User`s guide

Thickness Adjustment Lever
You need to change the position of the thickness adjustment
lever when you print on thick paper—such as envelopes or
labels—or if your documents smear, as shown in the following
table.
Paper type Thickness adjustment lever position
Plain or special paper 0
Transparencies 0
Envelopes or labels +
Previously smeared documents +
plain paper
setting
thick paper
setting
3-4
Paper Handling