The most common Thermal Printer Supplies uses a fixed print head with heated lattice. The print head has 320 square points, each point is 0.25mm × 0.25mm. With this kind of dot matrix, the printer can put the printing point on any position of the thermal paper. This technology has been used in paper printers and label printers.
The working principle of the Thermal KIOSK Receipt Printer is that a semiconductor heating element is installed on the Android POS Terminal head. After the printing head is heated and contacted with the Fiscal Thermal Printer paper, it can print out the required pattern. Its principle is similar to that of the thermal fax machine. The image is generated by heating and chemical reaction in the film. The chemical reaction of the thermal printer is carried out at a certain temperature. High temperature will accelerate the chemical reaction. When the temperature is lower than 60 ℃, it takes a long time, even several years, for the paper to turn dark; when the temperature is 200 ℃, the reaction will be completed in several microseconds.
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