- 49 -4. Useful Print FunctionsYou can print on both sides of a sheet of paper.• Duplex printing is available for the following paper sizes.A3, A4, A5, B4, B5, B6, Tabloid, Letter, Legal (13 inches), Legal (13.5 inches), Legal(14 inches), Executive, 8K (260 mm x 368 mm, 270 mm x 390 mm, 273 mm x 394 mm),8.5SQ (8.5 in x 8.5 in), Folio (210 mm x 330 mm), 16K (197 mm x 273 mm, 195 mm x270 mm, 184 mm x 260 mm), Custom size• When printing on custom size paper, duplex printing is available for the following width and length ranges.- Width: 148 to 297 mm (5.8 to 11.7 inch)- Length: 182 to 431.8 mm (7.2 to 17.0 inch)• Duplex printing is available for the following media weight.When using A4 paper or larger, 52 to 220 g/m2 , when using smaller paper than A4, 64 to220 g/m 2 (17 to 59 lb).Do not use media weight other than the above, because paper jams may occur.• This function may not be available for some applications.• For C824/C834, the optional Duplex Unit is required.• For Windows PCL Printer Driver1 Close the rear output tray.2 Open the file to print.3 Select [Print] from the [File] menu.4 Click [Preferences].5 Select [Long Edge] or [Short Edge] from [2-Sided Printing] on the [Setup] tab.6 Change other settings if necessary, and then click [OK].7 Click [Print] on the [Print] screen.• For Windows PS Printer Driver (C834/C844/ES8434)1 Close the rear output tray.2 Open the file to print.3 Select [Print] from the [File] menu.4 Click [Preferences].5 Select [Flip on Long Edge] or [Flip on Short Edge] from [Print on Both Sides]on the [Layout] tab.6 Change other settings if necessary, and then click [OK].7 Click [Print] on the [Print] screen.• For Mac1 Close the rear output tray.2 Open the file to print.3 Select [Print] from the [File] menu.4 Select [Long-Edge binding] or [Short-Edge binding] from [Two-Sided] on the[Layout] panel.5 Change other settings if necessary, and then click [Print].• If setting details are not displayed in the print dialog, click [Show Details] at the bottom of the dialog.Printing on Both Sides of Paper (Duplex Printing)