What is the printing principle of PET thermal sensitive silver paper?

The printing principle of PET thermal sensitive silver paper is mainly based on thermal printing technology. Specifically, its printing principle can be summarized as follows:

Fundamentals of thermal printing technology

Thermal printing technology is a technique that achieves printing by heating a specific area to trigger a chemical reaction. This technology does not require consumables such as ink cartridges or carbon ribbons, but relies on a special coating on the surface of thermal paper (in this case, PET thermal silver paper) to develop colors.

Construction of PET thermosensitive silver paper

PET thermosensitive silver paper is usually composed of a PET (polyester film) substrate and a special silver coating layer. This layer of silver coating not only gives the paper a premium texture, but also contains hidden dyes and acidic substances used for color development.

Printing process

Heating: When PET thermal silver paper is fed into a thermal printer, the tiny semiconductor components on the print head will heat specific areas of the paper as needed.

Chemical reaction: After being heated, the latent dye and acidic substances melt and undergo a chemical reaction in the coating of PET thermosensitive silver paper. This reaction causes the dye to change color, resulting in the appearance of images or text on the paper.

Color development: With the progress of a chemical reaction, the originally colorless latent dye becomes visible color, forming the desired printed content.

Characteristics and advantages

Efficient: Thermal printing technology is fast and can complete a large number of printing tasks in a short period of time.

Environmental Protection: Due to the absence of consumables such as ink cartridges or carbon ribbons, the printing process of PET thermal sensitive silver paper reduces the generation of waste and meets environmental requirements.

High clarity: Thermal printing technology can generate clear images and text, meeting various printing needs.

In summary, the printing principle of PET thermal sensitive silver paper is based on thermal printing technology, which triggers chemical reactions on the surface of the paper through heating to achieve color development. This printing method has the advantages of high efficiency, environmental friendliness, and high clarity, and is widely used in various occasions that require fast and high-quality printing of labels.