First you have to see if the problem is really the jam problem, open the top of the printer cover, look inside the printer to find out.
1. When the magnetic paper jammed in the printer, the first action is turn off the power of the printer, then decide whether to draw the magnetic paper out from the outside or from the inside according to the situation of the jamming. it should be very careful to prevent the magnetic paper left in the printer.
2. Before printing, it is better to check whether the printer panel or paper slot has equipped with "PaperSizeSelector" (media size selection) switch. If there is, according to the magnetic paper size to choose A4 or other options, so that magnetic paper can feed in the paper and has no jamming caused by slant.
3. When adding magnetic paper to the paper slot, be sure to take out the original paper, which will be folded neatly with the newly added magnetic paper and then put them back into the paper slot. This can avoid the jamming caused by feed in more than one pieces of the magnetic paper one time.
4. Some magnetic paper has poor quality, plus the poor environment of the printer. The surface area of the rubbing wheel leaves paper scraps and dust, which reduces the strength of the rubbing wheel and causes skidding. So use cheap and poor quality magnetic paper. As far as possible choose better quality magnetic paper, in addition to the use of the printer a cleaner environment.