Canon Inner Finisher-L1 Service Manual page 22

2. Technical Explanation
6. The stacked sheets are stapled or staple-free stapled (only when in the relevant mode).
Stapler Unit
Staple-free Staple Unit
7. After being shifted, the paper stack on the processing tray that has been stacked by the assist guide is delivered to the
delivery tray.
Assist Guide
15