Our compatible version of the Canon 0779C001AA ink cartridge maintains the same incredible 700ml capacity of the photo cyan original, but is available at a lower price. The manufacturers of this alternative to the genuine Canon PFI-1700PC ink cartridge have made significant changes to the design of the cartridge to avoid infringing upon the manufacturers patents, but still allows photo cyan pigment ink to flow easily from the cartridge.The aforementioned pigment based photo cyan ink within his compatible version of the Canon 0779C001AA has been formulated to offer an exceptional quality of print, whilst the results may differ slightly, we are 100% confident that you will be satisfied with the results. Running high end machines like the Canon ImagePROGRAF PRO-4000 will never be cheap, but this compatible PFI-1700PC is a small step towards making your printing more cost effective.