Although conventional software cannot use this icc, this icc is also a very important icc. It mainly uses some color batch processor software, which is nested in the color management workflow to provide conversion for different CMYK to CMYK.
Another: color management batch processor is mainly to deal with some complex source tiff, jpeg, PS, EPS, PDF file formats, automatically unified to the specified output device characteristic file, because of its high price, mainly some large output proofing Centers and printing plants are using it, such as PraxisoftICCAutoflow software and GretagMacbethiQueue software, as shown in the picture (the picture is a trial version, the genuine version is now 140):
The main function of the device connection characteristic file is the conversion of CMYK to CMYK. Usually, the conversion method between them is CMYK—Lab—CMY, and then the K version is calculated. The biggest disadvantage of this conversion is that some places that need to maintain K100, such as the color blocks of text and pure black background, will be changed to a color mixed with K and other colors, which is very unsuitable for printing and output registration, that is, color performance of.
We can experiment in photoshop, such as converting a K100 color block from American pre-press CMYK to Japanese pre-press icc, the original K100 color block will become a four-color color block, as shown in the figure:
The device connection characteristic files generated by ProfileMaker and MonacoProfiler can only specify the K100 black version. For other images that need to maintain CMY and maintain 100%, when doing CMYK-CMYK conversion, there is no way to do it (especially 100% of CMY made by vector software such as Illustrator, we often do not want to change after conversion).
And another software for making device connection characteristic files: Link-o-lator, you can define all the original 100% conversion of CMYK to maintain 100% after conversion and set different dot compensation, as shown in Figure 11:
Although the device connection characteristics file is currently rarely used in everyone's daily work, as the color management becomes more in-depth and everyone has higher requirements for color, it will definitely arouse everyone's attention gradually and will gradually change from only a few color batches. Processing software and RIP software support are transformed into a state supported by most application software. At present, only the free Colorsync plug-in developed by Apple for Photoshop can support DeviceLink through import and export.
Color space conversion characteristics file (ColorSpaceConversion)
The color space conversion characteristic file is mainly used for conversion between device-independent color spaces, such as conversion from Lba to LUV. Such characteristic files can be embedded in image files, but such characteristic files are rarely used.
Abstract feature file (Abstract)
Abstract characteristic files are used for color conversion of images in the device connection space (such as Lab). In practical applications, this situation is rare, and there is basically no software that supports this conversion.
Named color profile (NamedColor)
The named color characteristic file is used to support named color systems, such as Pantone, focoltone and other color systems, to establish the relationship between the name and color value of these color systems and device-independent Lab color spaces, and at the same time, speak these color names through Lab Correspondence with the color value of the equipment can ensure that the named color system can be copied through the conventional equipment as much as possible.
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