We're laying out a book in InDesign. The client has exported thousands of equations from MathType. They look black but they're actually RGB. What's the easiest way to convert these objects to CMYK black? Can it be done using the convert colors dialog in Acrobat after the PDFx is made? If so, what settings should be used? I don't know what all the options mean.
Yes, I was wondering if there's a way to convert the PDFx file to all CMYK black, rather than open thousands of equations in Illustrator. :-) And if it is possible, what settings to use, as there are so many.
If you're using InDesign then simply export it with a color conversion profile applied - no need to fix it later in Acrobat. For example if you have a print intent, export to PDF/X-1a and everything will convert to CMYK since that standard won't allow anything else. If you need a different PDF setup to retain interactive stuff etc., select Convert to Profile in the PDF export dialog under the Output tab, and pick something like SWOP2.