| 摘要 |
A pressing member pressed against a sheet stack portion can be moved to both a retracting portion where alignment of the sheet by the aligning portion is not prevented and a pressing position where the aligned sheet S 1 is pressed against the sheet stack portion. Moreover, a regulation member for regulating upward movement of the end of the aligned sheet in a conveyance direction can be moved in association with movement of the pressing member to both a retracting portion where alignment of the sheet S 1 by the aligning portion is not prevented and a regulating position where upward movement of the end of the aligned sheet S 1 in a conveyance direction is regulated.
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