The supermarket cash register the printer common problem _ printing devices
supermarket cash register three conditions: the most common printer to print the fuzzy, print the handwriting shows half, blank printing. First printing blurred, two kinds of causes, one is thermal head is damaged, another is the quality of the printing paper. Appear this kind of situation can check printing paper, replace the other printing paper, printing paper to choose and buy of choose and buy quality of a material is smooth, without impurities, flexibility good paper. If the replacement of paper also not line, that is the thermal head is damaged, need to be replaced back to factory. Second, the printer to print the handwriting show only half, is also the result of a damaged thermal head, at this time also need to change back to factory. Finally, blank printing are also associated with the thermal head, first check the thermal head if there is any deformation, whether in the position of the original card is good, if there is a tilt or deformation, can cause unable to gain access to the paper, blank to print. If everything is normal, it's thermal head is damaged, change can only be returned to the factory.