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General Category => General Prepress => Topic started by: andyfest on January 25, 2018, 11:16:14 AM

Title: Extended gamut (7 colour) printing
Post by: andyfest on January 25, 2018, 11:16:14 AM
Just wondering if anyone out there is using extended gamut printing (7 colour process), esp. with regard to Esko's Equinox format? The issue of extended gamut printing raises it's ugly head every 5 or 6 years here and I just wanted to get feedback from anyone using it in a sheetfed environment.
Title: Re: Extended gamut (7 colour) printing
Post by: abc on January 26, 2018, 05:12:05 AM
Just got back from the PIA Color Conference in San Diego and the EG sessions were packed.
I think it might be coming of age.
Title: Re: Extended gamut (7 colour) printing
Post by: Tracy on January 26, 2018, 04:39:04 PM
Hey you were in my neighborhood!
Title: Re: Extended gamut (7 colour) printing
Post by: abc on January 26, 2018, 06:00:32 PM
And very nice it was too, much warmer than home.
Title: Re: Extended gamut (7 colour) printing
Post by: beermonster on February 08, 2018, 01:23:30 AM
i work for a global giant. i think either fixed palette or EG is on the cards. i get the principal and the commercial reasoning. we have flexo and litho. not entirely convinced. i am sure our R&D gang are looking into it as its been mentioned a few times
Title: Re: Extended gamut (7 colour) printing
Post by: StudioMonkey on February 08, 2018, 08:03:39 AM
7 colour printing? Anyone remember Hexachrome? That was CMYK+Orange+Green usually.
Joking aside, the HP Indigo is a 7 colour digital press which I have seen amazing results from.  They were running CMYK+ Orange+Violet.  Good for more accurate colour matching of the Pantone gamut which CMYK can't do very well.  It's supposed to be able to run spot colours as well.  I used to have a 6 colour desktop inkjet which was great for photos (CMYK+lightC+lightM).
Title: Re: Extended gamut (7 colour) printing
Post by: andyfest on February 08, 2018, 12:35:40 PM
Quote from: StudioMonkey on February 08, 2018, 08:03:39 AM7 colour printing? Anyone remember Hexachrome? That was CMYK+Orange+Green usually.
Joking aside, the HP Indigo is a 7 colour digital press which I have seen amazing results from.  They were running CMYK+ Orange+Violet.  Good for more accurate colour matching of the Pantone gamut which CMYK can't do very well.  It's supposed to be able to run spot colours as well.  I used to have a 6 colour desktop inkjet which was great for photos (CMYK+lightC+lightM).
Bottom line is that no-one will claim 100% spot colour accuracy, even with 7 colour technology, so it's a moot point with us. A few flexo plants are using it for big runs of say, chip bags, but very few sheetfed applications that I've heard of.
Title: Re: Extended gamut (7 colour) printing
Post by: DPSprint on February 08, 2018, 04:34:31 PM
Quote from: StudioMonkey on February 08, 2018, 08:03:39 AM7 colour printing? Anyone remember Hexachrome? That was CMYK+Orange+Green usually.
Joking aside, the HP Indigo is a 7 colour digital press which I have seen amazing results from.  They were running CMYK+ Orange+Violet.  Good for more accurate colour matching of the Pantone gamut which CMYK can't do very well.  It's supposed to be able to run spot colours as well.  I used to have a 6 colour desktop inkjet which was great for photos (CMYK+lightC+lightM).
that what we run... the spot orange gets used a fair bit, as well as the spot white and occasionally the digital matte clear.
 Dont think the purple has been used for anything I can recall. And I dont think its been used to match pantone colours with the spots... not that I know of anyway!
Title: Re: Extended gamut (7 colour) printing
Post by: Lammy on February 09, 2018, 11:00:30 AM
Three's another "extended" gamut coming. It's being developed by an ink company and some of the folks that put together the original G7 standard. Still CMYK but brighter, wider, pigments in the ink.
Title: Re: Extended gamut (7 colour) printing
Post by: Fat Boy Tim on February 10, 2018, 05:26:17 PM
We've had a play with E.G. on our HP Indigo (CMYKOVG) but we found the moire was unacceptable for some brand colours. We have the old IMS {ink mixing system) so we have stuck with that. If you are not printing large blocks of solid colour then it might be for you.