Cash registers - Import export

Thermal paper is a special fine paper that is coated with a material formulated to change color locally when exposed to heat. It is used in thermal printers such as adding machines, cash registers, and credit card terminals and small, lightweight portable printers. The surface of the paper is coated with a chemical substance which changes color when heated above a certain temperature. The printer essentially consists of a transport mechanism which drags the paper across a thermal dot matrix print head. The (very small) dots of the head heat up very quickly to imprint a dot, then cool equally quickly.