CMYK problems

[Scott White]

I have set up a whole-new black called New black, using 100 percent black
only.  Works great for us and our printers.
-- 
Scott White
Media Production Manager
AlaMark Technologies
210-704-8239
swhite at alamark.com


> From: Daniel Osborn <Daniel.Osborn at tomtom.com>
> Date: Tue, 16 May 2006 19:57:59 +0200
> To: <framers at lists.frameusers.com>
> Subject: CMYK problems
> 
> Hi,
> 
>  
> 
> I have some questions about creating pdf files for a printer. To try and
> get it right, I'm currently doing the following:
> 
> 1. Only use cmyk .eps images.
> 
> 2. Set GetLibraryColorRGBFromCMYK to 'Printing'
> 
> 3. Save as pdf rather than print to pdf.
> 
> 4. Convert the resulting pdf to cmyk using Quite a box of tricks.
> 
>  
> 
> I use save as pdf because I found that the images lost a lot of quality
> when the pdf was converted to cmyk, although I think this may have been
> before I started using .eps images.
> 
>  
> 
> The files I generated have been printed with very good results. Many
> thanks to everyone on the list who helped me get to this stage when I
> first had to produce a file for a printer.
> 
>  
> 
> I'm now delivering to a different printer and they don't like the
> colours in the pdf. The images are not a problem, it's the colours used
> for text, thumb tabs and shading in tables.
> 
> In FM, the colours are defined like this:
> 
> Black   K 100%
> 
> Red     M 90%  Y 86%
> 
> Grey    K 30%
> 
> And I have some text in an .eps image which is defined as K 100%.
> 
>  
> 
> In the pdf the colours have these values:
> 
> Black   C 75%  M 68%  Y 67%  B 90%
> 
> Red     C 3%    M 100%  Y 100%
> 
> Grey    C 21%  M 16%  Y 16%
> 
> And the black text in the .eps image is C 75%  M 69%  Y 62%  B 75%
> 
>  
> 
> The printer is saying that the 'black' text will come out as a muddy
> brown with misregistration issues (not sure what that means) and he is
> also not happy with the other colours.
> 
>  
> 
> I used the Output preview tool in Acrobat Pro 7 to get these figures
> (and so did the printer).
> 
>  
> 
> I've tried printing to pdf with the same result and also changing
> GetLibraryColorRGBFromCMYK to None, with the same result. Can anyone
> help me with this? I can understand that some colours will change
> slightly but I don't understand why black comes out like this and also
> why the black in an .eps image has changed so much.
> 
>  
> 
> I'm also a little confused that the last printer didn't have any
> problems with the files, at least none that he told me about.
> 
>  
> 
> I'm using Framemaker 7.2p158. The printer suggested I use FM 6 on the
> Mac instead...
> 
>  
> 
> Thanks,
> 
> Daniel
> 
>  
> 
> Daniel Osborn | Technical Writer | TomTom | daniel.osborn at tomtom.com |
> +31 (0) 20 8500 934 office
> 
>  
> 
> 
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