"Device Colors / DeviceLink" Tab
You define the settings for device-dependent colors in this tab.
Color space conversions are performed with the help of ICC profiles. In this group, you select the source profiles that you will use for conversion to the device-independent Lab color space. Conversion to the target color space is based on the set Press Profile ("Color Management" tab > "Output").
ICC press profiles are created during installation:
•As of Windows 7 in: "C:\ProgramData\Heidelberg\PDFToolbox\ICCProfiles..."
•To find the files on a Macintosh, go to "...For All Users\Heidelberg\PDFToolbox\ICCProfiles".
This directory contains the ICC profiles included in the shipment.
By default, after installation, these ICC profiles are used for automatic color matching.
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Note: You can supplement these supplied ICC profiles with your own profiles by copying the relevant files to the above-named directory. |
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Click this button to display a list box (the appropriate profile folder opens automatically) where you can select the ICC profile you want. |
If you are working in a Prinect Prepress Manager environment, you can access its resources there. Path: "\\Prepress Manager Server\PTConfig\SysConfig\Resources\ICC Profiles"
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Note: You cannot perform a conversion to the target color space if no profiles are selected. |
During the import of an ICC profile, the system checks whether it matches the selected color space. An error message is issued if it does not.
Select an ICC profile for the conversion of images and graphics.
To convert the RGB images in the PDF file select an ICC profile that is defined by the "DeviceRGB" color space.
To convert the RGB graphics (also text and shade) in the PDF file, select an ICC profile that is defined by the "DeviceRGB" color space.
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Note: For RGB graphics from Office documents, it may be advantageous to use HEIDELBERG's "RGB2CMYK.icc" "link profile". This profile allows a simple conversion from "RGB" to "CMYK" with a PostScript standard that makes it possible to keep existing corner colors as they are. |
CMYK + "All"
Select an ICC profile for conversion.
To convert the CMYK images in the PDF file select an ICC profile that is defined by the "DeviceCMYK" color space.
To convert the CMYK graphics (also text and shade) in the PDF file select an ICC profile that is defined by the "DeviceCMYK" color space.
Select an ICC profile for conversion.
Gray + "Image"
To convert the gray images in the PDF file select an ICC profile that is defined by the "DeviceGray" color space. When you enabled the "CMYK Image" option, you can also apply the CMYK profile selected there.
To convert the gray graphics (also text and shade) in the PDF file select an ICC profile that is defined by the "DeviceGray" color space. When you enabled the "CMYK Graphic" option, you can also apply the CMYK profile selected there.
Select an ICC profile for conversion.
Multicolor + "Image"
To convert the multicolor images in the PDF file select an ICC profile that is defined for a certain DeviceN color space, e.g. Hexachrome. In rare cases, a document can have several different multicolor color spaces. In such cases, you can only convert the images of one of these color spaces. The profile you select determines which type of multicolor image will be converted.
Multicolor + "Graphic"
To convert the multicolor graphics (including text and shading) in the PDF file, select an ICC profile that is defined for a certain DeviceN color space, e.g. Hexachrome.
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Note: "Rendering Intent" is dimmed if a Device Link profile is selected. Selection of a rendering intent is superfluous here because it is already described in the Device Link profile. |
More details can be found in Rendering Intent.
More details can be found in Black point compensation.
During a CMYK-to-CMYK or Gray-to-CMYK image or graphic conversion, black is preserved depending on what you set:
•Special (default)
C, M and Y are converted to CMY, K is converted using special methods. Extensive tests have shown these to be the best. The "Special" parameter eliminates most of the problems in complex files. This parameter is only available in the HEIDELBERG CMM.
•Base
C, M and Y are converted to CMY, K is converted to the target density with the help of a gradation curve.
•K=K
Only C, M and Y are converted to CMY, K is not converted.
Black remains identical.
•In addition to keeping black, you can set that the primary and secondary colors will also be kept. There are the following modes in this case:
·"Primaries (solid)"
Only primary colors with a value of 100% are kept,
e.g. 100% magenta (primary color)
·"Primaries (all)"
All primary colors are kept,
e.g. 70% magenta (primary color)
·"+ Secondaries (solid)"
Primary and secondary colors with a value of 100% are kept,
e.g. 100% magenta (primary color), 100% yellow and 100% cyan (secondary color)
·"+ Secondaries (all)"
All primary and secondary colors are kept,
e.g. 70% magenta (primary color), 60% yellow and 60% cyan (secondary color).
Color Management for Overprinting Device CMYK Graphics
Only active if "CMYK" is enabled.
You can also use Color Management for overprinting Device CMYK graphics.
Color Management for Subsets of Device CMYK
Only active if "CMYK" is enabled.
You can also use Color Management if single channels are missing.
Color Management for Device CMYK with Active Color Blending
Only active if "CMYK" is enabled.
Color Management can be disabled with active Color Blending because it can cause visible color changes in rare cases.
Color Management for CMYK Spot Colors Mapped to CMYK
Only active if "CMYK" is enabled.
Color Management is disabled for spot colors mapped to CMYK.
