Epson TM-U300C Operator's Manual page 24

Replacing the paper roll in the TM-U300D/U300PD
Be sure to use roll paper that matches the printer's specifications. See Appendix
A, Specifications.
Open the roll paper cover.
Remove the roll paper core. If there is roll paper remaining, cut the paper
straight across using scissors at the place shown in illustration below.
While pressing the FEED button, remove the remaining roll paper in the printer
by pulling the paper lightly out in the direction of the arrow.
Cut here if there is paper remainin
To install a new paper roll, see Installing the paper roll in the TM-U300D/U300PD, on
page 14.