open pre-existing doc with CMYK spot colour defined named as PANTONE 280 C
paste into new document
Both existing doc and new doc have identical colour proof set-up
new doc has empty colour palette
When pasted into new doc, CMYK spot becomes Book Colour Spot
Same element with colour defined as a CMYK Process swatch is unchanged
Book Colour Swatch has colour shift (on-screen)
Once processed in ONYX rip this colour has huge shift in colour.
Any ideas as to how to fix this?
(so result is pasted as CMYK spot without transformation)
Thanks Monika, interesting thread, but not as relevant to my use of CS5 as I hoped (unless I missed your point)
My issue is that (seemingly suddenly) as I paste between documents Illustrator CS5 changes a colour spec from Spot CMYK to Spot Book Colour.
This affects output when ripped: ONYX uses the colour name and possibly the spec to then process through the ICC profile for our digital printers.
Either way output is not as expected.
Initial (original) file outputs as expected, second (pasted graphic now with different colour spec) prints differently.
I'm just trying to figure where CS5 chooses to change the colour spec.
... Illustrator CS5 changes a colour spec from Spot CMYK to Spot Book Colour ...
Are you saying that when you double click the swatch of the spot color in the Swatches panel in both documents, the Swatch Options dialog shows different Color Mode and or values of the spot color? Can you please show screen shots of the Swatch Options dialog of the spot color in the two documents?
Pantone 280 C is spot CMYK
$ 72 0 18
Pasted element in new document
Now a spot book colour with lab colour definition
I don't mind the different colour space definitions, but the arbitary change to Book colour means our RIP software deals with the colour differently.
I'd like to know why this is happening, to either make a change in our RIP or to change our workflow
This is CS5 not CS6...
Colors changing to book colors upon paste happens when you have an exisiting book color by the same EXACT name existing in the document swatches you paste into.
Regardless if this is the case for you, a solution that will work, and a good overall policy for you is whenever you make book color into cmyk, change the name. I add "(cmyk)" to the end so your color would be "PANTONE 280 C (cmyk)".
However, this is a new blank document, not a document with existing colour swatches
Also, considering that this is a daily activity (copy from doc A to Doc B) I'd rather not also have to add the redefine colour step everytime, for every predefined spot colour.
I'm not sure why this has started happening recently, my real goal is to find why, rather than create a work-around.
A book color that you change to spot cmyk, will change back to book, unless you change the cmyk breakdown. As menioned before if you ever change the cmylk breakdown you want to chaneg the name of he colro or else you will dig yourself into a hole.
Do this to help understand what is happening.
I thought that ninefish's problem as shown on the screenshot in post #4 is that the Pantone color defined as CMYK book turns into Lab book color after pasted in a new document. This is not normal. In CS5 the default is CMYK book color for every new document unless a custom document profile had been created and selected when choosing File>New. And ninefish said that the Spot Color options in the new document is CMYK book but if I understand it correctly after pasting the Pantone color becomes Lab defined. If that's the case I think there is something completely wrong with the way Illustrator behaves there.
I work in prepress and this is driving me crazy. Whenever I forget to check the spot colors of pasted/linked art, if its book color it's not not recognized at the rip unless I'm using a profile that has a color table enabled, and ends up just printing black. Problem is even when I'm checking a PDF I've made for print in acrobat it doesn't show the problem. Only preview in OS X and my rip have the problem.
I've scoured the web in search of a solution and found nothing. I even picked the brain of a Agfa color specialist that came into the shop last week and he had no idea.
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