| 摘要 |
PROBLEM TO BE SOLVED: To impede the relative movement of a stapler and a sheaf of sheets in the insufficient state of a space between a head and an anvil. SOLUTION: In this sheet post-treating device 2, the relative movement of the sheaf of sheets and a head unit 31 - an anvil unit 32 is impeded in the case a sensor 350 for detecting the space between the head unit 31 and the anvil unit 32 determines that the space is insufficient.
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