Reasons for unclear printing on thermal paper

Thermal paper is specially used for thermal printers and thermal fax machine printing paper, as a record of paper has been widely used in various industries, however, the ensuing problem is that a lot of thermal paper printing is not clear. So what are the reasons that lead to thermal paper printing is not clear? Next, this article will explain it for you.

1. Improperly set printhead temperature:
The printing process of thermal paper is realized through the heating of the print head, and a proper print head temperature is needed to enable the developer coating to generate enough heat to react with the thermal paper. If the printhead temperature is too low, the developer coating may not be able to react and the printed image will be blurred. The solution is to adjust the print head temperature appropriately according to the matching requirements of the thermal paper.

2. Dirty or damaged print head:
Dust, grease, and other impurities on top of the print head can cause unclear printing. Not cleaning the print head for a long time will accumulate more dirt, and contaminants will hinder the contact between the thermal paper and the print head. A damaged print head cannot provide even heat, affecting printing results. The solution is to regularly clean the print head, you can use a special print head cleaning solution or cotton swabs dipped in alcohol to slowly clean, or regularly replace the print head.

3. Poor quality of thermal paper:
The quality of the thermal paper is also an important factor affecting the printing effect. Low-quality thermal paper can easily lead to print handwriting is not clear, image text blurred, and other problems. The solution is to replace the thermal paper roll with a high-quality one, which can improve the printing results.

4. Improper storage of thermal paper:
If thermal paper is exposed to high temperatures, high humidity, and direct sunlight, it may cause its quality to deteriorate and affect printing results. Thermal paper also has a certain shelf life, if stored for a long time or use expired thermal paper, the development coating may be degraded, resulting in poor print results. The solution is to store the thermal paper in a dry, ventilated, avoid direct sunlight environment, and regularly replace the new thermal paper.

5. Incorrect printer settings:
Printer parameters may also affect the printing effect, such as print speed, concentration, etc. The solution is to confirm whether the printer parameters are correct, if not correct need to adjust this parameter. Some printers need to be connected to the computer, we can also go to the computer to check the printer settings, the concentration of the print to increase a little bit, and appropriately reduce the print speed a little bit. The slower the printing speed, the higher the concentration, the clearer the printing results.

It should be noted that the above are only a few common causes and solutions to the proposal, the specific problem needs to be adjusted according to the actual situation. If you encounter problems that can not be solved, please consult a professional technician.