Working principle of portable printer

The working principle of the portable printer is that the semiconductor heating element is installed on the print head. After the print head is heated and contacts the thermal printing paper, the required pattern can be printed. The principle is similar to that of the thermal fax machine. The image of the portable printer is generated by heating and chemical reaction in the film.

The chemical reaction of this portable printer is carried out at a certain temperature. The high temperature will accelerate the 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 ℃, the reaction will be completed in a few microseconds.

The advantages of thermal printing of portable printer are fast speed, low noise, clear printing and convenient use. The printed documents cannot be permanently stored. If the best thermal paper is used, it can be stored for ten years. The portable printer is a paper material treated with high thermal sensitivity thermal coating. It is commonly called thermal paper and does not need carbon tape.

Since the coating material on the carbon ribbon can be selected according to the needs to produce strong adhesion, and the selection of the printing medium can ensure that the printed handwriting is not affected by the outside world, and the heating process can be controlled by the printing software. At present, there are many kinds of software specially used to print bar codes.