Tharmal Paper is a type of specialty paper that can change color when exposed to heat, without the use of traditional ink. It is usually used in thermal printers specifically for devices such as cash registers, credit card terminals, and adding machines. Thermal paper is manufactured by the application of special heat-sensitive chemical materials to a paper base. The chemicals used can vary with the manufacturer.

Tharmal Paper is a type of specialty paper that can change color when exposed to heat, without the use of traditional ink. It is usually used in thermal printers specifically for devices such as cash registers, credit card terminals, and adding machines. Thermal paper is manufactured by the application of special heat-sensitive chemical materials to a paper base. The chemicals used can vary with the manufacturer.