II. DEVELOPING ASSEMBLY AND CLEANINGASSEMBLYA. OutlineThe copier’s photosensitive drum, developing cylinder, No. 1 stirring rod, and No. 2stirring blade are rotated by the drive of the main motor (M1).The level of the toner inside the developing assembly is monitored by the tonersensor; when it drops below a specific level, the Add Toner indicator flashes on thedisplay of the control panel.The No. 1 stirring rod serves to supply toner to the developing cylinder and stir thetoner flow layer inside the developing chamber.The No. 2 stirring blade is used to stir the toner inside the toner container and, at thesame time, to supply toner to the developing chamber.The waste toner collected by the cleaning blade is forwarded by the waste toner feedblade for collection inside the waste toner assembly.Figure 4-201COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 4 IMAGE FORMATION SYSTEM4-22M1Cleaning bladeWaste tonerfeeding bladeWaste tonerassemblyPrimary chargingrollerDrum cartridgePhotosensitivedrumToner sensorToner containerDevelopingcylinder No. 1stirring rod No. 2 stirring bladeToner leveldetection PCBTorque limiterMain motor/Main motordriver PCBMotor drive signalDC controller PCBToner out signal(TEP*)
