Moqapi ke phofo ea tšepe. Karolong e ntseng e tsoela pele, toner e lefisoa ka ho ferekana le moqapi. Ka mor'a hore drum ea opc e tjhaje, e fapane ka motlakase le toner. Joale, ka lebaka la khoheli ea liqoso tse ntle le tse mpe, toner e ka adsorbed ho moropa oa photosensitive ho etsa setšoantšo sa electrostatic latent, ebe ka ho potoloha Ribone e fetisetsa pampiring ho etsa setšoantšo.