Printronix t8000 Administrator's Manual page 253

Table 12. Printer Problems and Solutions
Symptom
Smears or voids in printed
image.
Solution/Explanation
1. Clean the printhead.
2. Make sure the printhead temperature (Print Intensity) is
not too high. Change the Print Intensity value in the
Media > Image section.
3. Verify that the printhead pressure blocks are positioned
correctly to match the media width installed. (See
Printhead Pressure Block Adjustments page 34.)
4. Make sure the printhead pressure dial is set properly for
the media thickness installed.
5. Skin oils can adhere to the surface of label stock, causing
fingerprints which inhibit thermal transfer. Wipe label stock
with a cloth, or remove a few feet of labels to expose a
clean area. Handle labels by the edges.
6. Check that the media has not been mishandled before or
during installation in the printer. Soiled media or media
with fingerprints will prevent proper ribbon transfer.
7. Check that media has not been installed inside out.
Surfaces on both sides may look identical but can produce
big differences in print quality.
8. Make sure the correct ribbon and media combination are
being used. Use the correct ribbon type.
9. Check the ribbon for creases or folds across its surface.
Smooth out the ribbon to remove any creases.
10. Reduce the Print Speed value through the Media > Speed
section, or via host software.
11. If using ribbon (Transfer Print mode), do not use direct
thermal media.
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