| 摘要 |
An automatic sheet processing device is adapted to be mounted to the sheet outputting portion of an image forming apparatus which outputs sheets one after another and used to receive the sheets successively output from the sheet outputting apparatus, automatically align the received sheets to one another, and then automatically bind the bundle of aligned sheets. The automatic sheet processing device comprises a sheet collecting tray rockably supported for receiving sheets output from a sheet outputting apparatus, tray rocking means for selectively changing over the tray to a first posture in which it is capable of receiving the output sheets from the sheet outputting apparatus and a second posture which is more steeply inclined than the first posture and in which it causes the bundle of sheets to be discharged out of the tray, sheet aligning means for aligning the sheets successively discharged into and piled in the tray in the first posture, binding means for binding the bundle of aligned sheets in the tray after a predetermined number of sheets has been output into the tray from the sheet outputting apparatus, and drive means for operating the tray rocking means on the basis of the operation completion signal of the binding means to change over the tray to the second posture.
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