The working principle of thermal printer

The working principle of a thermal printer is that a semiconductor heating element is installed on the print head

After the print head is heated and exposed to the thermal printing paper, the desired pattern can be printed

The image is generated by heating, which produces a chemical reaction in the film

This thermal printer chemical reaction is carried out at a certain temperature

High temperature will accelerate this chemical reaction

When the temperature is lower than 60℃, the paper will take a long time, even several years, to become dark

When the temperature is 200°C, this reaction will be completed in a few microseconds.

Application of thermal printer

The principle is to convert the data received by the printer into a dot matrix signal to control the heating of the thermal unit

Thermal printers have been widely used in POS terminal systems, banking systems, medical equipment and other fields

Thermal printers can only use special thermal paper

The thermal paper is coated with a coating that will change color by chemical reaction when exposed to heat

Similar to photographic film, but this layer of coating will change color when exposed to heat

Using this characteristic of thermal coating, thermal printing technology emerged.

FAQ

Q1: Do I need ink?
A1: No, the print head develops color by heating the color-changing layer on the thermal paper point by point.
Q2: Is it possible to print in color? Or is it only black and white?
A2: Dear, only one color can be printed at a time, usually black.

At present, there are blue, red, pink and other monochrome writing thermal papers on the market;

In addition, there are color thermal papers, which are printed with different colors of base paper in black.
Q3: Can I print on thermal adhesive paper?
A3: Support printing on self-adhesive paper and thermal paper.
Q4: What kind of thermal paper is used?
A4: It can support thermal paper rolls with a width of 112mm and a diameter of 40mm.

It is recommended to use the official ten-year thermal paper, which does not contain bisphenol A

It can be stored for ten years in the specified environment.