Zebra Technologies Z4Mplus User Manual
Page 127
119
Troubleshooting
Print Quality Problems
1/18/06
Z4Mplus/Z6Mplus User Guide
13163L-001 Rev. A
Fine, angular gray
lines on blank labels
Wrinkled ribbon.
See wrinkled ribbon causes and solutions in this
table.
Printing too light or
too dark over the
entire label
Media or ribbon is not designed
for high-speed operation.
Replace supplies with those recommended for
high-speed operation.
You are using an incorrect
combination of labels and
ribbon for your application.
1.
Switch to a different type of media or ribbon
to try to find a compatible combination.
2.
If necessary, consult your authorized Zebra
reseller or distributor for information and
advice.
You are using ribbon with
direct thermal media.
Direct thermal media does not require ribbon. To
check if you are using direct thermal media,
perform the label scratch test in
.
If you are using ribbon intentionally with direct
thermal media, increase the darkness level, but
note that high darkness levels may decrease
printhead life. You may wish to perform the
to determine the
ideal darkness setting.
Incorrect or uneven printhead
pressure.
Set the pressure to the minimum needed. See
Adjust Printhead Pressure on page 63
Smudge marks on
labels
Media or ribbon is not designed
for high-speed operation.
Replace supplies with those recommended for
high-speed operation.
Misregistration/skips
labels
The printer is not calibrated.
Recalibrate the printer.
Media sensor is not positioned
correctly.
Perform media sensor position adjustment.
Improper label format.
Use correct label format.
Misregistration and
misprint of one to
three labels
The platen roller is dirty.
See
Clean the Printhead and Platen Roller
.
Media sensor is not positioned
correctly.
Place media sensor in proper position.
Media does not meet
specifications.
Use media that meets specifications.
Table 13 • Print Quality Problems (Continued)
Problem
Possible Cause
Recommended Solution