Epson ET-4810 Series User Manual page 160

Solving Problems
Blurry Prints, Vertical Banding, or Misalignment
The following causes can be considered. Check the causes and follow the solutions in order from the top.
The print head position is out of alignment.
Solutions
Select the Maintenance > Print Head Alignment > Vertical Alignment menu on the control panel to
align the print head.
The bidirectional printing setting is enabled.
Solutions
If print quality does not improve even after aligning the print head, disable the bidirectional setting.
During bidirectional (or high speed) printing, the print head prints while moving in both directions, and
vertical lines may be misaligned. Disabling this setting may slow down printing speed but improve print
quality.
❏ Windows
Clear Bidirectional Printing on the printer driver's More Options tab.
❏ Mac OS
Select System Preferences from the Apple menu > Printers & Scanners (or Print & Scan, Print &
Fax), and then select the printer. Click Options & Supplies > Options (or Driver). Select Off as the
Bidirectional Printing setting.
Printout Comes Out as a Blank Sheet
The print head nozzles may be clogged.
Solutions
Perform the nozzle check, and then try Power Cleaning if the print head nozzles are clogged.
"Checking and Cleaning the Print Head" on page 104
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Printing, Copying, Scanning, and Faxing Quality is Poor
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Print Quality is Poor