PrintBrush is by far the most amazing printer I have ever seen. It fits in your pocket and can print full sized A4 sheets at 600 dpi (black and white only). It uses Bluetooth and rechargeable batteries to print without any wires, although it does carry the optional USB and IRda interface. But PrintBrush’s awesomeness is in the way it prints. Watch the video below.
The real beauty of the PrintBrush is that it’ll print on any flat surface like, notebooks, letters, and other media that would never fit into a conventional printer device. PrintBrush uses some kind of accurate optical sensor that can detect tilt and rotation in addition to translation.
PrintBrush is due for launch by the end of 2009 or early 2010 for $199.