Toshiba e-studio 450 Operator's Manual page 273

Single-staple Finisher (MJ-1022)
1
Pull the lever and move the finisher away
carefully from the equipment.
2
Take out the staple cartridge.
3
Remove the empty staple case from the
staple cartridge.
4
Set the new staple case.
- Push a new staple case into the staple cartridge until it clicks.
- Do not remove the seal holding the staples before the staple case
is set in the cartridge.
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