Anyone who owns a printer knows well that ink cartridges are a huge rip-off. They are expensive and don’t last long. Or do they? Ars Technica relays study results done with different ink cartridges to see if they are really near-empty when the on-screen nag says so. What they discovered is actually shocking. In a few of their results, when the software told them the cartridge was near empty, it was actually still half-full with at least another 100 pages worth of ink left.
Single ink cartridges aren’t exactly perfect, however. Such cartridges still were reported as empty with an average of 20 percent of their ink left, which means that an entire cartridge worth of ink is wasted for every five which are used. Given the sky-high prices of ink, this is an alarming find.
Source: Ars Technica