Hi, all. I'm working on a logo which will need to be separated for 2-color offset printing. To produce shading effects, I've created a solid black shape to which I've applied a black/white gradient as an opacity mask. I've set this piece over an identical shape filled with a PMS blue. The idea is to overprint the black ink as a solid-to-transparent gradient over the blue solid to produce the shading. When I set the black gradient to "Overprint Fill" and view the logo in "Overprint Preview" the result looks great on screen. The design also features a hard bevel, the dark edges of which are produced by placing semi-transparent shapes filled with black and also set to "Overprint Fill".
However, when I go to save the file I'm presented with a warning about how using spot colors with transparency can "generate unexpected results". In the save dialog box there is also a message that says "Overprints will not be preserved in areas that interact with transparency". What does all of this mean for my poor little logo when it goes to press?
Here's an example of what I'm trying to achieve. The highlight is a simple gradient from white into the blue, but the shading is performed as outlined above. Any insight would be appreciated. Thanks!
