Thermal printers are bit-image devices. They cannot print vector graphics directly. The driver must perform a rasterization process:
Ensure the thermal paper is facing the right way (glossy side toward the print head).
Without the correct , your computer will recognize the printer as an "Unknown USB device." You will not be able to adjust print density, set label sizes, or even print a simple test page. In essence, the driver unlocks the full potential of your thermal printer.
Incorrect paper size detection. Fix: