What types of inks are suitable for printing long-lasting three proof thermal paper?

For long-lasting three proof thermal paper, due to its special material and purpose, traditional ink printing is usually not required. The principle of thermal paper is that when the paper is heated, colorless dyes react chemically with color developing agents to produce color. Therefore, during the printing process, the print head of the thermal printer heats the thermal paper, causing the surface of the paper to display graphics and text.

However, if additional printing or marking is required on the surface of the long-lasting three proof thermal paper, such as adding barcodes, text, or patterns, the following types of ink can be considered:

1. UV ink:

Features: UV ink can quickly cure under ultraviolet irradiation, with good wear resistance, weather resistance, and chemical stability.

Applicable scenarios: Suitable for occasions that require high-quality printing effects and high requirements for wear resistance and weather resistance. For example, when printing barcodes, text, or patterns on the surface of long-lasting three proof thermal paper, UV ink can be chosen to ensure long-lasting and clear printing effects.

2. Water based ink:

Features: Water based ink uses water as a solvent, which is environmentally friendly and non-toxic. It has less volatile substances during the printing process and has a small impact on the environment.

Applicable scenarios: Suitable for occasions with high environmental requirements and certain requirements for printing effects. Although water-based ink may be slightly inferior to UV ink in terms of wear resistance and weather resistance, it is still a good choice in some environmentally demanding situations.

3. Thermal anti-counterfeiting ink:

Features: Thermal anti-counterfeit ink can undergo color changes or fading of graphics and text under the action of heat, and has anti-counterfeit function.

Applicable scenarios: If you need to add anti-counterfeiting labels on the surface of long-lasting three proof thermal paper, you can choose thermal anti-counterfeiting ink. This ink will display or disappear specific images and text at a specific temperature, thus playing a role in anti-counterfeiting.

It should be noted that due to the special material and use of long-lasting three proof thermal paper, when selecting ink, factors such as compatibility between ink and paper, adaptability of printing equipment, and requirements for printing effect need to be considered. Therefore, in practical applications, it is recommended to choose according to specific circumstances and consult professional printing technicians or suppliers for advice.

In addition, for the printing of long-lasting three proof thermal paper itself, due to its principle of color development through thermal reaction, traditional ink is not required. If it is necessary to change or customize the color rendering effect of thermal paper, it can be achieved by adjusting the dyes and color developers in the thermal coating.