344 Zebra ZXP Series 3 Card Printer Service Manual P1061317-002
L: Printhead Maintenance
General Printhead Information
Scratched Printhead Elements
Description
The above photo shows scratches through the elements of a printhead.
The scratch can be clearly seen as a thin line leading to the elements. The elements are
higher than the leads and have been torn away showing the white substrate (circled above)
underneath. Scratches will interrupt the electrical contact to the element as well as destroy
the element itself.
Cause
Scratches are caused by foreign particles (dirt, dust, grit, etc.) hitting the element line. These
particles can come from the ribbon, media, or environment. The particles that cause these
scratches tend to be extremely hard and very small. The particle that caused the above damage
was approximately 0.05mm in diameter.
Prevention
Scratches can be eliminated by taking some general precautions detailed below:
• Always use good quality supplies.
• Never place media or ribbon on the floor or other dirty surface. Always unwrap cards and
rolls of ribbon, and put them straight in the printer.
• Clean the printhead every 5,000 panels or when print anomalies persist.
• Keep the printer’s door closed; this will help prevent contaminates from entering the
print mechanism.
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General
Weight and Dimensions
