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maritim

PDF export grey + spot colour

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The gray palette is a CMYK build despite what it will report to you if you check the color.

 

Assuming your PDF export is to a CMYK profile, select anything gray, double click on the color proxy and the sliders will report 100% K (or whatever percent is appropriate for the swatch you chose from). But it isn't. So slide it down a skosh, then back to where it was or type in the value and press Enter.

 

That should resolve it...after you have done all your gray items. I changed the gray palette to be shades of K the first time I ran into this issue.

 

Mike

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thank you for your answer,

I have to place a lot of pictures. (all B/W).

they all end up cmyk. ?

the printing house needs B/W +spot colour.

my workflow:

Affinity Photo (save as grey) -> Affinity Designer (document rgb/cmyk) -> place picture -> put on Spotcolour -> export .pdf (grey + spotcolour)

= cmyk + spotcolour

I also tried to convert the document to grey befor exporting. no difference.

 

martin

 

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True builds of Black will end up in only the K channel. True spot colors (not one of the Bridge or certain other Pantone spot color palettes) will also go to the appropriate channel.

 

However, it sounds like you are colorizing a gray image with a spot color. Is that accurate? Or, are you simply adding elements that use a spot color?

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Good as regards not trying to colorize the image. AD doesn't support duotoned images.

 

So I am assuming from the name of the pdf that you used the PDF/X-1a profile?

 

It appears you perhaps used the Black swatch from the Gray palette? That will always export as a mix of CMYK. One needs to open the color editor with the background selected and move the slider down a skosh, then back to 100% (or whatever the desired K component is suppose to be). I have rebuilt my grays to be true percentages of black.

 

The image is an RGB image, or perhaps it was converted to such when the PDF was made. I extracted it, changed it to a grayscale image and inserted it into the AD file I made to recreate the file.

 

I didn't really know what Pantone you used, so I just picked one.

 

The attached ZIP has two files in it, the AD file and a PDF/X-1A file made from it. I didn't output printer's marks. Those will always separate to CMYK and I wanted to make sure there wasn't any CMY builds in the PDF. I didn't really look at what size you created your file and so sizes are different.

 

Check the AD file I created. It is correctly K + Spot.

 

Mike

Desktop.zip

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