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SAN JOSE, Calif. — Japan's Canon Inc. said that it has developed a line of fuel cells for use in digital cameras and printers, according to Reuters.

Canon hopes the fuel cells will replace conventional batteries in these consumer products over the next three years.

It has developed three prototypes. One would be used in a printer, while the other is aimed for a digital camera. The smallest is about 1.2- x 1.6-inches for use in mobile devices.