The standard capacity Epson C13T596100 is the cheapest photo black ink cartridge available and as such offers the lowest initial cost in getting the Epson Stylus Pro 7700 and all other compatible printers up and running. This T596100 and the entire range of cartridges have been designed specifically to work with high end Epson printer, where print quality and results are of the utmost importance. With this in mind, purchasing genuine cartridges like the Epson T5961 photo black ink cartridge makes perfect sense.This C13T596100 cartridge is filled with an unbelievable 350ml of premium quality Epson ink that is resistant to fading and a whole host of environmental factors to ensure long lasting, satisfying prints.