Use the Z-fold support tray for multi-folding unit.
This will reduce the angle of stacked bundles and prevent bundles flipping over as they are delivered.
For details about attaching the Z-fold support tray for multi-folding unit, see "Preparation" supplied with the machine.
Attaching the Z-fold support tray for the multi-folding unit cannot prevent folded paper such as letter- and gate-folded paper from being turned over when it is delivered to the output tray.