TA Triumph-Adler LP 4140 - Manual (Page 27)

Handling Paper
ADVANCED OPERATION GUIDE 1-21
NOTE: Do not load more paper than will fit under the load limits on the
inside of the MP tray. If the paper is considerably curled in one direction,
for example, if the paper is already printed on one side, try to roll the
paper in the opposite direction to counteract the curl. Printed sheets will
then come out flat.
Correct
Incorrect