Canon Color ImageRunner C3380 Reference Manual page 489

4
Pull out the staple cartridge containing the jammed staples,
holding it by its left and right sides.
5
On the staple case, push down Part A, and push up Part B.
B
6
Remove any jammed staples, and return Part B to its original
position.
A
B
Clearing Staple Jams
8
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