Canon iR3570 Service Manual page 320

Chapter 8
An image is formed for the 2nd side of the 1st sheet. The 2nd sheet is picked up.
The 1st sheet is turned over and moved to duplexing registration. An image is formed for the 2nd side of the 2nd sheet.
The 1st sheet is moved for registration once again. The 2nd sheet is turned over and moved for duplexing registration. The 3rd sheet is picked up.
8-34
1
2
F-8-50
1
2
F-8-51
2
1
3
F-8-52