Thermal printers produce the printed image by selectively heating coated thermal paper as the paper passes over the thermal head. Thermal printers push electrically heated pins against heat-sensitive paper.

There are a few different types of thermal printers. Most thermal printers find applications in stores for printing receipts. There are two basic types of thermal printers- wax ?transfer printers and dye-sublimation printers.

Wax-transfer thermal printers work by heating the colored wax on the heat sensitive areas. The areas of the paper that melt form images and texts. The advantage of this printer is that it does not smear.

Dye-sublimation thermal printers use heat to transfer colored dye to specially coated paper. These printers find a lot of use in medical laboratories, photography studios and high end printer stores. The lower-end of dye sublimation thermal printers can be used at homes and stores. However, the disadvantage of the low end version of the printer is that it can print only certain sizes.

Thermal printers are more expensive that ink-jet printers but less expensive then colored laser printers. They are used mostly in stores and home businesses. They are one of the most convenient printers to use for printing out receipts.

Thermal printers can print in black as well as in color. Most times these printers can print only one color in addition to black. The color that is printed out depends on the coating that is applied to the thermal sensitive paper.

Thermal papers used with thermal printers are usually impregnated with dyes. As the paper rolls through the printer head, the dyes on the paper react to the heat in different ways.

These printers are widely available in all stores. However, before buying Thermal printers, individuals should shop around for rates. They should also read ratings by professionals and end users to find out more about the printer they intend to purchase.