Patches to be Certified

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Select the set of tint values to be measured for a spot color. Click the check box underneath a tint value to select or deselect this patch. Use the Select all option to select or deselect all 11 tint values in one go.

Changes are required, for example, if some of the tint values on the spot ink characterization chart are not listed in the Certification dialog or if tint values are listed which are not available on the chart.

Display selected patches only

This option applies to the tint values you have selected, i.e. to the patches with a check mark.

Option enabled :

Only the selected tint values will be available on the list in the Certification dialog. The deselected patches are not listed and cannot be measured.

Option disabled :

All tint values continue to be available on the list. The deselected patches can be measured, but the measurements will not have any effect on the validation result.

Colorimetry

These options allow you to add or modify the tolerance values if they are incorrect or missing in the CxF/X-4 metadata.

Delta E

Select the delta E formula to be used for calculating the average deviation between the target values (defined by the CxF/X-4 data) and the actual values (measurements).

Also enter a tolerance value for this color deviation. Validation is successful if the actual deviation value is not greater than the tolerance value and fails otherwise.

ORIS CxF Toolbox automatically uses a default value of 2.5 dE2000 for the validation process if these values are set to 0 or undefined.

Illuminant

Standard light source expected to be used for viewing samples of the printed color.

This option affects the way the measurement data is converted to CIE Lab. Different illuminants will produce different delta E values in the printer validation process.

Standard observer

Standardized angle of the average human eye at which samples of the printed color are expected to be viewed. This angle determines the field of view and thus the way a person perceives color.

This option affects the way the measurement data is converted to CIE Lab. Different observation angles will produce different delta E values in the printer validation process.

Metamerism

Metamerism index

Enter a tolerance value for the metamerism index (MI) if this value is incorrect or missing in the CxF/X-4 metadata.

The tolerance limit is the maximum deviation permitted from a target value of 0 dE. A value of 0 means that the reference and measured sample must show exactly the same color deviations under both illuminants. A value of 3.0 means that the samples are not allowed to differ in metamerism by more than 3.0 delta E.

ORIS CxF Toolbox calculates up to six metamerism index values for every measurement, depending on the number of selected reference and test illuminants. Validation is successful if all of these MI values are within the tolerance limit. Otherwise validation fails .

A default value of 3.0 is used for the validation process if this value is not defined, i.e., if the tolerance is 0.

Reference/Test illuminants

Select the lighting conditions to be used for calculating the metamerism index (MI) values. You can use one or two reference illuminants and up to three test illuminants.

The MI is a delta E value calculated from the difference between the following:

• CIE Lab deviation between reference and measured sample viewed under a reference illuminant (e.g. D50)

• CIE Lab deviation between reference and measured sample viewed under a test illuminant (e.g. A, C or F11)

The selected illuminants will be used for all subsequent validation measurements until different illuminants are selected here – or until a PQX file with different illuminant settings is loaded . Reference and test illuminants are not stored in the metadata of a CxF/X-4 file.

Note:

You can disable the validation of the metamerism index by selecting the setting --- for either all reference illuminants or all test illuminants. In this case there will only be a colorimetric validation (delta E).

Apply Settings to

If enabled, the settings made with these options will apply to all CxF/X-4 color definitions loaded in the Certification dialog (default setting). If disabled, the changes will only be applied to the currently selected color definition.

Process Color Certification

Use this option if you also want to verify the print quality of process colors. The process colors cyan, magenta, yellow and black will be added to the list of spot colors in the Certification dialog and can be measured.

Measurements made for process colors can only be checked against the target values defined by an ICC profile. Select between the following settings:

• Use ICC profile from PDF

  This setting is only available if a PDF/X file is loaded. Select it to use the ICC profile defining the embedded output intent.

• Use the following ICC profile

  Select this setting to use your own ICC profile. Click and select a file.

• Off

  Functionality disabled. Only spot colors will be validated.

Automatically Select Next Patch

Enable these options if the next spot color or tonal value should always be selected automatically after a measurement has completed. This allows you to quickly make all measurements one after the other without having to select anything. This can save time when many spot colors are loaded.

If this option is enabled, you can specify the number of seconds during which the current measurement results should be visible before the next spot color or tonal value is selected automatically. You can make this setting separately for measurements that are within tolerances and for out-of-tolerance measurements .

If this option is disabled, the color patches remains selected after the measurement and can thus be remeasured conveniently.