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II. DEVELOPING ASSEMBLY AND CLEANING
ASSEMBLY
A. Outline
The copier’s photosensitive drum, developing cylinder, No. 1 stirring rod, and No. 2
stirring blade are rotated by the drive of the main motor (M1).
The level of the toner inside the developing assembly is monitored by the toner
sensor; when it drops below a specific level, the Add Toner indicator flashes on the
display of the control panel.
The No. 1 stirring rod serves to supply toner to the developing cylinder and stir the
toner flow layer inside the developing chamber.
The No. 2 stirring blade is used to stir the toner inside the toner container and, at the
same time, to supply toner to the developing chamber.
The waste toner collected by the cleaning blade is forwarded by the waste toner feed
blade for collection inside the waste toner assembly.
Figure 4-201
COPYRIGHT
©
1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
4-22
M1
Cleaning blade
Waste toner
feeding blade
Waste toner
assembly
Primary charging
roller
Drum cartridge
Photosensitive
drum
Toner sensor
Toner container
Developing
cylinder
No. 1
stirring rod
No. 2 stirring blade
Toner level
detection PCB
Torque limiter
Main motor/
Main motor
driver PCB
Motor drive signal
DC controller PCB
Toner out signal
(TEP*)