Canon C9075 PRO Operating Manual page 195

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
A
6
Remove any jammed staples, and return Part B to its original position .
7
Return the staple cartridge to its original position .
B
2-107
Clearing Staple Jams
2