Even if {TAIL ~ ink} flows backward from {HEAD ~ the ink storage chamber}, it is stored in an ink storage space, thus preventing the clogging of an air passage 
Even if { TAIL ~ ink } flows backward from { HEAD ~ the ink storage chamber } , it is stored in an ink storage space , thus preventing the clogging of an air passage
OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH