Developer roller with {TAIL ~ semiconductive additive} comprising {HEAD ~ a rubber body} containing soyadimethylethyl ammonium ethosulfate or trimethylammonium methylsulfate 
Developer roller with { TAIL ~ semiconductive additive } comprising { HEAD ~ a rubber body } containing soyadimethylethyl ammonium ethosulfate or trimethylammonium methylsulfate
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH