The Canon ink counter tool estimates your remaining ink usage, and should be reset each time you replace your ink cartridge. This tells your Canon software that the ink cartridges are full, so it can properly estimate the remaining ink levels. Since the ink counter is an estimate, you may have some ink remaining even when the ink counter says your cartridge is full. By resetting the ink cartridge, you can avoid wasted ink, and squeeze every last drop out of the expensive ink cartridge.
1). Click the Windows 7 "Start" button, and type "devices and printers."
3). Right-click your Canon printer in the section labeled "Printers and Faxes," and select "Printer preferences."
4). Click the "Maintenance" tab of the "Printing Preferences" window.
5). Click "Ink Counter Reset."
6). Check the ink cartridges you wish to reset, such as "Black" or "Color." You may have multiple color tanks corresponding to different colors.
7). Click "Execute" to reset the checked ink cartridges.