Have you ever been presented with a premature 'change cartridge' warning by your printer? This scenario should be quite familiar: your printer is happily churning out pages with no sign of fading when suddenly the low ink indicator lights-up. The thing then becomes useless until you pop in a brand-new (and probably expensive) cartridge. You might suspect that there's still more ink and you're probably right. It's been widely-reported that printer manufacturers' cut-off system is a little too eager.
Thanks to an article from Slate, an online magazine, I came across fixyourownprinter.com. The site has a forum offering tips on how to squeeze every last drop of ink out of your cartridge. Although Slate's article focuses on laser printers, fixyourownprinter.com also covers many brands of ink-jets.