In some printers and industries, a Key color is missing from the sample, usually Brown. When channel names aren’t CMYK, VISU couldn’t always infer which channels are primaries, which one is Key/black, and which are secondary/EG (expanded-gamut) inks.

The new Ink Priority dialog lets you explicitly tell VISU the role of each ink channel so separations, GCR/UCR, and profile building behave correctly regardless of naming.

In short: you map every channel to its role — Primary, Black, or Secondary — and VISU builds the separation using that mapping rather than guessing from the channel name and color.

When you should use it
The printer reports ink names that aren’t CMYK (e.g., Beige, Brown, Red Brown, Blue).
Black appears more than once or is not recognised by name.
You have expanded-gamut inks (e.g., Orange, Violet, Green) and want VISU to treat them as Secondary rather than Primary.

How to set priorities (step-by-step)
For each listed ink, open the Ink Priority dropdown.

 Choose one of:

Primary: The main colorants used to reproduce most colors (e.g., Cyan/Magenta/Yellow on CMYK devices; Blue/Beige may be considered primary on some speciality devices if they function as base colors).

Black: The neutral/black channel used by GCR/UCR (only one channel should be set to Black).

Secondary: Expanded-gamut or supporting colorants (e.g., Orange, Violet, Green, Red, Blue on xCMYK/OGV/OGB sets). VISU uses them to extend gamut but does not treat them as base primaries.

Click OK to save. VISU will build the separation using your mapping.

Practical examples

A. Standard 6-color device (CMYK + O, V)
Cyan → Primary
Magenta → Primary
Yellow → Primary
Black → Black
Orange → Secondary
Violet → Secondary

B. Non-standard names (glass/ceramic/textile)
Blue → Primary
Brown → Secondary (supporting/EG ink)
Beige → Primary
Red Brown → Primary
Pink → Secondary

Adjust Primary vs Secondary according to how the printer/inkset is intended to be used.
If a color functions as a base color for most tones, choose Primary; if it is only for gamut extension, choose Secondary.

What changes under the hood
Separation logic: VISU uses your mapping to decide which channels carry the bulk of color (primaries), which carry neutral density (black), and which are only used to extend gamut (secondaries).

GCR/UCR: Only the channel marked Black is used for gray replacement and under-color removal.

Channel independence: Profile building no longer depends on ink name conventions; the mapping removes any ambiguity from unusual device definitions.

Best practices
Set exactly one channel to Black.
Start with three Primary channels for most systems; mark additional chromatic inks (O, G, V, R, B, etc.) as Secondary unless the device’s process truly uses them as base colors.
Document the mapping you used with the profile for future maintenance.

Summary
Use Ink Priority to explicitly declare ink roles when names are unconventional. Correct mapping = predictable separations, correct GCR/UCR, and reliable profiles on any device or industry.