Brother HL-5380DN User Manual page 155

Examples of poor print
quality
Curled or wavy
Wrinkles or creases
Envelope Creases
Check the paper type and quality. High temperatures and high humidity will cause
paper to curl. See About paper on page 6.
If you do not use the printer often, the paper may have been in the paper tray too
long. Turn over the stack of paper in the paper tray. Also, fan the paper stack and
then rotate the paper 180° in the paper tray.
Make sure that the paper is loaded properly. See Printing on plain paper, bond
paper or transparencies from Tray 1, 2 or 3 on page 11.
Check the paper type and quality. See About paper on page 6.
Turn over the stack of paper in the tray or try rotating the paper 180° in the input
tray.
Make sure that the envelope levers inside the back cover is pulled down when
you print the envelope.
Note
When you have finished printing, open the back cover and reset the two blue levers
back to their original position.
Recommendation
Troubleshooting
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