Thermal paper: used as a communication carrier for text and graphics on the fax machine, that is, as fax paper; Used as recording materials in medical and measurement systems, such as ECG drawings, thermal instrument recording paper, etc.; Printer paper for Internet terminals; In terms of commercial activities, it is used to make trademarks, code signing (POS), etc., of which the amount of fax paper accounts for a large proportion.

The production principle of thermal paper is to apply microparticle powder on the ordinary paper base, the composition is colorless dye phenol or other acidic substances, separated by a film, under heating conditions, the film melts,,,, , the powder is mixed to . reaction The handwriting on the thermal paper is unstable and easy to fade, making the content of the document illegible.

Commonly used lottery tickets use thermal paper.

Ordinary thermal paper is not suitable for long-term storage, but good thermal paper can be stored for 30 years or even longer.