Lexmark C520 - Manual (Page 96)

Solving print quality problems
96
Troubleshooting
The media curls badly
once it prints and exits to
the standard bin. The Paper Weight setting is wrong
for the type of paper or specialty
media being used. Change the Paper Weight setting.
The media loaded in the source is
damp. Make sure the media loaded in the source is not damp.
Load media from a new package.
Symptom Cause Solution