Lexmark C3326
From the control panel, navigate to:
Settings > Paper > Tray Configuration > Paper Size/Type > select a paper source
For non-touch-screen printer models, press to navigate through the settings.
Set the paper size and type.
Do you experience recurring paper jams? Load paper properly and check if the printer detects the correct paper size.
Adjusting the paper guides and specifying the paper type and weight can prevent paper from curling after it is printed on.