Adobe 62000112DM User Guide - Page 492

ADOBE ACROBAT 3D VERSION 8 485 User Guide Note: Some print drivers process raster and vector art differently, sometimes resulting in color stitching. You may be able to minimize stitching problems by disabling some printer-driver-specific color-management settings. These settings vary with each printer, so see the documentation that came with your printer for details. (Illustrator only) Select Preserve Alpha Transparency (Flatten Transparency dialog box only) Preserves the overall opacity of flattened objects. With this option, as when you rasterize artwork using a transparent background, blending modes and overprints are lost but their appearance is retained within the processed artwork, along with the level of alpha transparency. Preserve Alpha Transparency can be useful if you are exporting to SWF or SVG, since both of these formats support alpha transparency. (Illustrator only) Select Preserve Spot Colors And Overprints (Flatten Transparency dialog box only) Generally preserves spot colors. It also preserves overprinting for objects that aren't involved in transparency. Select this option when printing separations if the document contains spot colors and overprinted objects. Deselect this option when saving files for use in page-layout applications. With this option selected, overprinted areas that interact with trans­ parency are flattened, while overprinting in other areas is preserved. The results are unpredictable when the file is output from a page-layout application. Preserve Overprint (Acrobat only) Blends the color of transparent artwork with the background color to create an overprint effect. About transparency flattener presets If you regularly print or export documents that contain transparency, you can automate the flattening process by saving flattening settings in a transparency flattener preset. You can then apply these settings for print output as well as for saving and exporting files to PDF 1.3 (Acrobat 4.0) and EPS and PostScript formats. In addition, in Illustrator you can apply them when saving files to earlier versions of Illustrator or when copying to the clipboard; in InDesign you can also apply them when exporting to SVG format; in Acrobat, you can also apply them when optimizing PDFs. These settings also control how flattening occurs when you export to formats that don't support transparency. You can choose a flattener preset in the Advanced panel of the Print dialog box or of the format-specific dialog box that appears after the initial Export or Save As dialog box. You can create your own flattener presets or choose from the default options provided with the software. The settings of each of these defaults are designed to match the quality and speed of the flattening with an appropriate resolution for rasterized transparent areas, depending on the document's intended use: [High Resolution] For final press output and for high-quality proofs, such as separations-based color proofs. [Medium Resolution] For desktop proofs and print-on-demand documents that will be printed on PostScript color printers. [Low Resolution] For quick proofs that will be printed on black-and-white desktop printers and for documents that will be published on the web or exported to SVG. Create a flattener preset You can save transparency flattener presets in a separate file, making it easy to back them up or to make them available to service providers, clients, or others in your workgroup. Once you create a custom flattener preset, you can edit it in PDF Optimizer. Flattener presets are stored in the same location as printer settings files: (Windows) \Documents and Settings\[current user]\Application Data\Adobe\Acrobat\8.0\Preferences (Mac OS) Users/[current user]/Library/Preferences/Acrobat/8.0