Nowadays, thermal printers are used in a wide range of applications, but the basic principles of how they work are not understood by everyone. Thermal printer and thermal paper work together to handle our daily printing needs. So what is the basic working principle of a thermal printer?

First, thermal printers do not need printer cartridges and install carbon tape (printing ribbon).

The basic working principle of thermal printer is that the printing head is installed with semiconductor material heating components. After heating the printer nozzle and touching the thermal printing paper, the desired pattern can be printed. Its basic principle is similar to that of a thermal fax machine. Images are generated by the formation of chemical changes in the thermal paper film by heating.

This type of thermal printer change is required at the corresponding ambient temperature. High temperatures can accelerate these chemical changes. When the ambient temperature is less than 60 ° C, it takes quite a long time, even up to several years, for the printed paper to turn dark. Such reactions occur in microseconds at ambient temperatures of 200 ° C.

Therefore, in order to make the thermal printer to print graphics and content, it must meet the requirements of the two prerequisites, thermal paper and high temperature, no printer cartridges and print ribbon.

So how does a thermal printer produce blank paper? It can be ruled out on the basis of two factors.

First, thermal paper. It must be thermal paper. You can’t print on ordinary paper. If thermosensitive paper is clearly applied and still cannot be printed, check whether thermosensitive paper is loaded upside down. Thermal paper is printable on only one side, which is relatively smooth and has black scratches when you scratch it with your fingernail. This trick can also be used to determine whether it is plain paper or thermal paper.

Second, the hot weather. The thermal film must form a high temperature weather can make the thermal paper chemical reaction and print out the content. Of course, you can’t touch the heat sensitive film directly with your hand, it will burn your hand. If the application is thermal paper and the installation is correct, or the print does not come out the word, or the writing that prints out is ambiguous, most is thermal sensitive head damaged, can be wiped with alcohol at a time, see can not be improved, if still ambiguous, most is thermal sensitive piece is broken, need to be replaced.