means for applying such a potential to {HEAD ~ all} of {TAIL ~ said plurality} of electrodes that surface areas beneath said electrodes each become an accumulation state to thereby inject all of charge into said substrate; and 
of
means for applying such a potential to { HEAD ~ all } of { TAIL ~ said plurality } of electrodes that surface areas beneath said electrodes each become an accumulation state to thereby inject all of charge into said substrate ; and
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH