Epson PowerRIP Stylus User Manual page 63

If you still have paper feeding problems, see the following:
The printer loads more than one sheet at a time.
Remove the stack of paper and fan it. Tap it on a flat surface to
even the edges. Then reload the paper.
The paper is too thin or thick. See Appendix B for exact
specifications.
Ejected paper is wrinkled.
The paper is too thin or damp. Do not store paper in damp or
humid places.
Single-sheet paper does not fully eject.
Use the Load/Eject button to eject the page.
The paper is too long. Use paper that is within the specified
size. See Appendix B for exact specifications.
Paper is feeding crooked.
The paper is old or creased. Use only new, smooth sheets of
paper.
Too much paper is loaded in the input tray. Remove a few
sheets.
The paper is not the proper size and quality. See Appendix B
for exact specifications.
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Maintenance and Troubleshooting