What could be the possible reasons for unclear printing on BOPP thermal synthetic paper?

The unclear printing of BOPP thermal sensitive synthetic paper may be caused by various reasons. The following are some main reasons and corresponding solutions:

1、 Thermal sensitive coating and paper quality

Poor quality of thermal sensitive coating:

The quality of thermal sensitive coating directly affects the printing effect. If the coating quality is poor, it may cause problems such as unclear color rendering and blurry handwriting.

Solution: Choose high-quality thermosensitive synthetic paper to ensure reliable quality of thermosensitive coating.

Poor paper storage condition:

Long term storage of paper or storage in poor environments may lead to a decrease in coating performance and affect printing results.

Solution: Ensure that the paper is stored in a dry and cool environment, avoiding prolonged exposure to sunlight or high temperatures and humidity.

2、 Printer settings and status

Improper temperature setting of print head:

The printing process of thermal paper is achieved by heating the print head. If the print head temperature is set too low, the printed image will be blurry.

Solution: Check the temperature setting in the printer settings and ensure that it matches the requirements of the thermal paper.

Dirty print head:

Dust, grease, and other impurities on the print head can affect the printing effect and cause blurry printed images.

Solution: Regularly clean the print head using professional cleaning agents or a soft cloth dipped in alcohol for cleaning. Clean gently to avoid damaging the print head.

Printing speed too fast:

When the printing speed is too fast, the printer's heating resistor may not have enough time and heat to allow the printing paper to fully react, resulting in unclear handwriting.

Solution: Reduce printing speed, give enough heating time to the paper, and ensure printing quality.

3、 Environmental factors

Humidity and temperature:

During the printing or storage process, if the humidity and temperature are not suitable, the paper may curl or deform, thereby affecting the printing effect.

Solution: Monitor the humidity and temperature of the printing environment and maintain them within an appropriate range. Usually, a dry and cool environment is more conducive to maintaining the flatness and printing effect of paper.

4、 Other factors

Printer hardware malfunction:

Sensor failure, temperature control failure, and mechanical component failure may result in unclear printing.

Solution: If you suspect that the problem is caused by hardware malfunction, it is recommended to promptly contact after-sales service or professional repair personnel for inspection and repair.

Improper printing density setting:

Setting the printing density too low may also result in unclear printing.

Solution: Adjust the print density in the printer setting to ensure clear printing effect.

In summary, the unclear printing of BOPP thermal sensitive synthetic paper may be caused by various reasons. When solving problems, it is necessary to comprehensively consider factors such as paper quality, printer settings, environmental factors, and other hardware failures, and take corresponding solutions.