Bubble Jet printers utilize an ink ejection process that is totally different from other printing technologies. Quality of print is the deciding factor for many purchasers of printers and because Canon inks, ink cartridges and printers are designed together to perform at optimum printing quality, Canon recommends using Canon genuine ink for your Canon printer. * Economical system--keep the cartridge, replace the color * Individual color tank for BC-31e color ink-jet cartridge * Bright colors * Increased optical density * For Canon BJC-3000, BJC-6000, and S-400 series printers