IBM 1800409-001A - Manual (Page 182)

2. Locate the adjustment dials inside the printer to the front left
(fig. 5.6).
3. Turn the density adjustment dial to the left (counterclockwise)
to lighten the print or to the right (clockwise) to darken the
print.
Y
M
C
- +
K
- +
- +
- +
Fig. 5.6 Print Density Adjustment Dials
Chapter 5
5 - 1 6 P r i n t M e d i a a n d D a i l y O p e r a t i o n s