Paper Misalignment Occurs When Stapling: Return Guide Sheet Of Finisher-Aa1/Aa2 Has Ridden On Operation Tray Bin - Canon imagePRESS C1 P Service Manual
In the field, when using staple mode, the trail edge of paper was skewed a little at the operation tray, causing paper misalignment.
Cause
Since the return guide sheet [1] (FC5-5549) had ridden on the operation tray bin [2] (FL2-0805), the trail edge of paper hit the tip of the bin [3] when it was
fed to the operation tray bin, causing paper misalignment.