A:

1.There is dust in the printer, which needs to be cleaned in time;

2. If the printing temperature is too low, increase the printing temperature

3. Adjust the front and back positions of the print head on the lighter side of the printer to the highest point of the horizontal plane between the print head and the roller;

4. The pressure on both sides of the print head is unbalanced, and the pressure on the lighter side of the printer needs to be increased;

5. If the carbon tape does not match the label, the printing is not clear. Replace the appropriate carbon tape or the label.