appendix C: Theory of operation
905
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