Our compatible CLI-221 / 2946B001 black inkjet cartridges for your Canon printers are manufactured to meet the same ISO-9001 original specifications and performance standards as the Canon CLI-221 OEM cartridges. Our compatible CLI-221 ink cartridges contain a brand new chip which allows you to track your printer ink levels. Other companies offer CLI-221 inkjet cartridges with no attached chip and force you to turn off your ink level gauges. This process is time consuming and ink levels don't appear on the computer. Benefit from tracking ink levels with our compatible CLI-221 cartridge with a new chip that shows correct ink levels. The use of compatible replacement Inkjet Cartridges and supplies does not void your Printers Warranty. For use in: PIXMA MP620, PIXMA iP3600, PIXMA MP640, PIXMA MP990, PIXMA MX860, PIXMA MP980, PIXMA MP560, PIXMA iP4700, PIXMA MP620B, PIXMA iP4600, PIXMA MX870.