A:
It will work if you are going to use it in one of the Canon printers for which it is listed. To be frank, I have no idea why that disclaimer is included; there must be a reason for it; but I don't know of any Canon printers using these cartridges that require print-head replacement merely because the ink has run out. Check your manual to be absolutely sure, but I don't think you have anything to worry about.
Answered on 8/25/2009 by Don, retired IT guy from Ellicott City, MD