Folks;

done a modestly complex flyer layout which, by now, should be printed by a professional service. Unfortunately, those would like to have a CMYK PDF image, including an additional layer for a "highlight" color (which should be gold or silver, not sure yet). I've done a bit playing and, so far, am unsure about whether (and/or how) such a kind of pre-print color separation can be done using GIMP, or whether I would have to do this in another way. Any thoughts, recommendations, ... how to get my xcf stored in a way feasible for this kind of printing?

TIA and all the best, Kristian

Hi Alexandre;

wow, that was fast, and to the point, thanks a bunch. :) Just one question left here:

Am Dienstag, 22. Januar 2013, 15:19:16 schrieb Alexandre Prokoudine:

Do color separation with separate+ or CMYKTool, place the output CMYK image into a Scribus document, add the "highlight" text to a new layer and use a spot color you need for color fill of that text, then export as PDF 1.5 intended for printing.

Yet, I already have text in my original image (and, for that matter, rendering this text so that it looks the way it does now was quite an effort and the main reason for me to use Gimp for that, in the first place). The "highlight" layer, so, will have to be sort of a "by-color" selection taken from the composite image (text and background picture). That's what so far kept me from looking into other alternatives as Gimp seems best at doing right this...

Thanks again and all the best, Kristian

Am Dienstag, 22. Januar 2013, 15:50:57 schrieb Alexandre Prokoudine:

Yet, I already have text in my original image (and, for that matter, rendering this text so that it looks the way it does now was quite an effort and the main reason for me to use Gimp for that, in the first place). The "highlight" layer, so, will have to be sort of a "by-color" selection taken from the composite image (text and background picture). That's what so far kept me from looking into other alternatives as Gimp seems best at doing right this...

Excuse me, but what is the question? :)

Ah, sorry. Wrote too much. :/ I need he "highlight" layer to not contain text (or "highlighted" text) but rather some selection of the image having the same color that should be emphasized in print. Imagine "grey clouds" that should be "silver clouds" when printed...

To do so, my idea would be to store two images ("background" containing the full image, "highlight" just containing the selection that should be in the highlight color layer), convert "background" to CMYK and use scribus to merge these two into one PDF 1.5 output. Would that work?

Thanks again and all the best, Kristian

Am Dienstag, 22. Januar 2013, 16:29:06 schrieb Alexandre Prokoudine:

having the same color that should be emphasized in print. Imagine "grey clouds" that should be "silver clouds" when printed...

Mmm... Are we talking about low amount of metallic ink on top something to, er, spice things up? :)

Yes, that's pretty much what I had in mind. :)

How about converting selection in GIMP to a path, saving the path to SVG, importing it to Scribus (to a new layer) and filling it with a metallic spot color with low opacity?

I'll give it a try. Sounds good to me, let's see where it gets me. :) Thanks a bunch for your help, all the best! Kristian