Brother HL-1800 series - Manual (Page 25)

CHAPTER 1 ABOUT THIS PRINTER
1-15
For Legal or 8.5 x 13 in. paper
While pressing the Universal Guide Release Lever, extend the back of the Paper
cassette.
Fig. 1-8
☛ ☛ ☛ ☛ 3.
Put paper into the paper cassette. Make sure that the paper is flat in the
cassette at all four corners and below the limit mark.
Fig. 1-9
✒ ✒ ✒ ✒ Note
Do not put more than 250 sheets of paper (80 g/m 2 or 21 lb.) in the cassette
or the paper may jam. You can load paper up to the lines on the sliding
guide.