Thermal printing technology was first used in fax machines, the basic principle of which is to convert the data received by the printer into a dot-matrix signal control heat sensitive unit heating, heat sensitive paper on the thermal coating heating and development.
Thermal printers have been widely used in POS terminal systems, banking systems, medical instruments and other fields. Thermal printers can only use special thermal paper, thermal paper coated with a layer of heat will produce a chemical reaction and discoloration of the coating, similar to photosensitive film, but this layer of coating is after heat will change color, the use of thermal coating this characteristic, the emergence of thermal printing technology.
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