Here are our Genuine Canon ink cartridges for use in the Pixma MP550 Photo Printer. The Pixma MP550 utilizes the CLI-221 and the PGI-220 series ink tanks for black and color. You can expect perfect print quality when using Genuine Canon ink tanks. The Canon Pixma MP550 is capable of producing borderless 4x6 inch photo prints in approximately 41 seconds. The print speed for black text is 26ppm and 17ppm for color. Using Genuine Canon ink cartridges for the Pixma MP550 ensures the best print quality.