When you are unsure about the density of colors on your printed output, you can optimize the printhead performance. Perform a printhead calibration when you want to optimize colors.
You can only perform printhead calibration when you print without winding. For more information, see Print without winding.
You have to use a media type that can be used for printing without winding.
The printer performs the calibration.
The calibration can take quite some time, around 30 minutes. Wait until the printer is finished with the calibration. When the active job disappears and [Start] is no longer greyed out, the calibration is finished.