We're trying to wrap our heads around an oddity we've been hit with in Adobe Pro X. We use InDesign to create newspaper pages, then export as pdfs, which are transferred via folder to our printing site.
I admit up front I don't know what's under the hood, but suffice it to say it works - our pages have separated properly day in and day out as far as we know, until a recent episode. A page was handled exactly as all the others. Looking at the print preview, the four-color page had all four inks nicely represented - including the black for four color photos and considerable text.
However, the pressroom says the photos arrived there with no black. The copy was there, but the black portion of the photos - which can be seen clearly in print preview - didn't make it through the system.
Without inviting ridicule, we wonder if anyone can explain how we made this happen. It didn't happen before (using this process). It hasn't happened in the week since, despite dozens of pages and many photos. Can anyone reproduce this (without manually killing off the black printer)? It would seem to us that if the black type and the black printer appear in the print preview, they would remain through the platemaking process.
Thanks.