The driver may be using the wrong paper size. Go to Printing Preferences > Paper/Quality > Advanced . Set the paper size to 80mm x 297mm (or the exact size of your receipt paper). Change the layout to Continuous roll .
Uninstall any previous versions. Go to Device Manager , find the TEP-300 under "Print queues" or "Unknown devices," right-click, and select Uninstall device . Restart your PC, then reinstall the driver as Administrator. e-pos tep-300 thermal printer drivers
The E-POS TEP-300 thermal printer drivers Go to product viewer dialog for this item. The driver may be using the wrong paper size