L: Printhead Maintenance
General Printhead Information
P1061317-002 Zebra ZXP Series 3 Card Printer Service Manual 347
Printhead Element with Excessive Backcoating Build-up
Description
The photo below shows an area of a printhead that has excessive ribbon backcoating build-up.
The build-up is highlighted by a silver/grey coating over the print elements. The coating
blocks the heat from the print elements and causes missed areas of print.
Cause
• All ribbons will deposit backcoating on the printhead. The ribbon backcoating allows the
ribbon to travel across the printhead elements with minimum friction at high temperatures.
As a result, backcoating is deposited on the printhead.
• Poor quality ribbons may have an inferior backcoating that is broken down at high
temperatures.
Prevention
To ensure the backcoating does not build up excessively causing poor print quality:
• Clean the printhead every 5,000 panels or when print anomalies persist.
• Always use good quality supplies.
• If possible, reduce the printhead pressure and head temperature.
To Next Page
Loading...
