You can change the default values of the basic black controls for your printer.

1. Click the Black controls tab.
2. Set the following values by moving the slider for each:
   • Maximum black ink: Sets the total amount of ink that is allowed for black. You might reduce this value from 100% if that value produces undesirable effects, such as an unwanted difference between black and other colors. The default setting is a value appropriate for the type of printer being profiled. We recommend you start with the default.
   • Black start : Sets the minimum percentage of ink at which black is introduced into the mix of inks making up a specific shade of color. You might adjust this value to adjust the stability of the gray balance or to reduce graininess in highlights when the black screen is grainy.
   • Black generation: Controls the rate at which black is added on the neutral axis from the Black Start point. A high slider value adds black at a high rate. A low slider value adds black at a slower rate.
   • Black width: Controls how the black ink on the neutral axis is extended into the chromatic colors. Low values of black width hold the neutral-axis black amounts close to the neutral axis of the profile, while high values of black width allow the neutral-axis black amounts to extend outward into the gamut.
3. Click OK or one of the other tabs.