Adobe ACROBAT 3D Manual page 635

Previewing and applying transparency flattening
You use the preview options in the Flattener Preview window to detect objects in a PDF document
that are transparent, as well as objects that will be affected by transparency flattening. Transparent
content is highlighted in red, while the rest of the artwork appears in grayscale. You can use this
information to adjust the flattening options before you apply the settings to the document.
The Flattener Preview dialog box displays a preview of the current PDF page using preview and flattener
settings.
To preview transparency flattening:
1. Choose Tools > Print Production > Transparency Flattening.
2. To magnify the preview, click in the preview area. To pan the preview, press the spacebar and drag.
To return to the original settings, click Refresh.
3. Select options from the Highlight menu. The availability of options depends on the content of the
artwork and the flattening settings in the Transparency Flattener panel of the Advanced Print dialog
box:
Rasterized Complex Regions previews the areas that will be rasterized for performance reasons (as
determined by the Raster/Vector slider). Keep in mind that the boundary of the previewed area has
a higher probability of producing stitching problems (depending on the print driver settings and the
rasterization resolution). Select Clip Complex Regions to minimize stitching problems.
Transparent Objects previews the objects that are sources of transparency, such as transparent
objects, objects with blending modes, and opacity masks. In addition, styles and effects may contain
transparency, and overprinted objects may be treated as sources of transparency if they are involved
in transparency or if the overprint needs to be flattened.
All Affected Objects previews all objects that are involved in transparency, including transparent
objects and objects that are overlapped by transparent objects. The previewed objects are affected
by the flattening process--their strokes or patterns are expanded, portions of them may get
rasterized, and so on.
Expanded Patterns previews all patterns that will be expanded if involved in transparency.
Outlined Strokes previews all strokes that will be outlined if involved in transparency or because
Convert All Strokes to Outlines is selected.
4. Drag the Raster/Vector Balance slider or enter a value to specify the degree of rasterization in
complex areas of the artwork.
5. Specify a rasterization resolution for rasterizing complex line art and text, and gradients and meshes.
6. Select flattener options. (See
7. At any time, click Refresh to display a fresh preview version based on your settings.
To apply the flattener settings to the Adobe PDF document:
1. In the Flattener Preview dialog box, specify flattener settings.
2. Choose one of the following to select affected pages:
All applies the settings to all pages in the document.
Current Page applies the settings to the page that is visible in the current view.
Pages Range From/To applies the settings to a range of pages. Pages are numbered starting with 1.
3. Click Apply. This operation cannot be undone.
Related Subtopics:
Transparency flattener options
Transparency flattener options.)