Open the attributes panel and check the balck frame to be sure it isn't set to overprint.
Nope. Was not checked.
Are you able to share the file?
Does the phantom type show up if you move the cursor over the area in Separations Preview (it would be evident as a shifting mix in an area that should have only your rich black formula)?
Maybe -- with regard to sharing. I had modified the file since this problem came up (by removing the underlying type in photoshop) so I need to see if I still have an original to share.
One other note. I had gotten the ad from a co-worker who had set it up. One mistake in my original post is that the black box placed over the underlying type was 100% K and not a 4-color black.
In order to share, how do I get you the file(s) and do you want both the PDF and InDesign/Photoshop files?
One mistake in my original post is that the black box placed over the underlying type was 100% K and not a 4-color black.
Actaully, that explains everything.
The default [Black] swatch is set to overprint by default, so it would just make everything behind it relatively darker if it didn't already have a 100% K component.
Never knew that.
You can turn it off in the prefs, but I wouldn't recommend it. The reasoning behind overprinting [Black] is that most type uses it as the fill color and if it overprints any background it just gets a little darker and removes any potential registration issues (not to mention that for small type it mostly overprints anyway, especially hairlines, after it's trapped). It's only the default [Black] swatch that behaves this way, though, so you can make a copy and it will knock out.