Consumers are often perplexed about how few prints they get from ink jet cartridges before they have to buy news ones. Some cartridges will result in “low ink” warnings, others will just quit printing properly, after only a few uses – if the caretridge isn’t used regularly. The problem is that the ink dries or gels near the print head and clogs the printer. Some inkjet companies, such as Lexmark, are said to actually put gelling agents in their inks (this is according to the experts at Cartridge World), which almost guarantees that you will have to buy a new cartridge if your old one sits unused for more than a couple weeks. But the Cartridge World inks that are supposed to be so much better don’t seem to do any better, as far as I can tell, for printers that aren’t used much.
If you have an ink jet printer, print something in color at least one a week. You’ll use more ink, but you’ll probably use fewer ink catridges that way.