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