In most programs, black type always overprints colored objects behind it. If you ever want the type to not overprint, create a new color defined as 99% black and use it for your type. Your text will still print totally black, but you can assign this color any trapping value you’d like.
In QuarkXPress, choose Edit> Colors… and click the New button (or click the + symbol on the Colors palette) and make changes similar to this:
Jay Nelson is the editorial director of PlanetQuark.com, and the editor and publisher of Design Tools Monthly. He’s also the author of the QuarkXPress 8 and QuarkXPress 7 training titles at Lynda.com, as well as the training videos Quark includes in the box with QuarkXPress 7 . In addition, Jay writes regularly for Macworld and Photoshop User magazines and speaks at industry events.