The new inkjet platform, which will initially be geared toward the high end of the market, will incorporate the print head in the printer itself rather than in the inkcartridge.
As laser printers push inkjet printers out, HP (the inkjet supplies market leader) will likely see a decline in its inkcartridge per printer sales until the shift away from inkjet stabilizes.
You could throw it like a small javelin, or stab it into a piece of steak instead of using a fork, or you might take the inkcartridge out of the pen and fill the hollow shell with sand (just because you like sand).
It is a user replaceable part and they expect the consumer to replace it when they have burn through it. (think ink-jet cartridge) These TVs are not designed to be on 6-8 hours a day but if you are going to buy one and use it as a primary TV, make sure you know how many bulbs the warranty will replace.