- Fully assembled print cartridges.

"We've done everything to raise money - recycling phones, recycling print cartridges, selling stretchy book covers."

HP recovered a total of 118,000 tonnes of electronic products and supplies for recycling in 2009, including 61 million print cartridges.

Photographic paper will be available (with a print cartridge) in 24-sheet packs for about $20.

In Economode, the 4L lays down half the toner used in regular mode, thus extending the life of the print cartridge.

This innovation has economic and environmental benefits as it lowers the amount of wasted ink in print cartridges.

Another factor is the life of the print cartridge, which supplies the engine with the toner it needs to produce images.

And the print cartridge snaps in and out for easy changing.

In the thermal inkjet process, the print cartridges contain a series of tiny chambers, each containing a heater, all of which are constructed by photolithography.

Sales of print cartridges, among its most profitable products, have reached 250 million a year.