| 摘要 |
PROBLEM TO BE SOLVED: To prevent oblique-folding of a recording sheet bundle, by making a total height of a sheet post-processing device corresponding to an image forming device, and by correcting a skew of the recording sheet bundle so as to accurately abut the recording sheet bundle on a folding part stopper even if the recording sheet bundle obliquely slides on a stack stand downward. SOLUTION: A feed means for feeing saddle-stitched recording sheets S has a pair of feed rollers 62 (621, 622) for feeding the saddle-stitched recording sheets S to a recording sheet positioning means 65 of a fold means 60. When the saddle-stitched recording sheets S enter into between the feed rollers 62, the feed rollers 62 are kept in a halt state so that a front end part of the saddle- stitched recording sheets S abuts on peripheries of the feed rollers 62 to correct a feed skew of the saddle-stitched recording sheets S. Next, after a prescribed time passes, the feed rollers 62 are driven so that the feed skew-corrected saddle-stitched recording sheets S are fed to the recording sheet positioning means 65 of the fold means 60. |
