A thermal printer is a device represented by the symbols 🌡️🖨️. It uses heat to create images or text on paper, making it an efficient and reliable method of printing. The printer generates heat from a thermal print head, which selectively heats up coated thermal paper to produce the desired output. This technology eliminates the need for ink or toner cartridges, making thermal printers popular in various industries such as retail, logistics, and healthcare.