Thermal paper is not just an ordinary paper but it has many various advantages associated with it. These papers are different from the ones we use in our daily lives such as in note pads and registers. Thermal paper rolls are now extensively being used in banking and other industries all over the world. Thermal paper is a special type of paper which is coated with chemicals on the outside and this chemical helps the paper to change color when it is exposed to heat. The surface of the thermal paper is saturated with a mixture of a dye and few chemicals. When the paper is exposed to heat the dye reacts with the acid and then the paper changes its color. There is also a protective coating on top of the thermal paper so that it does not fade due to UV rays, water and oil and does not cause much damage to it. This layer also protects the paper from getting messed by the printer heat.