Photosensitive Drum Cleaning; Outline; Waste Toner Full Detection - Canon iR2020 Series Service Manual

Chapter 6

6.9 Photosensitive Drum Cleaning

6.9.1 Outline

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Toner reaming on the photosensitive drum after image transfer is scraped by the photosensitive drum cleaner blade and is fed in the waste toner box.

6.9.2 Waste Toner Full Detection

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
The waste toner collected by the cleaner blade is fed to the waste toner box using the waste toner feed screw in the drum unit. A torque limiter is provided at the
end of the waste toner feed screw is provided with a torque limiter. When the waste toner box is filled with waste toner, the torque limiter goes on to stop the waster
toner feed screw. As a result, the sensor flag of the waster toner full sensor (SR206) is pushed intermittently, reporting the waste toner full condition to the DC
controller PCB.
[1] Cleaner blade
[2] Waste toner stirring rod
[3] Waste toner box
[4] Torque limiter
[5] Drum
MEMO:
The waste toner box is capable of storing about 630 g of toner.
6-8
[1]
[2]
[5]
SR206
F-6-15
[3]
[4]
0010-4292
0010-4294