Epson WF-M21000 Series User Manual page 295

Solving Problems
Paper Is Smeared or Scuffed
The following causes can be considered.
Paper is loaded incorrectly.
Solutions
When horizontal banding (perpendicular to the printing direction) appears, or the top or bottom of the
paper is smeared, load paper in the correct direction and slide the edge guides to the edges of the paper.
"Loading Paper" on page 36
&
The paper path is smeared.
Solutions
When vertical banding (horizontal to the printing direction) appears, or the paper is smeared, clean the
paper path.
The paper is curled.
Solutions
Place the paper on a flat surface to check if it is curled. If it is, flatten it.
The printhead is rubbing the surface of the paper.
Solutions
When copying 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.
Select Settings > General Settings > Printer Settings, and then enable Thick Paper on the control panel.
If you enable this setting, copy quality may decline or may slow down.
The Position, Size, or Margins of the Copies are Incorrect
The following causes can be considered.
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Printing, Copying, Scanning, and Faxing Quality is Poor
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Copy Quality is Poor