I received the following message back from Canon. Does it seem reasonable to you? I always understood that one should not take out the print head although it is suggested here? Any comments? Paul Begin forwarded message: > > Dear Paul Thomas > > Thank you for your E-mail inquiry regarding the Canon PIXMA iP3000 > > Replacing the ink tank(s) when they are not empty may affect the ink > sensor on the printer. If you have replaced an ink tank when it was > not empty, the status monitor may continue to read the same level of > ink that it was reading in the other ink tank. You may take the ink > tanks and the print head out and put them back in. If the problem > persist, I recommend uninstalling the printer driver. Once you have > uninstalled the printer driver, you can download and install the > updated printer driver from the web site listed below. > > http://canon.ca/english/index-customersupport.asp?pid=290 > > Please follow the procedure below to uninstall the driver and > re-install: > > 1) Double-click the hard drive icon. > 2) Double-click the Library folder. > 3) Double-click the Printers folder. > Take the Canon folder and dump into the trash. > Then empty the trash and restart the computer. > Now try to re-install the downloaded driver. > > If the ink sensor does not reset itself, you will need to leave the > situation as it is until the ink tank runs completely empty. Once it > reads empty and you replace the ink tank, the ink sensor will > automatically reset itself. > > If you continue to experience the same issue, you will need to let the > display read the level of ink until it gives you the message that it > is empty again. Once the ink tank runs empty and you replace the ink > tank with a new ink tank, the ink counter will automatically reset > itself after. > > > > Should you require further assistance, please feel free to email us or > visit our customer support website at http://www.canon.ca > ----------------------------------------------------------- For information about MUGLO: http://www.freewebs.com/muglo -----------------------------------------------------------