Computer manufacturers have been rushing energy-saving machines to market, and now the "green" movement is spreading to printers. Despite aggressive recycling programs, millions of laser-printer cartridges still end up in landfills. In Kyocera Electronics' new Ecosys line of printers, however, the cartridge is replaced with a self-cleaning printing drum

coated with superhard amorphous silicon. Users only add toner. Ecosys prices are about 10% higher than comparable cartridge-based units, but Kyocera says its customers will save on supplies.

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