Taking this too seriously, but you could probably do it by hacking up a mobile inkjet printer and turning the ink volume way down to control ink bleed. Edit: L

Taking this too seriously, but you could probably do it by hacking up a mobile inkjet printer and turning the ink volume way down to control ink bleed. Edit: Looks like some guy already did this: http://blog.makezine.com/2011/09/26/toilet-paper-printer/ http://blog.makezine.com/2011/09/26/toilet-paper-printer/