Black Text and Graphics
The Black Text and Graphics option affects black text and vector graphics. When you set this option to Pure Black On, the black generated by applications (RGB=0, 0, 0 or CMYK=0%, 0%, 0%, 100%) is printed using black only.
With Black Text and Graphics set to Pure Black On, black text and line art are not misregistered, since only one colorant is used. This setting also eliminates blasting, which is an undesirable effect that occurs when excess amounts of toner, combined with certain types of paper stock, cause objects to spread beyond their defined boundaries.
For some jobs, we recommend setting Black Text and Graphics to Normal. For example, if a job includes gradient fills that use black, the Normal setting gives the best result.
If you set Black Overprint to Text or Text/Graphics, Black Text and Graphics must be set to Pure Black On.
The following table describes the behavior of Black Text and Graphics with black defined in different color spaces.
For more information, see Fiery Color Reference, which is part of the user documentation set.