Brother HL-7050N - Manual (Page 132)

OPTIONS 4 - 5
HL7050_US_UG_FM5.5
Paper orientation for printing on both sides of the paper
The printer prints the second page first.
If you print 10 pages onto 5 piece of paper, it will print page 2 then
page 1 on the first piece of paper.
It will print page 4 then page 3 on the second piece of paper.
It will print page 6 then page 5 on the third piece of paper, and so on.
When doing duplex printing, the paper must be put into the paper tray
in the following way:
■ For the multi-purpose (MP) tray.
Put the side to be printed on first, face-up, with top of the paper
furthest away from the printer.
If letterhead paper is used, this would be put in to the MP tray with
the heading facedown, and the furthest away from the printer.
■ For the paper tray and optional lower tray (tray1, 2, 3 or 4):
Put the side to be printed on first, facedown, with the top of the
paper at the back of the tray.
If letterhead paper is used, this would be put in to the paper tray or
optional lower tray with the heading face-up, and at the back of the
tray.