ENTWICKLUNGSVORRICHTUNG FUER EIN ELEKTRONISCHES KOPIERGERAET

摘要

A developing device supplies red toner and black toner to a photosensitive layer. The developing device comprises a toner resupply mechanism which is attached to a receptacle to replenish selectively the shortage of the red or black toner in the receptacle corresponding to consumption thereof. The toner resupply mechanism includes a housing having a connecting port connecting the receptacle and first and second chambers to store therein the red and black toners, respectively. A roller for resupply is reversibly rotatably disposed in the connecting port.