Fig. 4-25 Drum Assembly Main Components - Canon NP-70 Service Manual

4-20
NP-70
4.4 DRUM ASSEMBLY
4.4-1
OUTLINE OF ASSEMBLY OPERATION
The Drum t~ssembly is located in the middle portion of the copier body. The photosensitive
drum rotates on a shaft which is held by a bracket mounted on the rear of the copier. The
front end of the drum shaft is supported by a plate, which is removable so that the drum can
be easily taken out of the copier.
The photosensitive drum and the drum gear are mounted on the same shaft. Although the gear
and drum are not bolted directly together, they are held in fixed relationship to one another
by a stud protruding from the gear. This stud engages a notch in the rear drum flange when
the gear (and its attached components) and the drum (and its attached components) are placed
on the shaft together.
4.4-2 ASSEMBLY MAIN COMPONENTS
Drum Shaft
Rear Drum
Shaft Holder
Drum Unit
Front Holder &
Mounting Plate
Fig. 4-25 Drum Assembly Main Components
Drum Gear
Second Printingtilune, 1974
© CANON INC.