Canon imagePRESS 1135 Series Service Manual page 154

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Technology > Pickup / Feed System > Pick-up Area Control/Function > Air Pickup Fan Control
■ Air Pickup Fan Control
This machine controls fans related to air pickup to support variety of paper types and
environments.
● Paper suction fan
The paper suction fan, after switched ON, the airflow adjustment is not executed.
The movement of paper suction is switched by the opening/closing of suction shutter.
Suction shutter is opening/closing by ON/OFF the deck pickup solenoid.
● Air separation fan and air floatation fan
• Air separation fan 1
• Air separation fan 2
• Air floatation fan 1
• Air floatation fan 2
• Air floatation fan 3
The air separation fan and the air floatation fan adjust the airflow in order to decrease the
individual gap between device and deck.
When the power is ON, the deck is closed, and when there is no paper, the auto airflow
adjustment of air floatation fan and air separation fan are performed in the same time.
In the auto airflow adjustment, the rotation number of the fan is adjusted in order to make
it the target value, and memorized in the main controller PCB memory. And the result is
updated each time automatic airflow adjustment is executed.
During the pickup, airflow is adjusted by changing the number of fan and number of rotation,
according to the following condition:
• The result of auto airflow adjustment.
• Information of paper specified in User mode (paper length, paper width, paper weight,
surface texture).
• Temperature and humidity detected by environment sensor (absolute moisture amount).
If auto airflow adjustment cannot be executed due to the condition such as paper existence
in the deck when power ON, airflow is adjusted using the adjustment result stored in the main
controller PCB.
2 Technology > Pickup / Feed System > Pick-up Area Control/Function > Air Pickup Fan Control
MEMO :
When double-feed occurs with particular types of paper even if the auto airflow
adjustment is executed, airflow of the air floatation fan can be manually increased.
(Refer to page 6-20)
1) Go through the following in Service Mode to select "1" for IMGC-ADJ: COPIER >
OPTION > DSPLY-SW > IMGC-ADJ.
2) Select the following in User Mode: [Additional Functions] > [System Settings] > [Paper
Type Management Settings].
3) Create a duplication of the target paper type.
Existing paper types cannot be edited.
4) Edit the duplicated paper type.
"Airflow adjustment of paper floatation fan" enables to adjust Airflow 11 levels from 1
through 11 (initial value: 6).
5) Go through the following in User Mode: [Additional Functions] > [Common Settings]
> [Register Paper], and register the edited paper type for the pickup cassette to use.
● Side air floatation fan
• Side air floatation fan 1
• Side air floatation fan 2
On the side air floatation fan, airflow is adjusted by changing the number of fan and number
of rotation (switch the voltage), according to the following condition:
• Information of paper specified in User mode (paper length, paper width, paper weight,
surface texture).
• Temperature and humidity detected by environment sensor (absolute moisture amount)
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