The thermal receipt printer does not use ink, but prints on thermal paper through a heating element.
Points to note during use:
1. After using for a long time, the thermal print head is covered with dirt or the heating element is aging, and the printed font will gradually become unclear.
2. With the cotton swab moistened with alcohol, wipe the print head several times in the off state, and try it after turning on the machine. If the cleaning fails, the print head life is near. You can replace the print head of the same model, but it is not easy.