17 ï EnglishDuplex Printing(Printing on Both Sides of the Page)Duplex printing requires that theoptional Duplex Unit (OKI P/N43347501) be installed.Long Edge versus Short EdgeLong EdgeShort EdgeSpecificationsPaper Weight20 to 28 lb. US Bond (75 to 105g/m2 ).NoteIf you experience curling with 20or 24 lb. paper, switch to 28 lb.Paper FeedTray 1, Optional Tray 2 or MP Tray.Paper ExitTop Exit tray or Rear Exit tray.Paper Sizesï Letter, Legal-14, Legal-13.5,Legal-13, A4, A5, Executive, B5.ï Custom: MP Tray only, range 5.8"x 8º" (148 x 210 mm) to 5.5" x14" (215.9 x 355.6 mm)How to Print a File Using theDuplexerOpen the file you wish to print andclick File → Print. Select the MC560MFP printer.Windows PostScript Emulation1. Click Properties.2. On the Layout tab, select LongEdge or Short Edge under Print onBoth Sides.Windows PCL Emulation1. Click Properties.2. On the Setup tab, select LongEdge or Short Edge under 2-SidedPrinting.