Compatible with PIXMA PRO-1 Printers Larger individual ink tanks provide greater value as less time is required replacing inks, that way more time can be spent printing. Part of Canon's 12 LUCIA Pigment Ink System that helps professionals achieve gallery-quality result by expanding the color possibilities, the PGI-29 LUCIA Ink Tanks are approximately 155% larger than previous ink tanks, and almost 40% larger than the ink tanks used by select competitors Don’t be fooled by imposters - look for the Canon logo on all ink packaging to ensure you’re buying Genuine Canon Ink for outstanding quality and performance you can rely on.