Epson SureColor T3000 User Manual page 110

To fit output to the roll width, choose Fit to Roll Paper Width before selecting
Borderless.
3. In the Layout tab Borderless Enlargement Setting area, select either Auto Expand
or Retain Size.
If Auto Expand is selected, click Amount of Enlargement and choose the amount cut
off at the edges.
Note:
Retain Size is not available when Fit to Roll Paper Width is selected in the Printer
Settings tab or Reduce/Enlarge is selected in the Layout tab.
More Ways to Print 110