AD : Need spot color to overprint

[MiWe]

Hi,

in Affinity Ddesigner I need an existing Pantone Color to be set to overprint.
Any clue how to achive that?

Greetings

[MiWe]

Got it ...

Pantone spot color set to global and afterwards it is possible to define overprint

THX for reading

[MiWe]

Oh no ... Does not work!

Export to PDF/X3 or X1 creates a file without any overprint according to Adobe Acrobat ...
Any ideas?

[wonderings]

Can't help you, but why are you wanting a Pantone to overprint? Your colour is not going to match the Pantone if you do this when printed. 

[lacerto]

(...)

[MiWe]

Thanks for your replies ...

@wonderings
Pantone is used for a cutting contur, actually not really printed. So the overprint is needed to avoid white space.

@Lagarto
Yes, this was the I tried to get the overprint working. But preflight in Adobe Acrobat shows that it does not if you got CMYK lying underneath Panntone. Disabling the CMYK colors  -  like in your screen of Acrobat - leaves white space ...

Edited September 25, 2020 by MiWe
insert screen

[lacerto]

(...)

[thomaso]

3 hours ago, MiWe said:

Disabling the CMYK colors  -  like in your screen of Acrobat - leaves white space ...

Could you upload this sample Affinity page for a closer look?

To me spot + overprint appears to work, as PDF 1.7 and PDF/X-4. Here a former test (additionally with blend modes) ...

v183 spot overprint 1.7 blend modes_no-rast.pdf
v183 spot overprint X4.pdf

[MiWe]

Thanks for your answers ...

@Lagarto
No, "Simulate Overprinting" is disabled. i attached a new screenshot.

@thomaso
As i see your PDFs do not use any CMYK colors. I need spot colors to overprint CMYK using PDF/X-1 or  PDF/X-3.
I attached two files. A Designer file and the corresponding PDF/X-3 output, Additionaly a new screen shot.

 

 

overprint_spot_color.afdesign

overprint_spot_color.pdf

[lacerto]

(...)

[MiWe]

System Failure in Brain.Exe ...

Holy crap, you are absolutely right. Somehow i misunderstood "Simulate overprint".
And that after doing this stuff not for the first time ... 🤣

Thanks again

[thomaso]

49 minutes ago, MiWe said:

As i see your PDFs do not use any CMYK colors. I need spot colors to overprint CMYK

Just a note (though you found the solution): The overprint function works with both. You can consider a spot color 'simply' as an additional color channel besides C, M, Y and K. You also can create for instance a CYAN as spot color which is overprinting a not-overprinting PANTONE spot color...