Epson WF-M21000 Series User Manual page 291

Solving Problems
Paper is not sealed.
Solutions
Keep paper that you opened once sealed in a plastic bag.
The print head is rubbing the surface of the paper.
Solutions
When printing on thick paper, the print head is close to the printing surface and the paper may be
scuffed. In this case, enable the reduce scuff setting. If you enable this setting, print quality may decline or
printing may slow down.
Control panel
Select Settings > General Settings > Printer Settings, and then enable Thick Paper. See the printer's
LCD screen for the setting options.
Print density is set to high.
Solutions
If paper is still smeared after enabling Thick Paper, reduce the print density.
The back of the paper was printed before the side that had already been printed was dry.
Solutions
When performing manual 2-sided printing, make sure that the ink is completely dry before reloading the
paper.
When printing using automatic 2-sided printing, the print density is too high and the drying
time is too short.
Solutions
When using the automatic 2-sided printing feature and printing high density data such as images and
graphs, set the print density to lower and the drying time to longer.
"Printing on 2-Sides" on page 56
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"Printing on 2-Sides" on page 83
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The Position, Size, or Margins of the Printout Are Incorrect
The following causes can be considered.
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Printing, Copying, Scanning, and Faxing Quality is Poor
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Print Quality is Poor