Zebra Technologies R-140 - Manual (Page 91)

Print Quality Problems
General Print Quality Issues
Gray lines on blank labels with no consistent pattern
Light, consistent vertical lines running through all of the labels
Intermittent creases on the left and right edges of the labels
82 Zebra R-140 User’s Guide
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 the incorrect print
speed.
For optimal print quality, set the print speed to the
lowest possible setting via ZPL II, the driver, or the
software.
The printer is set at the incorrect
darkness level.
For optimal print quality, set the darkness to the lowest
possible setting via the front panel, the driver, or the
software.
The printhead is dirty.
Clean the printhead according to the instructions on
page 70.
There is light printing (or no printing) on
the left or right side of the label or the
printed image is not sharp.
The toggle pressure needs to be adjusted. Follow the
printhead pressure adjustment instructions on
page 77.
Problem Solution
The printhead is dirty.
Clean the printhead according to the instructions on
page 70.
Problem Solution
The printhead or platen roller is dirty.
Clean the printhead, platen roller, or both according to
the instructions on page 70.
Problem Solution
There is too much toggle pressure on
the printhead.
Reduce the toggle pressure. Refer to the printhead
pressure adjustment on page 77.