I bought June Tailor Iron-On Quilt Labels (that are printed using your ink-jet printer) from JoAnn's and it was a big mistake. First of all, they are very stiff and not at all appropriate for a quilt to be used as a blanket (maybe okay for a wall hanging). Secondly, the instructions imply they are not really washable -- what's with that? Like you wouldn't need to wash a quilt?
I followed some other links on this board and learned that you need to use some products that set the ink (from your printer) in order for it to be permanent. Do some searching if you go this route.