Thermal paper printing is a technology that uses heat sensitive materials for printing, and its main characteristics are fast speed, high precision and simple operation. In many cases, it is widely used in the fields of receipts, bar codes and labels, and can also be used for daily necessities such as home printers. So, what is the principle of thermal paper printing?
The principle of thermal paper printing mainly involves the following aspects:
1, heat sensitive materials
Thermal paper printing uses a substance called a "heat sensitive material," which can change color by heating. Typically, heat sensitive materials consist of heat sensitive dyes and substrates. Among them, the thermal dye is a substance that can absorb heat energy and undergo chemical reactions, and the substrate is the carrier that supports the thermal dye.
2, heat sensitive head
The thermal head is one of the core components of the thermal paper printer, which triggers the chemical reaction of the thermal dye by heating, so as to achieve the generation of patterns. The thermal head typically consists of hundreds of tiny "heating elements," each of which controls temperature and position, enabling precise control of the printed pattern.
- Conveyor belt
The conveyor belt is another important part of the thermal paper printer, which can automatically transport the thermal paper under the thermal head and discharge it after the printing is completed. The conveyor also includes sensors, motors and other components to control the movement and stopping of the paper, and to ensure the stability and accuracy of the printing process.
- Control circuit
All components of the thermal paper printer are managed and controlled by the control circuit, which is usually composed of the central processor, memory, input and output interfaces. The control circuit can control the temperature and position of the thermal head, while also controlling the speed and stop of the conveyor belt, and converting the received data into the signal required by the thermal head.