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Posted (edited)

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 ...

spot_color.jpg

Edited by MiWe
insert screen
Posted
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

• MacBookPro Retina 15" |  macOS 10.14.6  | Eizo 27" | Affinity V1  
• iPad 10.Gen.  |  iOS 18.5.  |  Affinity V2.6

Posted

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

Posted
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...

1825444567_spotCYANoverprint1.jpg.10962aad1f6f3ec53becc55b79a17107.jpg

2144822161_spotCYANoverprint2.jpg.36ccc81c202e91d5b0c2fcd0b5a3246d.jpg

• MacBookPro Retina 15" |  macOS 10.14.6  | Eizo 27" | Affinity V1  
• iPad 10.Gen.  |  iOS 18.5.  |  Affinity V2.6

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