Epson DFX-9000 - Manual (Page 150)

150 Options and Consumables
If you plan to load continuous paper from the rear tractor, be sure
to leave enough room around the printer for the attached
perforated paper output attachment and the output tray, and for
the stack of fresh paper. Make sure you align your paper supply
with the paper loaded in the tractor so the paper feeds smoothly
into the printer.
The following illustration shows a way to position your paper
with the rear tractor loaded.
Installing the perforation cutter
The steps below show you how to install the perforation cutter.
You will need a cross-head screwdriver.
Note:
If you plan to use the perforation cutter with the built-in rear tractor,
you need to load paper onto the rear tractor before you install the
perforation cutter. See “Loading Paper onto the Rear Tractor” on page
22 for instructions.