New HP 363 Cleaning Cartridges Released
All the transport tubes that carry the ink from the ink cartridge to the printers printhead will be flushed clean. Also the actual printhead will be cleaned in the same way.
So all you have to do is install the cleaning cartridges as you would normal ink cartridges, then run the printers cleaning system in the maintenance menu, or simply print 5 colourful pictures.
Don't worry that the pictures look awful, you are cleaning not printing.
The cleaning cartridges can then be sealed and used again and again, normally about 5 times. They will not dry up like normal ink cartridges as they do not contain ink. The cleaning solution will evaporate, so seal the in a plastic bag and store in a cool place.