Brother MFC-9460CDN - Page 157

Troubleshooting
149
B
Envelope creases  Make sure that the two grey envelope levers are pulled down when
you are printing envelopes.
 If creases occur with the envelope levers in the envelope position,
print with the back cover opened and feed one envelope at a time
from the MP tray.
Examples of poor print
quality
Recommendation
ABCDEFG
EFGHIJKLMN