| 摘要 |
In an image-forming apparatus, which discharges to a stacker a sheet on which an image has been formed, the sorting of printed matter is performed on the stacker without providing optional equipment. Because of being constituted so as to independently drive a plurality of discharging rollers (30, 31), which discharge a sheet (100) to a stacker (19), and such that a controller (50) differs the driving of this plurality of discharging rollers for a normal mode and an attitude control mode, sorting of printed matter can be performed on top of the stacker with a single paper feeding means and a single stacker without providing optional equipment. Further, because the driving of the discharging roller of the one side is stopped for a predetermined period of time during attitude control, and a sheet is rotated using the roller thereof as a pivot point, it becomes possible to perform stacking easily and stably even for multiple types of media for which the stacking angle was unstable with a method, whereby paper discharging is performed by differentiating the speed of the right and left rollers.
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