6 - 253.2 XERO CRU3.2.1 Main functionXERO CRU consists of Belt, Belt Cleaner, Drum, Drum Cleaner, 1st BTR and toner collectionbox of each cleaner, and Crum, Sensor TR0, Sensor ADC, Sensor IBT Retract, SensorEnvironment, P/R Motor, IBT Brush Motor, IBT Cleaner Retract Motor and BCR RetractSolenoid are attached inside this device.T XERO CRU• Belt is used to transfer toner image of each color developed on drum surface to IBT Belt by1st BTR for each color, and to form completed toner image made by overlapping 4 colors.After the completed toner image of 4 colors is created, the completed toner image istransferred onto paper (2nd transfer) by negative charge induced by 2nd BTR.• After toner remaining on the surface of belt is scraped off by Cleaning Blade in Belt Cleaner,it is absorbed by positive voltage charged brush and collected in the disposal toner box.Sensor IBT RetractIBT CleanerRetract MotorCRUM XEROIBT Brush MotorSensor TR0P/R MotorSensor EnvironmentSensor ADCFull Toner SensorCleaning BladeCleaner BrushDrum Cleaner1ST BTRDrumBeltLeg_Sec06_056FBChapter 6 Principles of Operation
