Here is the answer from Enfocus, they admit nothing is wrong with my PDF but their terminology of "Spot color" doesn't always point to non-process (CMYK) colors. That means that a CMYK mix could be tagged by Pitstop as a "Spot Color". Sounds dangerous to me to rely on Pitstop automation to delete/convert "Spot Colors"...
Hi,
To me, it seems like a terminology issue. I can't see anything wrong
with the PDF.
PDF allows colors to be defined in multiple ways. One way is to say 0,
0, 0, 30% CMYK.
But yet another of these ways is to call them by the name of the ink and
to say 30% of the ink Black.
From the standpoint of the amount of ink on paper, all three are equal
but there can be other kinds of side-effects, esperially in the area of
overprint.
That's why PitStop prefers to call the color based on the way they are
used in the file. And because 'calling the ink by name' is the only way
that is possible for spot colors, we call this 'Spot color'. We also do
this for process colors, so 'Spot Color Black' is the process black (the
K) but called by its name.
So if you see Spot Color Cyan, Magenta, Yellow or Black, don't worry:
these won't generate additional plates. And our check on 'spot color is
used' will not trigger an error either.
But we do want to show it to you on the inspector because for overprint
it does matter whether it is Spot Color Black or CMYK-black
Kind regards,
Andy Den Tandt
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Andy Den Tandt
Technical Product Manager
Enfocus - an Artwork Systems Brand
http://www.enfocus.com
Artwork Systems N.V.
Artwork Toren
Bellevue 5/1101, B-9050 Gent, Belgium
T: +32 9 265 84 11
F: +32 9 265 84 10
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