Sometimes, due to environmental or application needs, it is necessary to configure the printing temperature and/or speed.
For Zebra printers you can operate in two ways:
If you use the Zebra Designer software you can click on the arrow next to the "Print" button and then on "Printer Settings ...": a window will open where you can configure the aforementioned settings. (The temperature corresponds to the darkness item)
Otherwise you can configure these settings from Windows. You have to go to the Control Panel, then "Printers and Faxes" (Windows 7 and earlier) / "Devices and Printers" (Windows 10); select the printer for which you need to change the parameters with the right button and choose the "Printer Properties" item and in the window that will open click "Preferences ..."; a new window will open where you can configure the above settings. (The temperature corresponds to the darkness item)