Ricoh D131 Service Manual page 1504

Exit, Reverse, and Top Tray Junction Gates
These three junction gates are shown above at their default positions.
For straight-through paper feed the junction gates remain at their home positions. Paper
passes straight through the multi-folder to the next peripheral unit downstream.
All three junction gates operate to guide folded paper to the top tray:
Exit junction gate rotates left
Reverse junction gate raises
Top tray junction gate lowers
This sequence guides the folded paper to the top tray.
SM 111
Paper Path
D454/D615