40718401TH Rev.5 42 /2.6 Toner Low Detection• DeviceThe Toner Low Detection device consists of a stirring gear which rotates at a constant rate, a stirringbar and a magnet on the stirring bar. The stirring bar rotation is driven by the link to the gouged portionin the stirring gear.• OperationToner Low is detected by monitoring the time interval of the encounter of the magnet set onthe sensor plate and the magnet on the stirring bar.Magnet GougedportionStirring Bar Stirring GearToner SensorSensor PlateStirring Gear SectionStirring BarSensor PlateStirring BarOperation during Toner Full state• The stirring bar rotates due to the mechanicaltransmission of energy originating from the inter-locking with the stirring gear.• Even when the magnet on the stirring bar reachesthe maximum height, the stirring bar is pushed bythe stirring gear, since the other side is beingdipped in the toner.Operation during Toner Low state• When the stirring bar reaches the maximum height,it falls to the minimum height due to its own weight,since there is no resistance provided by the toneron the other side. Because of this, the time intervalduring which it is in encounter with the magnet ofthe sensor plate becomes longer. By monitoringthis time interval, Toner Low state can be de-tected.
