What is the role of the thermal coating on the small roll of thermal label paper?

The thermal coating of small rolls of thermal label paper plays a crucial role in the performance and application of the label paper. Its main functions can be summarized as follows:

First, heat sensitive color

Key function: Thermal coating is a key part of thermal paper to achieve thermal color development. When the thermal sensitive coating is stimulated by heat energy, a chemical reaction will occur, thereby changing the color and forming words, images, etc.

Application scenario: This feature makes thermal label paper widely used in supermarket electronic scale labels, price labels, express sheets and other fields, which can quickly and accurately print out the required information.

Second, adapt to different printer needs

Activation temperature design: Thermal coatings can be designed to different activation temperatures as needed to adapt to the printing needs of printers with different performance. This makes the thermal label paper in a variety of printing environments can show good printing results.

Third, affect the print quality and storage time

Coating uniformity: The uniformity of the thermal coating directly affects the print quality. If the coating is not uniform, it will lead to dark colors in some places and light colors in some places when printing, reducing the print quality.

Chemical formulation: The chemical formulation of the heat-sensitive coating is also critical. Reasonable formula can extend the storage time of printing paper, so that it can be stored at room temperature for several years. The unreasonable formula may lead to the printing paper storage time is greatly shortened.

Fourth, protect the thermal layer and print head

Protective layer function: Some thermal label paper is also designed with a protective layer above the thermal coating. The main role of the protective layer is to protect the thermal layer from chemical corrosion and pollution, while reducing the wear of the printer's thermal components during the printing process.

Absorption of light: The protective layer can also absorb some of the light that causes the chemical reaction of the thermal coating, thus slowing the deterioration of the printing paper.

Fifth, other functions

Improve the density and gloss: the film forming agent in the thermal coating can form a coating film, improve the density and gloss of the thermal paper, and make the printed text or image more clear and vivid.

Adjust the color: The use of hair color agent can adjust the color of the text or image to ensure that the print effect meets the actual needs.

In summary, the thermal coating of small roll thermal label paper plays an important role in color rendering, adapting to the needs of the printer, affecting print quality and storage time, protecting the thermal layer and print head, and improving the density and gloss. Together, these functions ensure the reliability and efficiency of thermal label paper in various application scenarios.