Oki S900 - Manual (Page 25)

USING THE S900 AS A COPIER > 25
ADJUSTING PRINT DENSITY
The Scancopier is preset to the normal level of print density.
If your original document comes with a lighter or darker contrast, you
can improve the copy quality by using the density adjusting feature.
1. Use the down arrow button below the LCD display (if required)
to move the cursor down to the Density field.
2. Indicate your required setting in the LCD display by using the
left (for lighter) or right (for darker) arrow buttons.
NOTE
After you have made your copies, the settings you have just made will
remain in the LCD display for three minutes. After three minutes, the
machine will automatically return to the stand-by display and user
default settings.