This is 3″ Thermal Receipt Printer High printing speed up to 250mm/s, Receipt printers are an important part of a point of sale (POS) system. They are used in retail environments to print credit card slips and customer receipts. Restaurants also use receipt printers to print off orders back in the kitchen or at the bar. The main options for choosing receipt printers include thermal printers (most common), dot matrix printers, and inkjet printers. Thermal printers cost more than dot matrix printers, but are more popular due to their improved print quality, faster speed, and quieter functioning. Thermal printers print by direct contact between the thermal head (which generates heat) and thermal paper (which is thermally coated to be sensitive to heat). Therefore thermal printers do not require ink or toner, and over time this helps to make up for the higher initial cost.