Arch Sensor Control - Canon imageRUNNER ADVANCE C350 series Service Manual

2
Technical Explanation > Fixing System > Controls > Arch Sensor control
M04
Fixing Motor
Sensor Flag
Arch Sensor
(PS11)
DC Controller PCB
(UN04)
2 Technical Explanation > Fixing System > Controls > Arch Sensor control
Fixing Film
Pressure Roller
F-2-125

■ Arch Sensor control

Operation:
The Arch Sensor (PS11) detects a paper arch between the transfer nip and fixing nip to
change the drive speed of the Fixing Motor.
1) When the paper's leading edge goes over 65 mm from the secondary transfer nip area
by 65 mm, drive speed of the Fixing Motor is reduced by 1.0% against the process
speed. The reduced speed is maintained until the paper leading edge goes over 80
mm from the secondary transfer nip area.
2) When Arch Sensor (PS11) is ON:
After ON has been detected for consecutive 16 msec or longer, drive speed of the
Fixing Motor is increased by 1.0% against the process speed.
When Arch Sensor (PS11) is OFF:
After OFF has been detected for consecutive 16 msec or longer, drive speed of the
Fixing Motor is reduced by 5.0% against the process speed.
3) The Fixing Motor drive speed switches depending on whether the Arch Sensor (PS11)
is ON or OFF. (Arch Sensor (PS11) repeatedly turns ON and OFF)
4) When the paper's trailing edge goes over the designated distance* from the secondary
transfer nip area, drive speed of the Fixing Motor is increased by 0.8% against the
process speed.
NOTE:
* The value of the designated distance varies depending on the process speed (paper
type).
When the process speed is 200 mm/sec:
When the paper trailing edge is 10 mm before passing through the secondary transfer nip
area
When the process speed is 135 mm/sec:
When the paper trailing edge is 5 mm before passing through the secondary transfer nip
area
When the process speed is 100 mm/sec (other than envelopes):
When the paper trailing edge passes through the secondary transfer nip area
When the process speed is 100 mm/sec (envelopes):
When the paper trailing edge goes over 10 mm from the secondary transfer nip area
5) Go back to step 1 in the case of continuous printing. In case of printing a single sheet,
the Fixing Motor is stopped after the paper trailing edge passes through the Delivery
Sensor. The machine shifts to perform the last rotation operation in case of printing
small size paper.
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