Panasonic DP-C406 Operating Instructions Manual page 13

No. Parameter
17 Fold Position(A4/LTR-
R)
Comments
Set the binding margin for booklet copy (A4/
Letter-R).
A4 / Letter-R (8.5x11)
Selective Item
-4.0 to +4.0 mm
Standard
Setting
0.0
13