| 摘要 |
A sheet processing apparatus comprises: an first stack portion which temporarily stacks a sheet thereon; a first stack portion which is disposed under the first stack portion and stacks thereon a sheet discharged from the first stack portion; a second stack portion which is disposed above the first stack portion and stacks a sheet thereon; a stack reference wall which serves as an abutment reference at an end of the sheet on the second stack portion; and an alignment reference wall which is disposed more upstream in the sheet conveyance direction than the stack reference wall and serves as an abutment reference at an end of the sheet on the first stack portion; wherein the second stack portion has such a length that an end of the sheet stacked on the first stack portion cannot project from the second stack portion, as viewed from above in a vertical direction.
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