Adobe InDesign CC 2015 - Manual (Page 615)

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Printing
Last updated 6/6/2015
Note: InDesign cannot always change the data format used by EPS or DCS graphics files. If you experience problems
sending data as Binary, try changing the data format of EPS or DCS graphics in the source application instead.
Options for omitting graphics
The OPI options in the Advanced area let you selectively omit different imported graphics types when sending image
data to a printer or file, leaving only the OPI links (comments) for later handling by an OPI server.
OPI Image Replacement Enables InDesign to replace low-resolution EPS proxies of graphics with high-resolution
graphics at output time. For OPI image replacement to work, the EPS file must contain OPI comments that link the
low-resolution proxy image to the high-resolution image. 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 export file. Deselect this option to have an OPI server replace OPI-linked graphics later in the
workflow.
Omit For OPI Lets you selectively omit different imported graphics types (EPS, PDF, and bitmap images) when sending
image data to a printer or file, leaving only the OPI links (comments) for later handling by an OPI server. The
comments contain the information needed to locate a high-resolution image on an OPI server. InDesign only includes
the comments; the service provider must have access to the original high-resolution image on a server at replacement
time. The Omit For OPI option doesn’t apply to embedded graphics.
More Help topics
About preferences and defaults
Import options for graphics
Overprinting
About overprinting
If you have not changed the transparency of your artwork with the Transparency panel, the fills and strokes in the
artwork will appear opaque, because the top color knocks out, or cuts out, the area underneath. You can prevent
knockout by using the Overprint options in the Attributes panel. After you’ve set your overprint options, you can
preview the overprinting effects on-screen.
InDesign also has overprint simulation, which is useful for simulating the effects of overprinting spot and process inks
on a composite printing device.
Black ink applied to text or native InDesign objects is overprinted by default to prevent misregistration of small black-
type characters positioned over color areas, or of color areas outlined with black lines. You can change black ink settings
using Appearance Of Blackpreferences.