The images you placed above are from post PDF, not InDesign, correct? You said to first look at InDesign. I had previously looked at the (InDesign) Windows>Output>SeparationPreview but did not understand it. I hope these questions are not too ignorant sounding: I am now looking at InDesign separations again with a page of text-only that I set as "Black" (not "Registration) and the page has only one layer, but when I click on the frame it shows all zeros, even the black. Another text-only page shows 100% CMYK and 100% Black. But results change on some. For instance, one frame may show as all zeros and then I go to something else and come back to it and the second time it has 47% CMYK and 47% Black... or some other number. When I click on one random image that is Grayscale Mode, 8 bits channel in Photoshop, it shows me 80% Black and 80% CMYK. I click on another that I have verified as being in Grayscale Mode, it shows me 71% Black and 71% CMYK. Another grayscale image shows all zeros. Other grayscale images show other percentages under 100% for Black and CMYK. What does this all mean in regards to printing Black K only?
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