PSD knocking out spot colour? - Adobe illustrator

This is a discussion on PSD knocking out spot colour? - Adobe illustrator ; Can someone help!... I have an Illustrator document, that uses a spot orange (basically you have to put a 100% yellow underneath the orange, then set the orange to overprint) this all works fine, but I need to put a ...

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PSD knocking out spot colour?

  1. Default PSD knocking out spot colour?

    Can someone help!...
    I have an Illustrator document, that uses a spot orange (basically you have to put a 100% yellow underneath the orange, then set the orange to overprint) this all works fine, but I need to put a layered psd on top of the orange, but when I do the area where the psd is knocks out of the orange - and reveals the yellow (Not on screen just when its pdf'd or printed) The PSD is a clipped image in photoshop that has a transparent background, it has drop shadows too so cant make an eps. It basically knocks out the area where the actual size of the psd is.

    The obvious answer would be to put the image to overprint - but you cant do that on images..

    Can anyone help?.. this is driving me mad!!

    Cheers

  2. Default Re: PSD knocking out spot colour?

    This is abstract, but, you could try creating a 1-Bit Diffusion Dither @ 300ppi file in Photoshop. Save it first as an .eps with "Transparent Whites" and thens ave a copy as a .tiff, place the .tiff in Illustrator. The only drawback is there are no Whites when it overprints. The other option could be saving the shadows as a separate file and convert that to 1-Bit DD transparent whites. You could then place the clipped grayscale .tif and then place the transparent shadows on top ( this would give you Whites in the grayscale file, but you'd still have the shadows as transparent.

    The conflict could be coming from your original Spot Color file and its conversion to .pdf.

  3. Default Re: PSD knocking out spot colour?

    Try reading this and see if it solves your question.

    <http://rwillustrator.blogspot.com/2006/08/spot-colors-transparency-and.html>

    Mordy
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