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White Line across printed card | Damaged Printhead Element

If printer cleaning is not carried out as advised the chance of printing problems and printhead damage is greatly increased.

Cleaning recommendations are:

  1. Carry out full cleaning at every dye film change.
  2. Including sticky roller replacement (blue sticky roller is supplied with every official Magicard Dye Film).
  3. Orange tacky roller must be present (lives below the blue roller).
  4. It is imperative that your cards are perfectly clean and free from any residues or dust particles before inserting into the printer.

Additional precautions as thermal printheads are very fragile:

– Handle unprinted cards with clean hands only.

– Do not try to clean a card if it was dropped by accident, just discard it.
– Remove jewelry before replacing the dye film or while handling a printhead.
– Pre punched cards can damage a printhead, hole-punch After printing.



I have a white line across the length of my printed cards


Dust or contamination from the cards, dye film or from inside an unclean printer can be dragged and forced between the printhead and the card permanently damaging the printhead surface and resulting in a white line across the printed cards length. This is where the head can no longer apply heat where the thermal element has been damaged.


Under these circumstances the complete Printhead will have to be replaced, it cannot be repaired.

Check your warranty terms for printhead cover on your specific printer model and region.

– If your printer is In Warranty and includes printhead replacement then please raise a support case from your Support Account.

– If your printers warranty has Expired or does not have printhead cover please contact your original printer supplier to purchase a replacement.


* If you are fitting a replacement printhead we advise to first perform a thorough clean of you printer:  please see our YouTube channel for cleaning your specific printer model.  It will not fix a damaged printhead element but it will protect against fitting an expensive new head into a dirty printer which risks the same damage to your new printhead!


Cleaning Videos

Find more printer models on our YouTube Channel.



Diagram to demonstrate what happens:


Some examples showing the white line across the printed card length

(printed with the internal test card to eliminate other possible causes)





Examples under the microscope showing the damaged thermal elements: