How long can writing on thermal paper last?

How long can writing on thermal paper last?

How long can writing on thermal paper last? Thermal paper does not last forever and the writing on it fades over time. In general, the storage time of thermal paper depends on the material structure and storage environment temperature. If exposed to sunlight, the temperature exceeds 30 ° C, it can only be stored for about 10 days. If the commonly used thermal paper is placed in a cool place, it can be stored for about a year.

However, the shelf life of thermal paper is only 2 to 3 years, or even only a few months. Thermal paper with long shelf life belongs to long-term thermal paper. At present, the thermosensitive paper with good preservation can reach more than 10 years under normal storage environment (avoid high temperature and humidity, direct sunlight, avoid contact with solvents and plasticizers, etc.).

Of course, the storage time of the three thermosensitive paper is much longer than that of the single thermosensitive paper. The general storage time of single thermosensitive paper is about half a year to half a month, and the storage time of three thermosensitive paper is up to one year or even 2-3 years due to its own properties.

General supermarket receipts are printed with thermal paper, thermal paper has a special advantage, is faster printing, do not need ink. Its failure rate is also relatively low, the cost is also very low, of course, there are disadvantages, the disadvantage is that the above handwriting can not be saved for too long. Whether due to light, friction, oxidation, etc., the words and images on his paper would quickly disappear.

Many supermarket receipts are printed on heat-sensitive paper, and the heat-sensitive coating on the ticket will fade when oxidized in the air, and the writing will disappear. General thermal coatings can be used for about two months after printing. If we want to use it as proof of consumption, we'd better use a regular invoice.

As long as the public scratches the receipt on the nail, if there is a deep scratch on the white paper, it is thermal paper. In daily life, people will inevitably come into contact with thermal paper receipts. To minimize the damage, we should take as few receipts as possible. Wash your hands immediately after touching the paper and do not use alcohol-based cleaning solutions. And don't touch your mouth with the hand that has already touched the receipt.