The portable printer from start-up Zink is about the size of an iPod. It prints 51x76mm (2x3-inch) pictures, but larger formats will be available in the future. The printer has no ink cartridges, which enables the small size. Crystals in the special paper change from transparent to coloured when heated.
Zink's technology, made with the help of Polaroid, will let cameras do the same thing those old Polaroid cameras did (the image quality, however, will be higher).
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