Canon U.S.A., Inc. Informative - If you cannot print with just the black ink
If your color cartridge is out of ink on a Canon MP470 printer and all you want to do is print BLACK, and your printer says replace color ink cartridge. All you have to do to continue printing in black is first go to the printer settings. click start>control panel> Printer/fax>, select your printer and right click>select Properties>, select Maintance Tab, select ink cartidge setting, select black ink only. Next go back and select GENERAL TAB> then look down and click Printing Preference. Select Plain Paper and click OK.
Lastly go to your printer "MP470 canon Printer". You should see on your little LCD telling you to replace your color ink cartridge..."whatever"! Do this lastly... press and hold the stop/reset key for about 5 seconds or more and the LCD screen will change, and on your monitor a prompt will come up. You should be now set to just print in BLACK! I hope this helps because its tax time and no time for BS! Good LUCK!!!