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Participant
January 30, 2025
Answered

Além do CMYK e RGB

  • January 30, 2025
  • 4 replies
  • 733 views

Bom dia, seria muito util e agradavel se adicionassem a opção de "CMYKOGV" pois o mercado da grafica e design sempre estão evoluindo numa constancia inacreditavel pois sempre tem novas ideias de todos os lados, e adicionar o CMYKOGV seria muito util pois as novas maquinas estão usando esse sistema de "heptacromia" ou "gama expandida".

 

Correct answer Bobby Henderson

In large format printing I most often see Light Magenta and Light Cyan added to the basic CMYK ink colors. There may be large format printers to do CMYKOG, but I can't think of any immediately. White ink is a big deal with newer large format printers. "Sandwiching" layers of white ink and color really helps any print that will be back-lit.

 

But, yeah, processing six color print jobs really needs to be managed by the RIP. I don't like designing print-related work in RGB. Sometimes there isn't any other choice. Printers with additional ink colors can simulate Pantone spot colors a good bit better than a straight CMYK printer.

4 replies

Brad @ Roaring Mouse
Community Expert
Community Expert
January 30, 2025

Sorry, this would not be a good thing, not even for offset. This is also why hexachrome died a quick death many years ago. Every machine will have different capabilties and response to these values, so being able to specify them would be nonsensical. Besides, not every wide gamut printer has JUST CMYKOGV and even if they did, their inks would behave differently. It's the use of color management and properly crafted ICC profiles that determine consistent output, not to mention a good operator at the wheel. 

Jacob Bugge
Community Expert
Community Expert
January 30, 2025

Thank you for the clarification of the killer facts, Brad.

 

It would have been nice to be able to get at least some impression of the possible colours while working on them as for CMYK.

 

I was aware that it would be a difficult/impossible task to realize such a feature.

 

Brad @ Roaring Mouse
Community Expert
Community Expert
January 31, 2025

Yah. The printer I was working with at the time had me explore outputing Hexachrome (essentailly CMYKOG) once we bought a 6-colour press. It didn't improve things enough for our clients to accept the higher cost to run, so it died quickly. Color management was a pretty new thing and hard for even my boss to grasp. It didn't help that, at the time, all our colour (drum) scans were already CMYK so were already dumbed down.

Jacob Bugge
Community Expert
Community Expert
January 30, 2025

Diniz,

 

I presume you wish to be able to see the actual limits relative to (s)RGB on screen, and adapt to that; obviously you cannot see the opposite (smaller) parts elsewhere that go beyond (s)RGB.

 

You can submit a feature request,
https://illustrator.uservoice.com/forums/333657-illustrator-desktop-feature-requests
https://illustrator.uservoice.com/

 

If one is already submitted, you can join it.

 

Monika Gause
Community Expert
Community Expert
January 30, 2025

Just working in RGB and leaving the rest to RIP does not do it for you?

Mike Witherell
Community Expert
Community Expert
January 30, 2025