Mugihe cyoza imashini icapa flexo, ubwoko bwamazi yoza amazi agomba gutoranywa agomba gutekereza kubintu bibiri: kimwe nuko kigomba guhuza ubwoko bwa wino yakoreshejwe;ikindi ni uko idashobora gutera kubyimba cyangwa kwangirika ku isahani.Mbere yo gucapa, isahani yo gucapa igomba guhanagurwa hamwe nigisubizo cyogusukura kugirango harebwe niba hejuru yicyapa cyacapwe hasukuye kandi nta mwanda.Nyuma yo kuzimya, isahani yo gucapa igomba guhita isukurwa kugirango wirinde ko wino yacapwe yumye kandi igakomera hejuru yicyapa.