Epson Stylus Color 980 Manual page 114

3. Specify which edge of the paper the binding will be on. You
can choose between Left, Top, and Right.
Note:
While Portrait is selected as the Orientation setting in the printer
driver, you can choose between Left and Right. While Landscape
is selected, you can only select Top.
4. Specify the width of the binding margin by entering a value
in the Binding Margin text box. You can specify a value
between 3 mm and 30 mm. This margin width will be inserted
on both sides of the fold. For example, if you specify a value
of 10 mm, a 20-mm margin will be inserted, with 10 mm on
each side of the fold.
5. Click OK to return to the Page Setup dialog box, then click OK
to save your settings.
6. Load paper in the sheet feeder, then send the print job from
your application.
5-20
Using the Printer Software for Macintosh
Portrate
Margin
Folding
Edge
Landscape