L: Printhead Maintenance
Printhead Terminology
P1061317-002 Zebra ZXP Series 3 Card Printer Service Manual 349
Table 2 • Contamination
Media can contain or be introduced to abrasive contaminants that pass through the printhead and scrape or
cut through the protective coating on the printhead. Once the protective element coating is damaged,
printhead element failure occurs. If premature or random printhead failure occurs as a result of a scratched
printhead element, the media or environment may be introducing contamination.
Contributing Factor Recommendation
Contaminated Media Consult with your media supplier.
Environment Protect the media from exposure to contamination.
If printer location is problematic, consider using a
protective enclosure.
Table 3 • Corrosion
Substances in contact with the printhead elements can become corrosive and can generate caustic agents
when heated, causing corrosion of the protective coating and printhead failure.
Contributing Factor Recommendation
Physically touching the printhead element surface
with the human skin can cause contamination
detrimental to the life of the printhead.
Clean any surface with an approved cleaning solution
before operating the printer. Consult your printer’s
User Manual for recommended cleaning procedures.
Improper cleaning or use of unapproved solutions on
the printhead.
Use only approved cleaning items for printhead
cleaning; see See “Cleaning Supplies” on page 354.
Table 4 • Electrostatic Discharge (ESD)
Electrostatic discharge can damage the internal electronic circuitry.
Contributing Factor Recommendation
Improper handling of the printhead assembly Refer to your printer’s user guide for more
information about how to prevent ESD when
handling the printhead.
Static buildup from media/ribbon Ensure that any static brushes (if applicable) and
printhead mechanism wiring are properly secured.
Table 5 • Residue
Buildup of ribbon coating or direct thermal media coatings on the printhead elements can interfere with heat
transfer, causing the heater elements to overheat to the point of failure
Contributing Factor Recommendation
Improper maintenance Follow recommended cleaning intervals using the
proper cleaning accessories.