Ricoh Aficio SP C311N Information page 78

Paper and Other Media
F
Pinch the front end paper guide and slide it inward to match the legal paper
size.
5
G
Load the new paper stack print side up.
Make sure paper is not stacked higher than the upper limit (upper line)
marked inside the tray.
Slide the guides inward until they are flush against the paper's sides.
52
ASI094S
ASI105S
ASI095S