I have been desperately trying to get organized, and when I found this gizmo from heaven at a heavenly price, naturally I jumped on it. After a few weeks of labeling frenzy, much like one of my other fellow reviewers, the tops of my labels started fading, then the middles, and soon the entire text of all my labels, poof! disapparated! Yes! I am a Harry Potter fan, but not for my labels in invisible ink. Tried all of the suggestions from the website. Cleaning, changing batteries, labels, cartridges. No luck. Still shooting blanks. Of course no way to put in new ink cartridges and it seems like the ink ran out. So waiting to hear back from customer service. Will post back, when and if I do. Really sad-that my labeling frenzy has been thwarted!!