When printing on envelopes (with triangular flap) and ejecting them to Finisher SR5110 or Booklet Finisher SR5120, set the Z-fold support tray on the finisher shift tray.
For details about how to attach the Z-fold support tray, see When using the Z-fold function.
If you set [Finisher Output Tray Setting] to [Auto Change] and [Do not Stack Jobs], and change where to deliver the paper when the Z-fold support tray is attached, multiple jobs maybe delivered to and stacked on the same tray.
When the Z-fold support tray is attached, the stack of the output sheets may not be aligned as cleanly as when the support tray is not attached.