the paper on which the receipt is printed is called thermal paper.

thermal paper is a special kind of paper, which can produce images and characters through the thermal head in a thermal printer. When the thermal head is heated, the photosensitive layer on the paper will react chemically, thus forming a visible printing effect. Because thermal paper does not need ink or carbon tape, it is convenient to use and saves cost. At the same time, thermal paper also has the characteristics of water resistance, oil resistance and wear resistance, and is suitable for various small ticket printing scenes.