Lexmark C2325
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.
Guide for Setting Up Universal Print in Lexmark Universal Print Ready Printers
Adjusting the paper guides and specifying the paper type can prevent paper from curling after it is printed on.