Faulty channel mapping for projects with white channel
If a project contained a white channel, the synchronization between GMG OpenColor and GMG ColorProof did not work properly. For jobs with a dynamic profile, none of the GMG OpenColor channels were recognized anymore in that case.
General instability and application crashes
GMG OpenColor crashed sporadically when processing spot color data, measuring new characterizations or updating separation rules.
Double-Byte OS: Loading measurement files from specific locations
On Japanese, Korean, and Chinese operating systems, measurement files with double-byte characters in their path name could not be loaded into GMG OpenColor.
Program crash on recalculating separation rules
The app crashed when recalculating exisiting separation rules. Profiles that had been calculated incompletely up to that point were grayed out afterwards and displayed an error message. The error has been fixed, and all pending calculations will be automatically catched up the next time that you add a spot color and start the recalculation.
Inconsistent layouts upon manual test chart adjustments
When manually changing the test chart size, input via the arrow keys resulted in a different patch arrangement than direct input via the keyboard, although the same value was chosen.
Do you have pending calculations for older separation rules?
These calculations will be done automatically the next time you add a new spot color and start the separation rules update. The very first recalculation in this version may thus take a little longer. You can continue working during this time and follow the progress by looking at the main menu's tasks icon at the top right.
For the creation of prototype proofs on virtually any substrate, GMG OpenColor is directly connected to GMG ColorProof and will deliver custom calibration sets and proof profiles. This enables a fast and easy creation of the color space based on spectral color information.
Simply add a new spot color to your spot color library (on characterization level) and don't worry about the rest anymore.
GMG OpenColor will notify you with the option to Update if the spot color library is used in at least one set of Separation Rules.
After you clicked Update, GMG OpenColor will automatically recalculate all depending Separation Rules.
GMG ColorServer will automatically synchronize all depending spot color libraries (in case the automatic synchronization has been activated in GMG ColorServer).
This feature includes only the recalculation of Separation Rules. It does not affect the recalculation of profiles. The recalculation is triggered only when you change the scope of available spot colors in the spot color library (on characterization level), i.e. add a new spot color, delete a spot color, activate and deactivate a spot color. After changing colors on project level, you will still need to manually start the update.
Please follow the link for more information: Changing colors
As spot color characteristics depend on the printing technology and media type, you can predefine the Target Mode and Target Gradation for each combination of printing technology and media category.
Example: Default settings for new spot colors that will be added to a characterization of a Digital Printing process.
Please follow the links for more information:
The Tasks dialog box shows the current progress of profile calculations. You can still edit your projects or use any other function, for example, start another profile calculation. You can move it anywhere you like, for example, on a second screen. When you close GMG OpenColor, the Tasks dialog box will also be closed automatically.
- Show a true and reliable reference to your customers.
- Decide which press and which substrate are best suited for a job.
- Use the ColorBook for process control in the press room.
- Optimize the print quality in line with the capabilities of each machine.
For more information, please follow the links:
You can activate the option at the project level. The paper structure simulation will be automatically added to each proof profile (ContoneProof as well as DotProof) created for this project, including dynamic profiling.
You can also add a paper structure simulation directly to an already existing proof profile. Recalculation of the profile is not required.
GMG OpenColor will embed the selected Paper Pattern File into the calculated profile. GMG ColorProof will print the proof without any additional file required.
For more information, please follow the links:
The option Generate Preferably CMYK introduced in 2.4.1 has simply been moved to the Controlled Ink Reduction options and will still work the same as before.
The previous options Moderate Reduction and As Few Inks As Necessary have been unified to Custom Reduction. For Custom Reduction, you can now set your own tolerance. In case you used one of the obsolete options to calculate separation rules, the selected option will be shown and might still be used. You will not be able to select one of the obsolete options if it is not already selected.
Please follow the link for more information: Controlled Ink Reduction
The GMG OpenColor Connector enables MeasureColor software to import GMG OpenColor project colors including both process color (project inks) and spot color libraries. Imported colors may be saved in the MeasureColor libraries and used across multiple jobs where those colors will be measured in order to manage the quality of the print run.
Benefits:
- Use the same targets for proofing and print production control to ensure consistent and reliable print results.
- No extra work—target values are extracted from already existing profiles or spot color libraries.
- Save time and avoid error prone workarounds such as measuring target values from a proof.
List of projects on the connected (and selected) GMG OpenColor server in MeasureColor.
Please follow the link for more information: Using the GMG OpenColor Connector with MeasureColor
You can tune the opacity of the White ink with the White Ink Level.
Please follow the link for more information: Prototype Proofing
Creating a DotProof profile can be quite an effort as optimizing the profile quality often requires several print outs and measurements of test charts. To avoid iterating a profile again from scratch, you will now be able to directly edit the color curves of the profile, for example, to match the halftone proof closer to the contone proof, or in case something in the printing process has slightly changed.
Just click the Edit button on the right side of the DotProof profile to apply Dot Gain Corrections.
The Dot Gain Corrections feature is available only for DotProof profiles created with the new GMG OpenColor version.
Please follow the links for more information:
Each project is already preconfigured in compliance to the official print standard, including the characterization data and the new spot color library PANTONE® Solid Coated v4.
You can use the projects right away to calculate proofing or separation profiles for these print standards. In GMG SmartProfiler, these projects can be used as input color spaces for profiling digital presses.
The previous sample projects have been removed from the installer, i.e. will not be installed anymore. If they are not in use, they will be removed from the database during the update. If a sample project is in use, it will not be removed. In this case, we recommend that you manually replace it with the corresponding new project.
The new spot color libraries PANTONE® Solid Coated v4 and PANTONE® Solid Uncoated v4 match the latest versions of PANTONE® Coated & Uncoated formula guides. Previous versions of PANTONE PLUS coated and PANTONE PLUS uncoated in the database are considered outdated.
You will be able to use X-Rite i1Pro3 Plus and i1iO Generation 3 Plus Table to measure color patches and test charts.
The large aperture results in large color patches (16 mm). As the test chart size is limited by the i1iO table, the number of test chart pages will be increased when using the i1iO table.
When the optional polarization filter is used, you will need to select the Device Type Plus-M3 to activate M3 measurement condition in GMG OpenColor. With the filter, the patch size is even larger (20 mm x 16 mm), resulting in larger test charts (manual measurement) or more pages (i1iO table).
Please refer to the manufacturer's website to learn more about the new device:
- GMG ProofPaper matte 140, 1200x1200 dpi 11c Matte Black
- GMG ProofMedia studio OBA matte 150, 1200x1200 dpi 11c Matte Black
- GMG ProofMedia premium semiMatte 250, 1200x1200 dpi 11c Photo Black
- GMG ProofMedia premium gloss 250, 1200x1200 dpi 11c Photo Black
- GMG ProofPaper semiMatte light, 1200x1200 dpi 11c Photo Black
- GMG ProofMedia premium OBA semiMatte 250, 1200x1200 dpi 11c Photo Black
- GMG ProofMedia studio OBA semiMatte 200, 1200x1200 dpi 11c Photo Black
Please follow the link for more information on the supported proofing conditions.
For using DotProof profiles created in GMG OpenColor, you will need GMG ColorProof version 5.12.1.309 or higher.
If the option Generate Preferably CMYK is selected, colors will be separated into CMYK only, without the use of additional output inks, if the color deviation is not bigger than the set tolerance. Only if the deviation is bigger than the entered delta E, GMG OpenColor will use all available output inks.
This option has been changed in version 2.4.2. Please follow the link for more information: Controlled Ink Reduction
- High-quality color transformations matching the original colors as intended by the creator of the document
- Excellent and stable gray balance
- Full dynamic range of the shadows of the target color space
- Smart: If the difference between source and target color space is small, gamut mapping will not be applied automatically.
The Gray Adjustment to Target Media is important in cases where the target printing condition uses a substrate with a different white point than the output intent of the document. You can either preserve the original colors, thus "ignoring" the new paper tint, or adapt the design to the target paper tint.
Black Point Compensation (BPC) preserves image detail in the shadows by minimizing clipping in the shadows. You can decrease BPC to minimize changes to in-gamut colors in the shadows and to increase the saturation. Deactivate BPC if you need a color as deep black as possible or to avoid color shifts. For most Packaging applications, it is recommended to decrease BPC or set it to 0 to avoid any change of saturated or dark colors (with the risk of clipping).
Use Gamut Expansion to exploit the full available color space of your printer. Gamut Expansion is useful for all printers with a large color space, with CMYK only or with additional inks. Colors will be boosted to the edge of the available printer color space.
With the option Allow Additional Inks in Overprints, you can use additional inks for overprinting colors, even though the separation rules do not allow these inks for the single colors.
Please follow the link for more information: Further options for Multicolor Project to Multicolor separation profiles
- PSR MFv2 M1
- PSR LWCv2 M1
- PSR LWCplusV2 M1
- PSR SCplusV2 M1
- PSR SCv2 M1
Please follow the link to find out more about the PSR standard update: http://www.eci.org/en/colourstandards/gravure
- Epson SC-Px500, GMG ProofPaper matte 140, GMG ProofMedia studio OBA matte 150, 1200x1200 dpi 11c Matte Black
- Epson SC-Px000, GMG ProofMedia studio OBA matte 150, 720x1440 dpi 10c Matte Black
- HP Designjet Z3200, GMG ProofPaper matte 140, 1200 dpi 10c Matte Black
Please follow the link for more information on the supported proofing conditions.
If you selected Moderate Reduction or As Few Channels as Necessary, GMG OpenColor will check for each color, whether it is possible to reduce the number of output inks without exceeding a delta E tolerance.
This option has been changed in version 2.4.2. Please follow the link for more information: Controlled Ink Reduction
GMG OpenColor is the first profiling software to accurately predict the overprinting behavior and color interplay with only a minimum of measurement data and test charts required. This is possible by combining spectral measurements with a patented prediction engine that applies mathematical models of printing processes to predict what will happen on the press. The centralized data management and the simple user interface make it easy for beginner and expert alike to create high-quality profiles.
With GMG ColorProof, you can easily create contract proofs on inkjet proofers. GMG ColorServer enables you to automate the separation and to calibrate your digital press. Separation profiles created in GMG OpenColor can also be used in the third party application PACKZ. GMG ColorPlugin extends the usage to Adobe Photoshop.
You will be able to use X-Rite i1Pro3 and i1iO Generation 3 Table to measure color patches and test charts.
Please refer to the manufacturer's website to learn more about the new device:
- Connect from any browser in your network
- Export target values from your GMG OpenColor projects
- Check spot color separation values upfront
- Monitor all profile calculations currently in progress
Keeping colors consistent throughout the entire creation and printing process is always a challenge for everyone involved, especially when spot colors are used in the design. Particularly in Expanded Color Gamut (ECG) or digital printing, an accurate separation of the print data is important. GMG OpenColor calculates the color definition that will provide the best match for each printing condition and with GMG OpenColor RemoteClient, all persons involved in the process can easily access that information.
All employees involved in the print job order management process can see exactly which inks are required to reproduce a specific spot color. Color matches and out-of-gamut colors, which cannot be accurately reproduced in the target printing process, can easily be checked and communicated upfront. Prepress operators can simply transfer percentage values from the Separation Rules defined in the project to their artwork editor, and printers can use exported target values of a project to use them in their press room tools for color control.
GMG OpenColor RemoteClient in a browser. GMG OpenColor RemoteClient will show all finalized and published projects. You can use the search bar to find a specific project.
Please follow the link for more information: Access your Project Data over the Browser Using GMG OpenColor RemoteClient
You can click Proceed to Separation to skip the Proofing Condition and Finalize steps and proceed directly with the separation.
Users with an OpenColor Separation Only license benefit most from this feature. In this case, the Proof tabbed page has been renamed to Press Condition. The Proofing Condition and Finalize steps will not be visible.
Please follow the link for more information: Calculate Proof Profile or Proceed with Separation
GMG OpenColor 2.4 offers the following preinstalled output conditions for use with JetComp films:
- Epson_SCS80600_JetComp8502ClearPoly-9c+W-Reverse-720x1440dpi
- Epson_SCS80600_JetComp8508MetallizedPoly-9c+W-720x1440dpi
You can use each output condition for ContoneProof as well as DotProof. Please follow the link for more information on the supported proofing conditions.
To allow the use of virtually any substrate, GMG ColorProof offers you a Calibration Creation Wizard. With this wizard, you will be able to create a custom calibration set and a corresponding output condition for GMG OpenColor fast and easy.
If you already used the Epson SureColor SC-S80600 before this version, please note the following: The new proofing conditions are compatible with the ones provided by the GMG team for import before this release. During the upgrade, the imported proofing conditions will be replaced with the new ones automatically. Already calculated proof profiles will not be invalidated by this procedure. You can use your existing projects and proof profiles as before. You will not be able to import the old proofing conditions anymore after the installation. Custom proofing conditions (created by the Calibration Creation Wizard) will be left unchanged.
Please note that using the Epson SureColor SC-S80600 requires the following applications and additional licenses:
- GMG ColorProof 5.10 or higher with Epson SC-S80600 Printer license and GMG OpenColor Output license
- GMG OpenColor Profiler Base license and version 2.1.5 or higher
- At least one GMG OpenColor Profiling Preset license (Offset, Flexo, Gravure, or Digital)
- GMG OpenColor Proofing license
Please follow the links for more information:
https://gmgcolor.com/support/help/colorproof/prototype-proofing/cp-simulate-metallic-inks.htm
https://gmgcolor.com/support/help/colorproof/prototype-proofing/cp-simulate-metallic-substrate.htm
- PSO Coated NPscreen (43L)
- PSO Uncoated NPscreen (44L)
Please follow the link for more information: https://fogra.org/en/downloads/work-tools/characterisation-data
- Idealliance ECG Test Chart CMYKOGV Small v1 (2019) - i1Sis
- Idealliance ECG Test Chart CMYKOGV v1 (2019) - i1Sis
- Idealliance ECG Test Chart CMYKOGV Small v1 (2019) - i1Pro2
Please follow the link for more information: https://www.idealliance.org/ecg
You can start the measurement of printed test charts in GMG OpenColor right away. For printing, you can download the test chart as PDF from the GMG download area.
Based on feedback from our customers, new spot color libraries including HKS K and HKS N will have the Target Mode set to Absolute, so that printed solids will match the swatch book, regardless of the print medium. For more information on the Target Mode, please follow the link: Correcting the Target Color and the Tone Value Curve
HKS K and HKS N spot color libraries include not only solids, but tints as well. The target tone value gradation of the colors has been set to a linear SCTV curve. You can see the tone value gradation when opening a duplicate of the spot color library and click the Color Corrections button on the Tools & Actions panel.
You can define the Total Area Coverage and the overprint behavior under Screening and Usage in the Ink Settings dialog box in the project.
When calculating separation rules, the sum of the percentage values of all output colors will not exceed the Total Area Coverage.
Also, colors set to the same Screening Type will overprint only with solids. For example, if Cyan and Orange are set to Configuration 2, Cyan will only print with solid Orange and vice versa. This is indicated by the filled square icon in the Ink Settings. If colors are manually set to No Overprint, they will not overprint at all in the separation rules.
Existing separation rules will not be updated when the Total Area Coverage or overprint behavior in the Ink Settings are changed. There will be no information on inconsistencies. You will need to update separation rules manually by clicking the Reset Calculation button in the Edit Separation Rules dialog box.
For more information, please follow the link: Ink Settings