Theory of operation ver. 2.0 Nov. 2007
14. Toner collecting section
51
bizhub C10
Composition/Operation
14.3.2
Waste toner full detection system
• A waste toner near full condition is detected using the output state of the waste toner
near full detect board/led.
• A waste toner near full condition is detected by letting the light emitted from the LED
mounted on the waste toner near full detect board/led travel through the light guide.
• To prevent false detection, the drum cartridge is provided with the toner agitating screw
that ensures that the waste toner is evenly stored.
A. Waste toner near full condition detection control
• Light emitted from the LED mounted on the waste toner near full detect board/LED is
made to travel through the light guide. This light is blocked if the waste toner reaches an
upper limit, which allows the machine to determine that there is a waste toner near full
condition.
• To prevent false detection, the drum cartridge is provided with the toner agitating screw
that ensures that the waste toner is evenly stored.
B. Waste toner full detection control
• The machine determines that there is a waste toner full condition when 200 images* are
reached after a waste toner near full condition has been detected. (*: The initiation of any
new print cycle is prohibited when 50 full-color printed pages are produced after the
waste toner near full condition has been detected.)
• When light of the LED on the waste toner near full detect board/led is unblocked after the
drum cartridge has been replaced, the waste toner full condition is reset.
Normal Condition
LED
Waste Toner
LED Light
Light Guide
At Waste Toner Near Full Condition
4139to2087e0
W
aste Toner
N
ear F
u
ll
Detection Board
Light G
u
ide
W
aste Toner Detection Area
4139to20
8
6e1
Confidential – for internal use only, do not distribute