Canon ImageRunner iR8500 Series, Service Manual, Page: 389 / 1122

Chapter 8
8-49
Points to Note When Mounting the Developing Cylinder
Both front and rear sides of the developing assembly and the developing
cylinder are equipped with a magnetic seal plate.
When mounting the developing cylinder, take care not to bring the
magnetic seal plate into contact with the surface of the cylinder to avoid
damage.
F-8-103
8.9.10 Developing Blade
8.9.10.1 Removing the Blade Unit
0007-2364
iR105i/iR105+ / iR9070 / iR85+ / iR8070
1) Remove the four mounting screws [1], and detach the sleeve cover
[2].
F-8-104
2) Remove the screw [3], and detach the polarity plate [4]; then, remove
the five screws [5], and detach the blade [6] together with the
mounting plate [7].
F-8-105
The blade must be adjusted to an extremely high accuracy. Do not
remove it on its own in the field. (Detach it together with its mounting
plate.)
8.9.10.2 Mounting the Blade
0007-2382
iR105i/iR105+ / iR9070 / iR85+ / iR8070
Mount the blade by reversing the steps used to remove it.
1) Butt the blade mounting plate against the developing assembly, and
secure it in place with five screws.
Be sure to put paper over the developing cylinder for protection before
starting to mount the blade.
2) Mount the polarity plate with a screw.
8.9.11 Developing Cylinder Deceleration Clutch
8.9.11.1 Remove the Developing Cylinder Deceleration
Clutch
0007-2711
iR105i/iR105+ / iR9070
1) Remove the high-voltage transformer (DC) assembly.
2) Remove the flywheel.
3) Disconnect the 2 connectors [1], and remove the 5 screws [2]; then,
detach the clutch mounting plate [3].
F-8-106
Magnetic seal plate
[1]
[2]
[7]
[5] [5]
[5] [5]
[6]
[4] [3]
[5]
[2]
[2] [3]
[2]
[1]
[1]