HP Deskjet 6943 Printer - Manual (Page 108)

The duplexer only supports certain paper types. For a list of supported paper types, see
the
duplexer specifications .
Learn how to install the duplexer.
Use the duplexer to print a two-sided document automatically.
Follow these tips to solve automatic two-sided printing problems .
Install the duplexer
Follow these steps to attach the duplexer to the printer:
1.
Push the two latch handles on the printer's rear access door toward each other, and
then remove the door.
Note Do not discard the rear access door. In order to print, either the
duplexer or the rear access door must be attached to the printer.
2. Insert the duplexer in the back of the printer until both sides snap into place.
Note Do not press the buttons on either side of the duplexer when installing
it in the printer. Use the buttons only when removing the duplexer from the
printer.
Automatic two-sided printing
To print a two-sided document automatically, one of the following accessories must be
attached to the printer:
Chapter 12
106 HP Deskjet 6940 series