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Because HP's unique recycling processes are very sensitive to material
contamination, we cannot take back and recycle cartridges from other
manufacturers. The end products of the recycling process are used in the
manufacture of new products, and HP must ensure the composition of the material
is consistent. To do that, we recycle only HP original cartridges. This program does
not extend to refilled cartridges.
Returned cartridges are separated for purification into raw materials for use in other
industries to manufacture new products. Examples of products made from recycled
HP print cartridge materials include automobile parts, trays used in microchip
fabrication processes, copper wire, steel plates, and the precious materials used in
electronics. Depending on the model, HP is able to recycle up to 65% of the print
cartridge by weight. The remaining parts that cannot be recycled (ink, foam, and
composite parts) are disposed of in an environmentally responsible manner.
HP Deskjet 3840 series printer User's Guide
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