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How to convert CMYK image to spot colour

Community Beginner ,
May 08, 2013 May 08, 2013

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Hello,

I have an image that is currently cmyk colours. It has also been flattened.

How do i convert the colour profile to spot colour for the printer?

Many Thanks

k

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Adobe
Community Expert ,
May 08, 2013 May 08, 2013

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Would you mind providing some useful information about the task?

Like which color do you want to replace, how many and which spot colors will be used …?

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Community Beginner ,
May 08, 2013 May 08, 2013

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sure, this is the image

web_master2.jpg

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Community Expert ,
May 08, 2013 May 08, 2013

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So I assume you want to use two spot colors?

What print process and how opaque will the used colors be?

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Community Beginner ,
May 08, 2013 May 08, 2013

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Yes, two spot colours and I would like the opacity to be full, so as much of the colour is replicated.

Print process is either primary colours or pantone colours.

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Community Expert ,
May 08, 2013 May 08, 2013

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You don’t seem to understand the terminology.

What print process: offset, gravure, flexo, …?

And as for the opacity that depends in part on the process and you best ask your printer about it.

If the colours are opaque one may not have to knock out the red under the dark blue, if the colours are translucent one may have to.

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Community Beginner ,
May 08, 2013 May 08, 2013

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ah ok, it is offset.

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Community Expert ,
May 08, 2013 May 08, 2013

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Well, then it may be necessary to knock out the blue.

Could you post screenshots of the Channels?

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Community Beginner ,
May 08, 2013 May 08, 2013

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Sure,

Screen Shot 2013-05-08 at 13.58.59.png

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LEGEND ,
May 08, 2013 May 08, 2013

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You need to create a clean greyscale representation eitehr with channel matzh operations orf selections, then assign it to spot channel a, the inverted mask to spot channel b.

Mylenium

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Community Beginner ,
May 08, 2013 May 08, 2013

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I know how to do the greyscale part, but what do you mean by assign a spot channel? and channel match operations?

thanks

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LEGEND ,
May 08, 2013 May 08, 2013

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