Advanced panel
The Advanced panel provides control over OPI workflows, conversion of gradients, and transparency flattening so that you can create output compatible with most output devices.
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O PI se c t ion
Options in this section enable support for OPI (Open Prepress Interface) workflows. For these options to work properly, high-resolution versions of linked graphics must be available where the OPI server expects to find them. The OPI section contains the following options:
OPI Image Replacement: Allows InDesign to act as an OPI server, so that it will replace linked graphics in placed EPS files. This is useful when you need to output using high-resolution data instead of low-resolution OPI placeholders (such as when flattening transparency). Keep the following in mind when turning on OPI Image Replacement:
• When placing an EPS file, the Read Embedded OPI Image Links option in the EPS Import
Options dialog box must be selected to be able to replace the OPI links when printing.
• InDesign must have access to the graphics linked by the OPI comments. If the highresolution versions are not available, InDesign preserves the OPI links and includes the low-resolution proxy in the output stream.
• To have an OPI server resolve OPI links later in the workflow, leave this option deselected.
Omit for OPI: Allows selective omission of imported graphics for later OPI replacement based on the graphic’s file type—EPS (encapsulated PostScript graphics), PDF (Acrobat files), or Bitmap Images. ( Photoshop EPS files are considered to be EPS files even if they contain only bitmap data.) Selecting one of these options omits imported files of that type from the output stream, instead producing OPI comments for later handling by an OPI server. The print service provider path must have access to the original high-resolution version of the image on a server at replacement time, otherwise the graphic will be missing on the layout. This option is most useful for large graphics files that may be difficult to store or transmit with the InDesign file.
Note: Special care must be taken when using OPI images with transparency features.
Flattening transparency at imagesetter resolution requires high-resolution image data.
For information about OPI workflows and transparency, see “Flattening OPI workflows” on page 55.
Trans pare nc y Fl at te ne r se c t ion
This section allows the application of a transparency flattener preset for the job. Note that transparency on each spread can be flattened differently by the customer or the print service provider using spread overrides. To apply a single flattener preset to the entire document, click the Ignore Spread Overrides option. For more information, see “Flattening
Transparency for High-Resolution Output” on page 50.
Preset: Specifies the flattener preset to be applied to transparency in the file. Transparency flattener presets in the list are those defined in the Edit > Transparency Flattener Presets dialog box. Typically, service providers creating final high-resolution output should use the built-in High Resolution preset or a flattener preset customized for the shop’s high-end output requirements.
• Ignore Spread Overrides . Makes the transparency flattener preset specified in the Print dialog box override any spread overrides (flattener settings applied to specific spreads).
This ensures that all transparency throughout the document is handled using a known flattener preset, and can be useful when it is suspected that the customer’s use of spread overrides may not be appropriate for high-end output.
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