Thermal paper is a kind of processed paper, and its manufacturing principle is to coat a layer of "thermal paint" (thermochromic layer) on high-quality base paper. This color-changing layer mainly contains fluorescent compounds, color developers, sensitizers, fillers, adhesives, stabilizers and lubricants.
The principle of thermal head is an independent small resistor, which generates heat when electrified and is close to thermal paper to realize printing function.
Main uses: as the communication carrier of words and graphics on fax machines, that is, as fax paper; Used as recording materials in medical and metering systems, such as ECG paper, heat sensitive instrument recording paper, etc. Printing paper for Internet terminals; In commercial activities, it is used to make trademarks, identification codes (POS), etc., in which the amount of fax paper accounts for the largest proportion.