Here How to Disabling Low Ink Level Notification for Canon IP and MP, the method to reset ink level notification:
Push “resume” for 5 seconds for canon IPXXXX. For canon MPXXX you must enter to service mode.
Push Power switch then remove power cord.
Insert plug power cord while pressing “power switch” at the same time.
Push Start/reset by step 2 continue Wait display shown “0″
Push + change display from “0″ to “1″
Push color button 2 times
Push Power switch again , Printer will print 1 page
Open cover
Unplug power cord
Take out ink cartridge #40 and #41
Insert plug again
Push power switch
Open cover (scan cover)
Insert ink cartridge #40 and #41 again
Enter to service mode for canon MPXXX
With the printer powered off but connected to a power source, press the Power button while pressing and holding the Stop/ Reset button.
When the Power is lit, press the Stop/Reset button two times while pressing and holding the Power button.
When releasing the Power button and the Stop / Reset button (regardless of order), the printer will move into a service mode. (Waiting for menu selection)