| 摘要 |
PROBLEM TO BE SOLVED: To accurately detect a height from a central part of paper to both ends, and to perform accurate post-processing in a paper post-processing device based on the detection result. SOLUTION: The curl measurement device is provided with a first guide partαprovided as a part of a conveying passage on the upstream side of the conveying passage for conveying the paper 12 delivered from an image forming device body to the paper post-processing device 4 for performing predetermined post-processing relative to the paper 12 and guiding the central part 12b of the delivered paper 12 in a flat state; a second guide partβprovided as a part of the conveying passage on a downstream side lower than the first guide partαand guiding the whole width of the paper 12 in the flat state; and a detection means for detecting the height from the central part 12b of the paper 12 to both ends before it reaches the second guide partβin such a state that it is guided by the first guide partα. COPYRIGHT: (C)2009,JPO&INPIT
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