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