Epson EPL-5900L Reference Manual page 140

Missing areas on printed image
Cause
Your paper may be moist or
damp.
You may not be using the
correct type of paper for your
printer.
132
Troubleshooting
What to do
This printer is sensitive to moisture
absorbed by the paper. The higher the
moisture content in the paper, the
lighter the printed output. Do not
store paper in a humid or damp
environment.
If the surface of your paper is too
rough, printed characters may appear
distorted or broken. Smooth,
high-quality copier paper is
recommended for best results. See
"Paper" on page 138 for information
on choosing paper.