Can't reproduce it here, so no answers; only questions...
- Why are you saving as EPS?
- What is your "rich black" formulation?
- What are your PDF export settings?
- How have you verified the PDF doesn't contain the rich black? Of what formulation is the PDF's black?
Thanks for taking time to answer. Here are the answers to your questions.
1. Not always, but many times I save vector images as .eps. They have proven in the past to be reliable and handle re-sizing well. However, I have also tried using the .AI file with the same result.
2. The rich black formulation I'm required to use for our printing system is C:100% M:100% Y:100% K:100%
3. My PDF export settings are based on PDF/X-1a:2001. My output settings are set to No Color Conversion and to Include All Profiles
4. I've verified that the PDF doesn't contain the rich black by opening it in PS and taking a color sample. This difference is also noticeable looking at the physical print. The formulation of the black in the PDF is C:75% M:68% Y:67% K: 90%.
I hope this helps, and thanks again for your help!
Okay, looking for the flaw in your scenario, I get the exact same result you do if I save the EPS file in Illustrator from a document in RGB color mode.
- Re-open the EPS graphic in Illustrator.
- Choose File > Document Color Mode > CMYK color
- Select All
- Choose Edit > Edit Colors > Convert to CMYK
- Select all elements to be rich black and reset the CMYK values to all-100%
- Save as AI (you really should develop your habits away from using EPS)
- Relink in InDesign
- Export as before
- Check your colors in Acrobat > Output Preview
The formulation of the black in the PDF is C:75% M:68% Y:67% K: 90%.
You can get the output values either from Acrobat's Output Preview or ID's Separation Preview.
If you are looking in Acrobat you have to consider that the values you see depend on the Simulation Profile. If it conflicts with your ID document's CMYK profile you would see converted values. If you want to see the object's actual color values look at Object Inspector. So my document profile is US SWOP:
Opening in Photoshop will not tell you anything about the color inthe PDF since it will be converted to the working space in Photoshop.
CMYK 100/100/100/100 is Registratyion color, and generally not usable as a printable color for anything but printers marks. Your numbers from Acrobat probably are showing a conversion to fit the ink limit for your output profile (they add up to 300%, which sounds like SWOP). That could be happeing when you place the art, so check the separations preview in ID. Bottom line, though, is your rich black is not a good mix.
I assume this is for some kind of composite printer where there's no ink drying issue?
Also if you use the PDF/X-1a preset without changing the output settings then InDesign's Separation Preview will match Acrobat's Separation Output preview because X-1a includes an output intent profile which is used by default as the simulation profile in Acrobat.
I gave this a try but still didn't get the result I was hoping for. The color reading in Acrobat output gave me 100%K.
The color reading in Acrobat output gave me 100%K.
What does InDesign's Separation Preview show?