Adobe 62000236 Extended User Guide - Page 483

USING ACROBAT 9 PRO EXTENDED 477 Print production tools 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 transparency 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. Page-Level Transparency Blending Color Space (Acrobat only) Specifies the transparency blending color space. Click Change to modify the blending color space for all pages in the document, the selected page, or a range of pages. The blending space enables objects of multiple color spaces to blend when interacting transparently. 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. You can also apply them when saving and exporting files to PDF 1.3 (Acrobat 4.0) and EPS and PostScript formats. In Illustrator, you can apply them when saving files to earlier versions of Illustrator or when copying to the clipboard. In InDesign, you can apply them when exporting to SVG format. In Acrobat, you can apply them when optimizing PDFs. These settings also control how flattening occurs when you export to formats that don't support transparency. Choose a flattener preset in the Advanced panel of the Print dialog box or the 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 default settings are designed to match the quality and speed of the flattening with an appropriate resolution for rasterized transparent areas: [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 are printed on PostScript color printers. [Low Resolution] For quick proofs that are printed on monochrome desktop printers and for documents that are published on the web or exported to SVG. Create a flattener preset You can save transparency flattener presets in a separate file. Using a separate file makes 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 XP) \Documents and Settings\[current user]\Application Data\Adobe\Acrobat\9.0\Preferences Last updated 9/30/2011