Canon imagePRESS 1135 Series Service Manual page 153

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Technology > Pickup / Feed System > Pick-up Area Control/Function > Air Pickup Control
3) The floatation airflow passes through the floatation air duct and blow to the paper from the
3 floatation nozzles.
Several sheets on top are floated.
Floatation nozzle
4) Once a pickup start signal is received, deck pickup solenoid is activated to open the suction
shutter.
By sucking the air around the suction duct to the paper suction fan, the paper is absorbed
to the suction belt.
Because the separation airflow is blown from the 6 separation nozzles through the
separation air duct, only the top sheet is attracted.
Deck pickup solenoid
Suction belt
2 Technology > Pickup / Feed System > Pick-up Area Control/Function > Air Pickup Control
Floatation air duct
F-2-139
Suction duct Separation nozzle
Separation air duct
F-2-140
5) If the paper is attracted to the suction belt at the time of 140 msec after the deck pickup
solenoid is turned ON, the suction belt motor is turned ON to rotate the suction belt.
The suction belt feeds only a single sheet of the attracted paper to the deck pull-out roller.
The attraction state of paper is determined whether the suction end sensor is ON.
Suction end sensor
6) The deck pickup solenoid is turned OFF once the paper's lead edge goes through the pull-
out sensor.
7) If the following conditions are met, pickup operation continues with the procedure 4) and
later.
• 140 msec passed since the trail edge of the preceding paper goes through the pull-out
sensor.
• There is enough sheet-to-sheet distance with the preceding paper.
• The next paper is located where suction is available.
2-105
Deck pull-out roller
F-2-141
Pull-out sensor
F-2-142
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