HP LaserJet 9000 Printer series - Manual (Page 51)

5 Printing 51
Orienting media
Type of media Tray Duplexed Orient media like this
Prepunched Letter or A4
(weights up to 216 g/m
2 )
(58 lb bond)
1 No Long edge with holes toward feed direction; side to
be printed facing up.
Prepunched Letter or A4
(weights up to 216 g/m
2 )
(58 lb bond)
1 Yes Long edge without holes toward feed direction; first
side to be printed facing down.