Canon iR4570 Series Service Manual page 366

Chapter 8
An image is formed for the 1st side of the 4th sheet. The 5th sheet is moved for duplexing.
The 4th sheet is delivered. The 5th sheet is moved for registration once again.
8-50
3
2
1
4
4
5
F-8-54
4
3
2
1
5
F-8-55
4
3
2
1
5
5
F-8-56