Ricoh Aficio MP1812L Operating Instructions Manual page 81

H
Square the paper and place it in the tray.
Be sure to set the paper under the roller.
Do not stack paper over the limit mark.
I
While pressing the release lever, adjust the side and end fences to the new
paper size.
J
Press down the lock button.
ASB003S
ZENY320E
ASB019S
Changing the Paper Size
6
75