After following all instructions that were provided with our printer ink refill kit as instructed, it may be necessary to clean the print head if your canon printer ink cartridge is not printing as desired. This can be done by pouring hot distilled water into a cup or dish approximately 1/4" deep.  It is important NOT to get any water into the canon printer ink cartridge itself.  Place the "Print-Head" (Bottom portion of the ink canon ink cartridge where the ink exits the ink cartridge) in the HOT distilled water and let soak for 1 minute. You will see the water solution start to cloud as the black ink is heated and released from the canon ink cartridge. 

You will then need to place a dry paper towel in the palm of your hand. Place the print head of the ink cartridge into the paper towel and hold it there for a few seconds.  Remove the print head from the paper towel. You should see a narrow black line where the print head was blotted on the paper towel, you may need to repeat this step till you see a solid black line.  After you see a solid black line your canon BCI-24 printer ink cartridge should be ready to install into your printer and be ready to print. 

After you have completed step 2 and your canon printer ink cartridge is still not producing the proper test results on the printer ink cartridge test using the software supplied with the printer, ensure that you filled the canon BCI-24 printer ink tank with the correct number of CC's as shown on your directions.  Each ink tank MUST have the precise amount of ink injected into the printer ink cartridge when refilling in order for the pressure of the ink cartridge to balance out or the ink sponge to be saturated properly. It may be necessary to remove the ink already injected by using your syringe to draw the ink back out of the canon BCI-24 ink tank and re-inject the proper amount of ink into the cartridge again.