Troubleshooting
Print Quality Problems
Z4Mplus and Z6Mplus User Guide 103
Print Quality Problems
General print quality issues
Gray lines on blank labels with no consistent pattern
Light, consistent vertical lines running through all labels
Problem Solution
You are using an incorrect
media and ribbon combination
for your application.
Consult your authorized Zebra reseller/
distributor for information and advice.
The printer is set at an excessive
print speed to achieve optimal
quality.
For optimal print quality, set the print
speed to a lower setting via ZPL II, the
driver, software, or front panel.
The printer is set at an excessive
darkness level to achieve
optimal quality.
For optimal print quality, set the darkness
level to a lower setting via the front panel,
the driver, or the software.
The printhead is dirty. Clean the printhead according to the
instructions on page 87.
There is light printing (or no
printing) on the left or right side
of the label or the printed image
is not sharp.
The pressure adjustment dials need to be
adjusted. Follow the printhead pressure
adjustment instructions on page 17.
Problem Solution
The printhead is dirty. Clean the printhead according to the
instructions on page 87.
Problem Solution
The printhead or platen roller is
dirty.
Clean the printhead, platen roller, or both
according to the instructions on page 87.
