Datamax W-Class Maintenance Manual page 64

3 Does the print fade across the width
of the label?
 Try a different ribbon/media combination.
 Adjust the Heat, Print Speed and/or the Darkness
setting to a higher value.
Troubleshooting
 Incorrectly set Leveling Cam; see Section
3.2.1.
 Incorrectly set Heat value.
 Printhead may be out of alignment; see
Section 2.2.3.
 Worn platen roller.
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