The PrintBrush XDR, developed by Stockholm-based PrintDreams, is a handheld inkjet printer that wirelessly communicates with a smartphone app via Wi-Fi. Full-color graphics are created on the app, and then transmitted to the PrintBrush. Alternatively, a USB cable can be used to transfer data, plus up to four image files can be stored in the XDR’s own internal flash memory, so it can be used later without a smartphone (or tablet or laptop) present.
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To print graphics, users simply drag the device across ‘almost any surface,’ going either left-to-right or right-to-left. Utilizing an optical sensor and an inertial measurement unit, the XDR determines the direction and speed of movement, printing the graphics so that they come out the right way around regardless. It should be noted that the PrintBrush presently can’t print full-page graphics, although that capability is expected to be achieved soon. What it can do is print up to three horizontal “swaths” of graphics in one go, with a small gap between each swath.
The device is powered by 11.1-volt lithium-polymer battery that is reportedly good for about 4000 imprints per charge. One ink cartridge is expected to last for around 5000 half-inch by 4-inch (13 by 102 mm) swaths.
