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Some thermal papers may have additional protective layers to prevent fading of the text or images. In contrast, regular papers do not have heat-sensitive chemicals on their surface and rely on traditional ink to produce text and images. Furthermore, unlike thermal papers, regular papers are comparably thin and lucid.

Thermal paper (sometimes referred to as an audit roll) is a special fine paper that is coated with a material formulated to change color when exposed to heat. It is used in thermal printers, particularly in inexpensive or lightweight devices such as adding machines, cash registers, and credit card terminals.

Also sometimes called receipt printing paper, thermal paper is a kind of specialty paper that changes color when it's exposed to heat, which means it does not require traditional ink.

Low Printing Cost – Thermal paper rolls are a more affordable printing option than other paper and printing methods. Using regular paper can be expensive not only because of the paper cost but also because of ink expenses. Buying ink or toner can cost more than the printer itself over time.

Scratching with your fingernail is the easiest way to determine whether a paper is thermal. Since thermal paper has a chemical coating on the surface, it generates heat when you scratch it. As a result of the heat, the paper will produce black marks.

Thermal paper is the most widely used type of receipt paper. You likely come across it daily because many cash registers, debit and credit card machines, ATM machines, and POS systems all use thermal paper rolls. Businesses that still use fax machines use thermal paper rolls too.

Thermal printers can only work with thermal papers. This is because the principle behind thermal printing technology involves a printing head heating thermal paper with chemicals. The normal paper doesn't have chemicals that will show text or images when heated.