This printer can reuse documents by simply wiping out the old data on it and reprinting new. Pop in a used sheet with information, hit the print button on your PC and presto, in seconds, in goes the old, out comes the new. Sure it looks like any old printer but this one is a magic printer. Ok it's not really magic but it sure seems like it. Ok so I'll spill the beans, the secret is actually the paper. It isn't exactly paper but heat-sensitive plastic sheets. The printer uses a specially designed thermal head to remove printed data from the sheet and then prints the new data on it. All of this takes mere seconds.