1. First, check whether the position of the cashier paper is appropriate and whether it is aligned with the paper tray. When putting the paper, it should be placed flat. In order to avoid accidents when the paper tray enters the paper slot;
2. Whether the print head of the printer is placed in a position suitable for the number of layers of paper, so as to avoid that the print head is too close to the paper, which will lead to friction ribbon and paper jam;
3. After printing, it should be placed at the paper feeding position so that the paper can be printed quickly;
4. When using flat paper, you should choose a relatively appropriate printer.
