Ricoh Priport DX 4640PD Printer Reference page 82

Various Types of Printing
A
Rotate the envelopes 180 degrees and place them in the paper feed tray.
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*Paper feed direction
B
Click [Add/Change Custom Settings...] on the printer driver's [Print Settings] tab.
C
On the printer driver's [Misc.] tab, select [Rotate by 180 degrees].
D
Click [OK].
The screen returns to the [Print] dialog box.
E
Click [OK] to start printing.
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