Samsung ML-2251NP - Manual (Page 33)

2.8 S ETTING U P Y OUR P RINTER
You can load previously printed paper. The printed side
should be facing up with an uncurled edge on top. If you
experience problems with paper feed, turn the paper
around.
Make sure that all four corners are flat in the tray.
N OTE : If you want to change the paper size in the tray, see
“Changing the Paper Size in the Paper Tray” on page 2.9.
4 Pay attention to the paper limit mark on the left inside wall
of the tray. Paper overloading may cause paper jams.
5 Slide the tray back into the printer.