The Airbus A320 printer prints reports from the following systems (if installed) : ACARS, AIDS, FMGC, CFDIU and EVMU. It prints these on paper, and does so either on the ground or in flight. The printer is installed at the rear of the pedestal on the right side, in the cockpit.
SLEW sw : The SLEW switch is used to feed paper after having loaded a new roll.
PRINTER DOOR LATCH : The printer door latch locks the door used for loading paper.