Which of the following options are used to add black to neutral areas currently defined using cyan, magenta, and yellow? Each correct answer represents a complete solution. Choose all that apply.
- Ink limits
- Undercolor Addition
- Undercolor Removal
- Gray Component Replacement
Answer(s): C,D
Explanation:
In the Custom CMYK dialog box, you can customize several settings under Separation Options. Next to Separation Type, you can select GCR or UCR, which are the two types of separations. GCR and UCR are different techniques for adding black to neutral areas currently defined using cyan, magenta, and yellow. GCR stands for Gray Component Replacement. Select GCR to specify how the neutral areas made up of cyan, magenta, and yellow are replaced with black ink. UCR stands for Undercolor Removal. When you select UCR, you don’t have as much control over conversion of neutral areas from cyan, magenta, and yellow percentages to black. UCR specifies that only the darkest areas should be converted to black. Answer option B is incorrect. When you specify GCR separation, you can specify an undercolor addition value in the UCA Amount box. The UCA Amount value you specify leaves a small C, M, Y percentage, along with added black, in the shadow areas when you’re using GCR to create more saturated blacks. Answer option A is incorrect. To avoid too heavy an application of black ink, you can limit the amount of it used during printing; you can do this by specifying a lower value in the Black Ink Limit box. In addition to limiting the amount of black ink, you might need to limit the combined amount of all four inks for an image’s darkest areas to avoid over-saturating the paper with too much ink. You can specify a value to limit the combined cyan, magenta, yellow, and black inks in the Total Ink Limit box.