L: Printhead Maintenance
General Printhead Information
P1061317-002 Zebra ZXP Series 3 Card Printer Service Manual 345
Excessive Ribbon Residue Build-up
Description
The photo below shows a printhead contaminated with ribbon ink residue.
Normally the ink is cleaned off with the recommended cleaning solution; however, some
resins are fairly stubborn to remove. The ink residue builds up, then covers the print elements,
blocking the heat and causing voids in the print.
Cause
A build-up of ribbon ink residue is normally caused by a poor quality backcoating on the
ribbon, pulling the ink off when the ribbon is wound. The ink is then deposited onto the head,
and the ribbon contains voids where the ink has been removed.
Prevention
Ribbon ink residue can be eliminated by taking some general precautions detailed below:
• Always use good quality supplies.
• Clean the printhead every 5,000 panels or when print anomalies persist.
• Keep the printer’s door closed; this will help prevent contaminates entering the print
mechanism.