| 摘要 |
<p>Provided is a sheet folding apparatus for folding a sheet stack (Sa), including a sheet stack support member (1) for supporting a sheet stack (Sa) by being abutted against a lower edge of the sheet stack (Sa), an abutting member (8) for folding the sheet stack (Sa) by making the sheet stack (Sa) supported by the sheet stack support member (1) abutted against a leading edge of the abutting member (8), and paired folding rollers (3) for sandwiching the sheet stack (Sa) folded by the abutting member (8) to fold the sheet stack (Sa) at a fold position, in which a position where the sheet stack (Sa) is abutted against the leading edge of the abutting member (8) with respect to the fold position is varied based on sheet stack information.
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