II. DEVELOPING ASSEMBLY/DRUM CLEANERA. OutlineThe copier is designed in such a way so that its developing assembly is manuallylocked/released together with its rail when a locking lever is operated.The developing cylinder, the toner stirring roller inside the developing assembly, andthe blade inside the drum cleaner are rotated by the drive of the main motor (M1).The level of toner remaining inside the developing assembly is monitored by a tonersensor (TS1).The waste toner gathered by the cleaning blade is collected inside the drum cleanercontainer.The copier is equipped with a torque limiter in its photosensitive drum driveassembly. When an excess load is imposed on the photosensitive drum while thephotosensitive drum is rotating (as when the case becomes full of waste toner), the drivefrom the main motor will be cut off to stop the rotation of the photosensitive drum.Reference:The copier does not have a mechanism to detect the level of waste toner inside thedrum cleaner. As a guide, keep in mind that the waste toner case becomes fullwhen about 60,000 copies (same as drum life) have been made of 6% dutyoriginals.CHAPTER 4 IMAGE FORMATION SYSTEMCOPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-21
