Adobe Acrobat 8 3D - Manual (Page 479)

472 ADOBE ACROBAT 3D VERSION 8
User Guide
2 Do one of the following:
• To check for specific area coverage, use the pointer to hover over that area in the document window. Ink coverage
percentages appear in the ink list next to each ink name.
• To check for total document coverage, select Total Area Coverage, and choose a number from the pop-up menu
or type a percentage in the box.
You can adjust ink coverage by converting some spot colors to process colors using the Ink Manager.
View color warnings
Output problems can occur when a document’s colors are not reproducible on a particular press, or when rich black
is used unintentionally on type. To diagnose such color problems before handing off a PDF for high-end output, you
can use the various color warnings in the Output Preview dialog box. Pixels in areas that trigger the warning are
displayed in the warning color, which is identified by the swatch color next to the warning type.
Output Preview dialog box configured for viewing color warnings
1 In the Output Preview dialog box, select the profile from the Simulation Profile menu that describes the target
output device.
2 Choose Color Warnings from the Preview menu.
3 Select either or both of the following options:
Show Overprinting Indicates where on the page overprinting will appear in color-separated output. If you select
Simulate Overprinting in the Output panel of the Advanced Print Setup dialog box, you can also see overprinting
effects when you output to a composite printing device. This option is useful for proofing color separations.
Rich Black Indicates areas that will print as rich black—process black (K) ink mixed with color inks for increased
opacity and richer color. Rich-black objects knock out the colors beneath, preventing background objects from
showing through. This effect is usually desirable only for large, black, display type. In most cases, rich black is
undesirable for body type, and is usually the result of an error, such as using RGB instead of CMYK for the type.
To change the warning color used in the preview, select a color from the swatches color picker.