The printer is tell me to ionstall the pint head

Assuming that you have actually read or looked at the installation instructions and been using this printer this error usually means that there's a problem with the printer being able to "sense" or connect to the printhead.

Best way to resolve this is to check the following:

1. Remove all the cartridges and remove the printhead from the printer
   
   
2. Check the printhead copper contacts (found at the back of the printhead) and remove any ink smears, hair or other foreign material that may be causing connectivity issues
   
   
3. Check that the printhead carriage (the bit that the printhead normally sits in) has no damaged or broken contact pins.. These can be damaged when a printhead is forced into the carriage.

If you've checked and resolved or found none of these to be a visible issue, try turning off the printer, turning it back on and then installing the printhead (without cartridges!) and see if the printer is recognising it..

Then try installing the cartridges carefully and see if that solves the problem.

If not, it's probably either a blown printhead in which case a new printhead can be purchased from Canon or a service center.. or you have damage to the printer that you cannot see and perhaps it's time to replace the printer or take it to a service center.

Hope that helps.