The Brightness adjustment allows you to adjust the overall brightness level of an image if it is
too dark or too bright. This adjustment changes the mid-range colors without affecting the
darkest or brightest areas of the image.
There are three settings.
Print with a brighter appearance.
Select this setting when you feel that the result is too dark.
Print at normal brightness.
Use this setting at first, and change the Brighter and Darker adjustments if needed.
Print with a darker appearance.
Select this setting when you feel that the result is too light.
The Brightness control is dimmed and disabled after selecting Use ICM for Color
How to Use the Printer Driver