How does a thermal printer generate images?

A thermal printer generates images through a process that involves heat. Specifically, it utilizes heated pins or elements that contact heat-sensitive paper. When these heated elements are activated, they produce heat that causes the coated surface of the thermal paper to react, creating images or text. This method is distinct from traditional printing techniques that rely on liquid ink, as thermal printers do not involve any form of ink; instead, they use the heat to alter the color of the paper directly.

The mechanism is efficient and quiet, making thermal printers commonly used in printing receipts and labels. The use of heat-sensitive paper is crucial here, as the paper is designed to change color when heated, allowing for clear and precise output without the mess and drying time associated with traditional inks.