105SL Printhead Pressure Adjustment

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Adjusting the Printhead Pressure on your Zebra 105SL Printer

If positioning the toggles the toggles properly does not solve a print problem on your Zebra 105SL printer, try adjusting the printhead pressure. Maximize printhead life by using the lowest pressure that produces the desired print quality.

Note Before adjusting printhead pressure, check that the toggles are positioned correctly.

Printhead life and drive system life (belts and bearings) can be maximized by using the lowest pressure that produces the desired print quality without allowing the ribbon or media to slip. You may need to adjust the prinhead pressure on your Zebra 105SL in the following instances.

  • If there is noticeable bleed or swelling in the printed image (too much pressure).
  • If there are voids (too little pressure).
  • If the darkness setting (burn duration) is set properly but printing is too light (too little pressure).
  • If the ribbon slips (too little pressure).

To adjust printhead pressure, complete these steps:

  • As needed throughout this procedure use the Pause Self Test (Press and hold PAUSE while turning on the printer) to print test labels.
  • Loosen the locking nut on the toggle assemblies.

  • Move the adjusting nut until the print quality is acceptable. Use the losest pressure that provides the desired print quality.
    • To increase printhead pressure, move the adjusting nut downward.
    • To decrease printhead pressure, move the adjusting not upward.
  • To lock the toggle pressure, tighten the locking nut against the adjusting nut.


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