GMG ColorSever 4.5

Automatic color conversions for more efficient workflows

The processes of color conversion, scaling, sharpening, separation, and optimization of pixel and PDF data can be executed fully automatically via hotfolders using GMG ColorServer.

CMYK-to-CMYK conversion
One of the outstanding functions of GMG ColorServer is its fully automatic CMYK color conversion. This is used to convert CMYK data from one standard – industry standards, such as GRACoL, PSR, ISO, and 3DAP, or in-house standards – to another industry or in-house standard and allows incoming image data that were received from different sources to be “normalized” to a single, uniform standard. Similarly outgoing data can to be optimized for multiple output processes, respective of the specific printing process or condition. Besides color conversion GMG ColorServer offers the possibility to reseparate the entire document. With the reseparation of image and vector objects in CMYK documents it is ensured that the printed results are separated homogeneously and consistently and thus offer better print results.

4D color management from GMG ensures identical printing results
GMG ColorServer was developed by GMG in collaboration with leading printing companies and publishers and is based on GMG's 4D color management. The software computes the original and target values directly into CMYK – without the detour via a LAB color space. This way the integrity of the black channel in the original data is retained in its exact proportions in the transformed, target CMYK color space, ensuring that the visual impression of the output remains identical. An ICC device profile approach cannot lead to the desired result considering that the color space conversion used by the CIELab is three-dimensional and lacks information about the black channel generation (fourth color) required for accurate color conversions.

RGB-to-CMYK conversion
RGB files are often delivered unprepared for printing. The RGB files are placed in a hot folder and processed according to the parameters defined for this hot folder e.g. scaled, sharpened and separated. The GMG separations are much smoother compared to those made with ICC profiles leading to less problems during printing. The separations generated by GMG are far more accurate than the ones produced using ICC, with less problems during the printing process.

RGB-to-RGB conversion
RGB files may be converted within different standard RGB color spaces like Adobe RGB 1998, ECI-RGB or sRGB. This is particularly useful in standardizing RGB data in prepress and as well web and display-based applications.

PDF-to-PDF conversion
In addition to the handling of pixel data, it is also possible to manipulate PDF files for both CMYK-to-CMYK and RGB-to-CMYK conversions. When converting PDF files, the RGB images within the PDF file can be automatically scaled, sharpened and separated. It is not necessary to revert to image and layout applications during the document creation process.