A second IC is interfaced to the processor and, together with the processor, can be used to authenticate {TAIL ~ the first IC} and {HEAD ~ therefore the ink cartridge} 
A second IC is interfaced to the processor and , together with the processor , can be used to authenticate { TAIL ~ the first IC } and { HEAD ~ therefore the ink cartridge }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD