Change Management

What happens if you already created proof profiles and then make changes to the project, for example, because the process has been changed or if you need to tweak the colors? GMG OpenColor ensures that you work with up-to-date profiles. The profile cache dynamically generated by requests from GMG ColorProof will be automatically cleaned up. For profiles created manually by a user, you can decide whether you want to keep them or not. If you keep them, they will be marked as outdated. If you later decide to clean up outdated profiles, you can use the action Delete Outdated Profiles.

The change management regards changes to the Printing Process, Media, Inks, Color Corrections, or Characterization that will actually affect the profile. When you are making changes to a Characterization that is used in one or more projects, GMG OpenColor will notify you and you can choose whether you really want to apply the changes to the Characterization (and thus the linked projects) or whether you want to keep the linked Characterization unchanged, and instead create save the edited Characterization as a copy. This copy will not be linked to any project and you can create new projects from it.

If you decide to change all linked projects, the dynamically generated profile cache will be cleaned up for all changed projects. Manually calculated profiles will be marked as outdated.

Changes applied to the Noise, Missing Dot, and White Ink settings of the Proofing Condition and applied to the Ink Settings will always be ignored. This way, you can still keep multiple proof profile variants, for example, when playing around with the Noise settings.

The change management ensures data consistency also when gradation files are changed.

Example: 

Consider a case where a manual color correction is applied to an ink, for example "Pantone 301 C". If there are static profiles affected by those changes, i. e. that are using "Pantone 301 C" as an ink, GMG OpenColor will inform you that there are outdated profiles and ask you whether you want to remove those profiles immediately. If you respond with No, those profiles will be marked as outdated, but you can still use them.

Example project before editing the project.

In this example project, one profile has been calculated statically by the user (1) and two profiles are available in the dynamically generated profile cache (2). You can see that the first profile in the cache, V4, uses a different ink set than the V5 profile.

Change management after editing an output ink.

In this example, the user applied a color correction to the blue Pantone 301 C output ink.

As the statically calculated profile (1) uses this ink, the gray color indicates that the profile is outdated. The user can still use this profile.

The dynamically generated profile cache (2) was automatically cleaned up by the application. The V5 profile used Pantone 301 C and was thus removed from the cache. If the user prints a proof job in GMG ColorProof that has the same color channel configuration as the V5 profile, a new up-to-date profile will be calculated automatically. The V4 profile does not use Pantone 301 C and therefore the change does not affect this profile. Accordingly, the profile is still available in the cache.