Supports 79.5±0.5mm paper width (80mm series) with an outer diameter of $\leq$80mm.
Go to Printer Properties > Preferences > Advanced > Print Quality . Set “Density” between 70% and 85% for standard receipt paper. For high-gloss labels, increase to 90%. Chaser Ch-e80 Print Driver
Which are you using? (USB, Ethernet, or Serial?) Are you pairing it with a specific POS software platform ? Supports 79
The printer operates using direct thermal printing technology, requiring no ink or toner. Up to 220mm/s. Resolution: 203 DPI (8 dots/mm). Chaser Ch-e80 Print Driver
How is the printer connected to your computer ()?