I do the same as Kirsty - just print out a few and give them a good length of time to really dry and I've not had a problem with bleeding.

I do have a question though - has anyone tried using the pro markers on coated stock a la Barbara Gray from Clarity? I tried the other week using Memento ink as I always use on normal card and even though I'd left it to dry, the colours were picking up the outline a bit and also I was getting 'stripes' of colour as I coloured the images in. Hers never seem to be stripey! Any hints anyone?

Thanks!!