HP Color LaserJet 9500 Multifunction Printer series - Manual (Page 160)

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144 Chapter 6 – Control panel menus Rev. 1.0
DUPLEX *OFF
ON This item appears only when a duplexer is installed. Set the value to
ON to print on both sides (duplex) or OFF to print on one side
(simplex) of a sheet of paper.
Note
It is best to set the duplex option in the printer driver or software
program. (Printer-driver and software-program settings override
control-panel settings.)
DUPLEX BINDING *LONG EDGE
SHORT EDGE Use this item to change the binding edge for duplex printing. The
menu item appears when a duplexer is installed in the printer and
DUPLEX=ON .
Note
It is best to set the binding layout in the printer driver or software
program. (Printer-driver and software-program settings override
control-panel settings.)
Item Values Explanation