In 2005, 1.3 billion inkjet cartridges were sold, worth $30 billion. One U.K. estimate put inkjet ink price per millimeter at seven times greater than that of Dom Perignon. Unlike laser printer toner cartridges, inkjet printer cartridges do not indicate how many pages they will print. Instead, an inkjet cartridge’s lifespan is largely guesswork. However, knowing a bit about inkjet cartridge ink can refine such guestimates. Writer Bio
