You can print according to the width of the roll paper loaded in the printer.
On the printer driver's Main tab, select Roll Paper from Source.
Select the Layout tab, and then select a paper size from Page Size that matches the document size.
Select Reduce/Enlarge and click Fit to Roll Paper Width.
Select the width of the roll paper loaded in the printer from Roll Width.
Set the other items on the Main and Layout tabs as necessary, and then click OK.
Click Print.