Spot Channels overprinting - I there a way to switch this off so they knockout?

Community Beginner ,
Mar 22, 2022 Mar 22, 2022

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Hi,

 

I have Googled and the only answer I can find is 'back with white' which wont work (the where pixels aren't fully opaque the white whill show through).

 

So, I have some elements in Photoshop set to print as Spot colours via Spot Channels. When I bring this file into Illustrator, it shows as overprrinting. Is there a way to stop them overprinting? If they were CMYK they would knockout by default... that I all I want of these Spot channles.

 

Many thanks.

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Adobe Community Professional ,
Mar 22, 2022 Mar 22, 2022

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Could you please post screenshots with the pertinent Panels (Toolbar, Layers, Channels, Options Bar, …) visible? 

 

In Photoshop you need to manage knockouts/overprints of Spot Channels yourself, which in this case probably means manually knocking out the affected parts in the Channels. 

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Community Beginner ,
Mar 22, 2022 Mar 22, 2022

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Thanks. I understand your reply re managing knocking out in Photoshop, but wht then when you combine with Illustrator elements?

 

An illsutraor gave the more decorative bits as a Photoshop file, but the rules and more graphic elements, which are in the same colours, we would do in Illustrator for true lines. See attached.

 

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Adobe Community Professional ,
Mar 22, 2022 Mar 22, 2022

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I guess you need to create a choked white Layer then; 1 or 2px might suffice. 

What is the psd’s Blend Mode in Illustrator? 

 

Please post more meaningful screenshots that include the pertinent Panels. 

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