Brother DCP-8155DN - Manual (Page 160)

Printing and Faxing
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Feature Sets: General 2
 Ghost Reduction Setting
If you are using the machine in a high humidity environment this setting may reduce ghosting on the paper.
Do not use this setting if the ambient humidity is below 30% or ghosting may increase.
Note
This feature may not reduce ghosting for all types of paper. Before you buy a lot of paper, test a small
quantity to make sure that the paper is suitable.
 Density Adjustment
Increase or decrease the print density.