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HP Designjet T120 and T520 ePrinter Series - How to Align the Printhead

Align the printhead

Precise printhead alignment is essential for achieving high print quality level.
Accurate colors, smooth color transitions, sharp edges in graphical elements, vertical lines straightness and other print quality parameters are greatly affected by printhead alignment.
Your printer has an automatic printhead alignment process which runs whenever a printhead has been accessed or replaced.
You also may need to run the printhead alignment after a paper jam or anytime you are experiencing print-quality problems.

How to launch the printhead alignment process

  1. Load the paper you wish to use, for more information check the Paper handling chapter on the page 31 of the User Guide. You can use a roll or a cut sheet; plain white paper is recommended.
      caution:
    Do not use transparent or semi-transparent paper to align the printhead.
  2. Ensure that the printer's window is closed, as a strong light source near the printer during printhead realignment can negatively affect the alignment.
  3. From the front panel, press , then Image Quality Maintenance > Align printhead.
    note:
    Printhead alignment can also be started from the Embedded Web Server (Tools > Print Quality Toolbox > Align Printhead), or from the HP Utility (Windows: Support > Printhead Alignment; Mac OS X: Information and Print Quality > Align).
  4. If the loaded paper is satisfactory, the printer runs the realignment and prints a realignment pattern.
  5. The process takes about five minutes. Wait until the front-panel display shows the process complete before using the printer.
If the printer cannot complete the printhead alignment successfully, you may be asked to clean the printhead and try again.

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