Epson Stylus Pro 4000 Reference Manual page 78

Single Cut
Select this setting if you want to save paper. If you select this
setting, the boundary of a picture and a picture, or boundary of a
page and page is cut. However, the cut position may shift slightly.
Double Cut
Select this setting to avoid the slight gap that occurs with the
Single Cut setting. A margin is created between the pictures, and
1mm along the inside of each picture is cut.
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Printing with Windows