Our compatible version of the Canon PFI-1700PBK ink cartridge maintains the same incredible 700ml capacity of the photo black original, but is available at a lower price. The manufacturers of this alternative to the genuine Canon 0775C001AA ink cartridge have made significant changes to the design of the cartridge to avoid infringing upon the manufacturers patents, but still allows photo black pigment ink to flow easily from the cartridge.The aforementioned pigment based photo black ink within his compatible version of the Canon PFI-1700PBK 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 0775C001AA is a small step towards making your printing more cost effective.