Duotone preview problem in PDF

[Johny_Harris@adobeforums.com]

I am having trouble displaying a Duotone in its Pantone seperation. The Pantone 300C sep just appears black when viewed in Acrobat 6. If i knock it to process in the seperation preview it displays as it should in blue and black.

Any one any clues?

Thanks in advance.
Johny

[Gary_A.@adobeforums.com]

This is normal. A spot color is a single ink color and will only show its CMYK values if you convert it to process. Also if you only have a single ink turned on in the seps preview it will preview in black.

[Johny_Harris@adobeforums.com]

Thanks Gary for your reply.

I understand that a spot colour is single ink, seperate to process. But if I have a 5 colour job with, for example the 5th colour being some text coloured up in a spot blue, the text appears blue. But if I put the Duotone image in there the text appears black. Its as if the Duotone is overiding the colour preview.

[Gary_A.@adobeforums.com]

Hmmm. I haven't seen that. Do you have someplace public you can post the file?

[Johny_Harris@adobeforums.com]

I don't I'm afraid. I have just discovered something however. If I preview the PDF in Acrobat Reader or Preview in Max OS X it displays fine, in colour. Its just when I open it in Acrobat 6 that its decides to display it in black.

We have Pitstop installed as a plug in on this machine, could that have something to do with it?

[Jon_Bessant@adobeforums.com]

This would not have anything to do with Enfocus Pitstop.

One question - do you create the PDF from InDesign? I only ask since the
'simulate overprint' option can give the opposite effect when the
'overprint preview' is turned ON in Acrobat 6 Professional ... and
normal Readers can view the file OK ...

Jon

[Johny_Harris@adobeforums.com]

Jon many thanks!

The postcript had come from Quark and then distilled, but all I had to do was knock overprint preview off in Acrobat 6 Pro and the whole seperation display in colour. Seems the overprint preview doesn't really work as it should?

Thanks again guys for your help.

Johny