Print Operation Description B - 19 OKIFAX 5300/5600Service Manual, P/N 59278301B2.3.3.1 Toner Low DetectionCompositionThe device consists of the stirring gear which rotates at a constant rate, the stirring bar and themagnet on the stirring bar. The stirring bar rotates through the link on the protrusion in thestirring gear.The configuration of stirring bar in the figure below may differ. The principle of toner detection,however, remains the same.OperationToner Low is detected by monitoring the time interval between the encounter of the magnetset on the sensor lever and the magnet on the stirring bar.Stirring GearSectionSensorLeverTonerSensorSensorLeverStirring BarStirring BarOperation during toner full state• The stirring bar rotates due to interlockingwith the stirring gear.• Even when the magnet on the stirring barreaches the maximum height, since theother side is being dipped in the toner, thestirring bar is pushed by the stirring gear.Operation during toner low state• When the stirring bar reaches the maximumheight, since there is no resnstance providedby the toner on the other side, it falls to theminimum height due to its own weight.Because of this, the time interval duringwhich it is in encounter with the magnet ofthe sensor lever becomes long. By monitor-ing this time interval, toner low can bedetected.Stirring Bar Stirring GearMagnet Protrusion
