Printronix L5000 Series Maintenance Manual page 293

Fan fold paper output from the swingers is folded at the perforation by the assisting
arms responding to the actions of the swingers (not activated when the head and tail
length of the sheet is 7 x 8.5 inches). Paper is accumulated on the elevator table while
being pressed by the transfer belts. The elevator table lowers to keep the height of the
paper uniform as it accumulates.
Optional Power Paper Stacker E–11