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.
The Advanced panel provides control over workflows requiring OPI or flattening of transparency.
OPI area
Options in this area 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 area contains the following options:
OPI Image Replacement: Enables InDesign to act as an OPI server, so that it will replace linked graphics in placed EPS files. This option 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 high-resolution 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: Enables 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 61.
Adobe InDesign CS2 Printing Guide for Prepress Service Providers
95
