I've never tried putting an edible image on anything but buttercream. How would I do it on fondant? Is fondant too dry for the image to stick to it? Does the fondant need to have a little buttercream on it for the image to stick? Or maybe a light mist of water? Or does it not need anything at all? I was thinking of trying a cake similar to this one:

http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=59582

Anyone else have experience with this?

If u dont have printer for edible images, I would use ricepaper and stick it on fondant with clear piping gel. This could work though.

Here's an edible image plaque tutorial:
(But it should work fine for your needs.)

http://forum.cakecentral.com/cake-decorating-ftopict-13474-.html

HTH