The Q2347A has indeed 16 contacts, but 2 are not connected and 2 are for power supply. That leaves 12 pins, one for each nozzle. If you are referring to the electronics. The 4067 has 16 outputs, but only 12 are used. BTW, I refer to the Q2347A as the Q2299A. It is the same component, but it might cause some confusion.
Was the thing about the photo a conclusion or a question. If it was a question I will add a picture to this thread.