Canon imagePRESS 1135 Series Service Manual page 166

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Technology > Pickup / Feed System > Active Registration Area Control / Function > Skew Correction Control
<Skew registration correction step>
Step 1 to 3: First skew correction
Step 4 to 6: Second skew correction
Step 1
The machine calculates the skew degree of paper from the time difference between when the
paper reaches the primary skew sensor (front) and the primary skew sensor (rear).
Timing: When the leading edge of paper reaches the primary skew sensor (front) and the
primary skew sensor (rear).
Skew degree
primary skew sensor (front)
2 Technology > Pickup / Feed System > Active Registration Area Control / Function > Skew Correction Control
<Overhead view>
primary skew sensor (rear)
<Lateral view>
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Step 2
The registration front roller and the pre-registration roller 1, 2 are disengaged.
Timing: Just after the leading edge of the paper goes through the skew correction roller.
skew correction roller (rear)
skew correction roller (front)
registration front roller
MEMO :
When the skew correction is executed, the registration front roller, the pre-registration
roller 1 and 2 interrupt so that they are disengaged.
Different rollers are disengaged depending on the paper size. Refer to Pre-registration
Roller Disengage Control or Registration Front Roller Disengage Control for more
information.
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<Overhead view>
registration front roller
<Lateral view>
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