Our Canon Ink Cartridge replacements for the Canon PIXMA MP640R cartridges are designed and manufactured by an ISO-9001 facility and match Genuine Canon name-brand cartridges at a fraction of the cost. These Canon PIXMA MP640R Ink Cartridges will provide optimal print quality and page yields. We've been selling products like compatible Canon PIXMA MP640R Printer Ink Cartridges for over 13 years and think you'll find great value in comparison to the Canon OEM PIXMA MP640R supplies.