Consideraciones de Instalación

Settings and options

Note: To display JPEG2000 options, you must select Acrobat 6.0 (PDF 1.5) from the Compatibility menu on the

General tab.

• Choose Automatic (JPEG) or Automatic (JPEG2000) to determine automatically the best quality for color and grayscale images. (JPEG2000 is the new international standard for the compression and packaging of image data. For more information, see “Converting to JPEG or JPEG2000 format” in Complete Acrobat 6.0 Help.

Note: RIPs that consume PDF natively (that is, that can process PDF files without converting them to PostScript) do not

support JPEG2000. When JPEG2000 graphics are in a PDF file, they are re-compressed using other compression methods, such as JPEG or Run Length. If you need to remove JPEG2000 from a file, use PDF Optimizer (Advanced > PDF Optimizer).

• For monochrome images, choose CCITT Group 4, CCITT Group 3, ZIP, or Run Length compression. For descrip- tions of these compression methods, see Complete Acrobat 6.0 Help.

Note: In some cases, downsampling monochrome images is not appropriate in print production. If your document

contains a bitmap representation of a scanned halftone, downsampling may produce poor quality results.

Use the Anti-Alias to Gray option to smooth jagged edges in monochrome images. Choose 2 bit, 4 bit, or 8 bit to specify 4, 16, or 256 levels of gray. (Anti-aliasing may cause small type or thin lines to look blurry when using lower than 8 bit.)

Fonts settings

The Fonts tab options specify which fonts to embed in an Adobe PDF file, and whether to embed a subset of the font representing the characters used in the document.

Note: When you combine PDF files with the same font subset, Acrobat attempts to combine the font subsets. This is done

Note: It is recommended that you select Embed All Fonts to ensure that others can view and print your PDF files using the same fonts. If your PDF file will not be edited by someone later, subset your fonts to reduce file size. By entering a value of 100%, you ensure that only the subset of the font that is used in the document will be embedded.

Embed All Fonts Embeds all fonts used in the original file. Font embedding is highly recommended for all typical print output and is required for PDF/X compliance. (See “About PDF/X” in Complete Acrobat 6.0 Help.)

Subset Embedded Fonts When Percent of Characters Used Is Less Than Specifies a threshold percentage if you want to embed only a subset of the fonts. For example, if the threshold value is 35, and more than 35% of the characters are used, Distiller embeds the entire font.

Note: For some special fonts, such as dingbat fonts or pi characters, Distiller may fully embed the font regardless of the

subset value entered. This is done to ensure the proper characters are used in viewing and printing the PDF file. When Embedding Fails Specifies how Distiller responds if it cannot find a font to embed when processing a file. You can have Distiller ignore the request and substitute the font, warn you and substitute the font, or cancel processing. The best practice for PDF files meant for print is to cancel processing and create a warning. The When Embedding Fails option also applies to fonts that have a Do Not Embed flag.

Always Embed To embed only certain fonts, move them into the Always Embed list.

Never Embed Move fonts that you do not want to embed to this list. If necessary, choose a different font folder from the pop-up menu to display the font in the font list. Ctrl-click (Windows) or Command-click (Mac OS) to select multiple fonts to move.

Add Name If the font you want is not in a font folder, click Add Name, enter the name of the font, select Always Embed List (or Never Embed List), and click Add.

Note: Acrobat 6.0 Professional disallows embedding of fonts with certain vendor settings, such as the non-embed flag.

Fonts that are unavailable for embedding are preceded by a padlock icon. If you select a padlocked font, the nature of the unavailability is described in the explanation area of the Adobe PDF Options dialog box.

Remove Removes a font from the Always Embed or Never Embed list. This does not remove the font from your system; it just removes the reference to it in the list.

Note: Adobe Acrobat 6.0 does not include the Times, Helvetica, and ZapfDingbats fonts that have been included in

previous versions. If you want these fonts to be viewed and printed in your PDF file, embed the fonts.

For a description of specific font parameters, see Table 3.6, “Font embedding and subsetting parameters,” on page 73 of the Distiller Parameters Guide in the Acrobat Distiller Help menu. For additional information on Type 1, Type 3, Type 42, and CID-keyed fonts, see Chapter 5, “Fonts,” in the PostScript Language Reference, Third Edition. You also can find additional documentation on fonts on the Adobe Solutions Network Web site at

www.adobe.com/asnprint/tech/type.

Note: Distiller 5.0 and 6.0 can embed characters from an OpenType® font used in a document, but cannot embed the

OpenType font itself; the font is converted to CID TrueType or CID Type 1. Color settings

You can control whether Distiller preserves custom halftoning, overprinting, and transfer function information in the PDF file. You can also specify which ICC profile to use for color conversion. See “ICCBased Color Spaces” in Section 4.5.4 of the PDF Reference, Third Edition, for details on profiles.

Whether you are using color-management information in the PostScript file, using Distiller color-management settings files, or defining custom settings, you set all color-management information for Distiller on the Color tab of the Adobe PDF Settings dialog box.

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