It is also possible that the paper outlet of the printer is not aligned with the opening of the touch screen, resulting in the printed paper directly in the touch integrated machine. The solution to this problem is to turn the print head up or down a little, depending on the actual situation on the spot. Another method is to use a piece of smooth hard paper and cut it into the size and length of the paper outlet of the top printer. Then stick it on it, and the printed paper will come out along this hard paper.