I have the R300 and haven't noticed a problem, then again I haven't tried licking my finger and trying to smudge it ... I know it might be a pain, but maybe after you print it and it dries lay it out on a piece of paper and hit it with some fixative (I think thats what it's called) used to use it in art school, on our pencil drawings. I know it seems like a pain, but the stuff dries in minutes. If I remember we also used to use aqua net hairspray as well (when we were out of fixative).