Epson EcoTank Pro M15180 Series User Manual page 193

Solving Problems
The print head position is out of alignment.
Solutions
Align the print head using the Print Quality Adjustment feature.
"Adjusting the Print Quality" on page 114
&
Vertical Banding or Misalignment
The following causes can be considered.
The print head position is out of alignment.
Solutions
Align the print head using the Print Quality Adjustment feature.
"Adjusting the Print Quality" on page 114
&
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.
Striped Patterns Appear
>
Printing, Copying, and Scanning Quality is Poor
>
Print Quality is Poor
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