1. Koobiyuhu waxa uu isticmaalaa sifooyinka suurtagalka ah ee kooraska indhaha si uu u dalacsiiyo kondhomiyaha indhaha iyada oo aan iftiin lahayn, si dusha sare loogu dallaco, ka dibna iyada oo loo marayo mabda'a sawirka indhaha, sawirka asalka ah ayaa lagu sawiraa muraayadaha indhaha.

2. Qaybta sawirku ma iftiimiso, sidaas awgeed dusha sare ee kaariyaha iftiinka ayaa weli leh lacag, halka aagga aan muuqaal lahayn uu iftiiminayo, sidaas darteed kharashka dusha sare ee iftiinka iftiinka wuxuu dhex maraa dhulka substrate-ka, si markaa Kharashka dusha sare ayaa baaba'aya, sidaas darteed samaynta sawirka daahsoon ee elektrostatic.

3. Iyada oo loo marayo mabda'a elektrostatic, toner oo leh khidmad ka soo horjeeda polarity ayaa loo isticmaalaa si loogu beddelo sawirka daahsoon ee korantada ee dusha sare ee kaari indhaha oo loo beddelo sawirka toner ee dusha sare ee kaari indhaha. Iyadoo loo marayo mabda'a elektrostatic, sawirka toner ee dusha sare ee kormeeraha indhaha ayaa loo wareejiyaa dusha warqadda nuqulka si loo dhamaystiro habka aasaasiga ah ee koobiyeynta.