This may be caused by poor quality of the thermal paper or a problem with the thermal head.
Check the thermal paper first. If it doesn't work, just change the paper and try it.
If there is no improvement, clean the thermal head and look at the printing effect, otherwise replace the thermal head.
Anti-Slip Foot Pad Super Absorb Dry Diatomite Kitchen Mat.Its main material is diatomaceous earth.Its main characteristic is super super super absorbent,which can instantly absorb water from your feet and non-slip.It is also all-natural and can absorb harmful chemicals from the air 24 hours a day.What's more, it's easy to clean up and can be customized.
Fast Drying Kitchen Mat,Antibacterial Carpet Mat,Soft Mat Carpet,Kitchen Rugs
zhangjiagang wellyoung material co.,ltd , https://www.wellyoung-board.com