Printer head cleaning

How to clean head printer?
Shrink up the ink to the head nozzle until come up to all the hole of nozzle. Shrink for 1 until 3 times. It is time to take a bath your head cartridge with cleaning liquid that you can buy in computer store. Take a rest this head one or two days in liquid water. The ink will flow up to the cleaning liquid, and then put back in commonly water. The dirt at the head cartridge will be flush, and your head nozzle must be clean. Be careful, don't wet the circuit in head cartridge. If you do, your cartridge not compatible anymore. With other word your cartridge is death, go to computer shop to buy new one.