Canon imagePROGRAF iPF815 - Manual (Page 187)

5.
Access the Main pane.
6.
In the A Media Type list, select the type of paper that is loaded. In this case, click Plain Paper.
7.
Access the Page Setup pane.
8.
Select and click a roll paper in the A Paper Source list.
Enhanced Printing Options > Conserving roll paper >
iPF815 Conserving Roll Paper by Rotating Originals 90 Degrees (Mac OS X)
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