Wouldn't blood congeal and smell funny after a while if you used it to print on anything? You'd need to keep it hot in the printer to prevent it from settling, too. Plus there's the fact that blood washes out more readily than other inks. It's more water-soluble, you dig?

I did think of that. Someone might buy it not realising what they've let themselves in for.

I don't know. Isn't that sort of thing deemed to be a bit vampirical?

I'm not a barbarian! I don't want to drink the blood, just hook the entire nation of belgium up to a vast exsanguination device and leech them dry to provide the rest of us with cheap printer supplies

Doesn't matter, the cartridge is only about 69 cents worth of plastic and copper, it is a negligible part of the total cost of the cartridge.

The guy didn't do anything except copy a 2 year old Gizmodo article:
http://gizmodo.com/212444/hp-ink-costs-more-than-human-blood-booze

Don't worry! I wasn't insinuating! I think...
So why the hating on the Belgians? I mean they make nice chocolate and graphic novels here and there. Right? Right?!

Why not just use the blood left over after butchering processed animals?

That isn't too stupid. But there must be... unforseen concequences don't you think Gordon?

I'm not sure I want to place much faith in that chart, considering that it tries to pass penicillin off as a liquid, as pretty much all penicillins are solids. You can have a penicillin solution for IV use, but those are mostly just water so it doesn't really count for much in a price/volume comparison.
That said, it's pretty well known that most cheap inkjet printers use the printer as a loss-leader then make profits by gouging people on ink. Pay a little more upfront for a laser printer and save a lot of money over the life of the printer on toner vs ink cartridges.

*Looks around and shoots Cryxo's left leg with an AK-47.* You were saying?
I think it is much better than draining humans or the deceased. Hell, the animals in slaughter houses don't live long anyways.

Personally, I think we should forget about blood as ink and all go with the used coffee grounds printer.

Curious how the first comment in that article asks if it works with blood.

This will all end in us opening a printing company where we dastardly make babies to harvest their lifesource. Just so you all know, I'm putting my foot down and suggesting we may now have a solution to a few countries' overpopulation...

That would be pretty smart. We could get the factories that cut up the meat for fast food restaurants to help us. It's not like they need the blood, or want to keep it.

No need to import or create new sources if you know where to look. First we fix the stray animal problem by rounding up all of the cats and dogs, draining their blood and feeding them to the homeless. When we run out of enough animals we turn our focus on the homeless people. While draining their blood we feed them to the stray animals to increase the population again. It's a renewable source!

Generally the cheaper the printer is, the more expensive the ink becomes. They got to make money on something, and that is certainly a smart way to do it. If you want a economic printer, then you got to buy a laser printer, preferably a LED printer.