Brother MFC-T4500DW Online User's Manual page 30

If you load Executive or B5 (JIS) size paper, lift up the stopper (4).
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4. Fan the stack of paper well to avoid paper jams and misfeeds.
Always make sure the paper is not curled or wrinkled.
5. Gently load paper in the paper tray with the printing surface face down.
Landscape orientation
IMPORTANT
Be careful not to push the paper in too far; it may lift at the back of the tray and cause paper feed
problems.
To add paper before the tray is empty, remove the paper from the tray and combine it with the paper you
are adding. Always fan the stack of paper well to prevent the machine from feeding multiple pages.
6. Make sure the paper length guide (1) touches the edges of the paper.
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7. Gently adjust the paper width guides (1) to fit the paper.
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