Provided is a sheet processing apparatus, including: a regulation portion configured to contact with an end edge of a sheet to be conveyed and to regulate a position of the sheet; a position adjustment portion configured to perform position adjustment on a sheet in a direction along an end edge of the sheet of which the end edge is in contact with the regulation portion; a folding portion configured to perform folding processing on a sheet which has been regulated by the regulation portion; and a control portion configured to execute: a first mode of causing the folding portion to perform the folding processing on a sheet which has been regulated by the regulation portion, without causing the position adjustment portion to perform the position adjustment on the sheet; and a second mode of causing the position adjustment portion to perform the position adjustment with respect to the regulated sheet.

A print medium finishing unit may include a load part in which print media is loaded, a stapler stapling the print media loaded in the load part while moving along one side end of the print media, and at least one arrangement member supporting one side end of the print media, wherein the arrangement member protrudes toward a moving path of the stapler to move between an arrangement position supporting one side end of the plurality of print media and an escape position escaping from a moving path of the stapler by receiving a force through the moving stapler. Therefore, a moving path of the stapler has a simple structure.

A post-processing apparatus for post-processing paper discharged from an image forming apparatus comprises: a paper discharging roller for conveying both first and second paper sequentially discharged from an image forming apparatus to an intermediate loading part; a main paddle part for conveying the first and second paper loaded on the intermediate loading part to a compiling region; a reverse roller for conveying, together with the main paddle part, the first and second paper to the compiling region; and a binding part for processing the first and second paper conveyed to the compiling region, the paper discharging roller allows the first paper to stand by on a standby path, and conveys the first and second paper to the intermediate loading part in a state in which the leading end of the first paper protrudes further than the leading end of the second paper.

An example system may comprise a media support including a wall and a base and a restraining extension extending in a first direction to constrain print media, when present, to a space below the restraining extension.

A stacker includes a medium stacking portion for receiving and stacking a medium processed and discharged by a processing unit, a medium butting portion for aligning the medium by contacting a leading end of the medium, and a paddle that includes a feeding portion and is for transporting the medium received by the medium stacking portion in a direction toward the medium butting portion by rotating. Furthermore, the stacker has a first mode in which the paddle stops in a state in which the feeding portion does not contact the medium on the medium stacking portion and a second mode in which the paddle stops in a state in which the feeding portion comes into contact with the medium on the medium stacking portion and is deformed.

A sheet conveying device includes a conveyor, a supporting section which supports a sheet to be fed to the conveyor and a guide section which is provided on the supporting section and configured to guide a sheet to the conveyor. The supporting section includes a first support region and a second support region which support a sheet. The first support region is provided at a position on an upstream side from the second support region in a sheet conveyance direction. The first support region extends substantially horizontally, and the second support region is inclined in a lower direction toward the downstream side in the conveyance direction. The guide section includes a first portion which extends substantially horizontally along the first support region, and a second portion which is connected to the first portion and extends obliquely in the lower direction along the second support region.

A sheet folding apparatus includes a retract path that is positioned on the upstream side of a stacker section for collecting sheets and that branches off from a transport path to enable a sheet carried in the stacker section to be transported in a direction opposite to a carry-in direction, an adhesion unit that is positioned in a junction position of the transport path and the retract path to bond sheets by applying an adhesive, a staple binding unit that binds sheets collected in the stacker section with a staple, and a folding processing section that folds sheets bound with the unit. The retract path is a path for retracting an application position of the preceding sheet with the adhesive applied, in carrying a next sheet in the stacker section, and the staple binding unit is disposed in the stacker section between the adhesion unit and the folding processing section.

A medium discharging device includes a side cursor, a moving unit, a discharge unit, and a side guide. The side cursor is provided in a processing tray and is provided movable in an intersecting direction intersecting a discharging direction of the medium, aligns an end portion of a media bundle in the intersecting direction, and guides the media bundle in the discharging direction when the media bundle is discharged. The moving unit moves the side cursor in the intersecting direction. The discharge unit discharges the media bundle from the processing tray to the discharge tray where the media bundle is placed. When the media bundle is discharged, the side guide is disposed alongside the side cursor in the discharging direction and restricts movement of the media bundle in the intersecting direction, which is discharged by the discharger.

A paper post-processing device includes: a base tray 112 configured to stack paper transferred from an image-forming device; a paper transferring unit including a paper gripper configured to grip a rear end of a paper bundle stacked on the base tray 112, a paper transferring unit configured to transfer the paper gripper; and a stacker tray 103 configured to stack paper transferred from the paper transferring unit, wherein the paper gripper includes an ejector 202 to be fixed, and a gripper 106 rotatably configured about a predetermined angle to the ejector 202, and the paper gripper is configured to grip the several sheets of paper by the ejector 202 and the gripper 106, further including a grip release unit configured to release a grip by the ejector 202 and the gripper 106.

A post-processing device includes a processing tray on which a medium recorded by a recording portion is loaded, and a first paddle which is an example of a transportation member provided above the processing tray and rotating to transport the medium toward the upstream in a transport direction. In addition, the post-processing device includes a roller which is an example of a rotating body provided above the rotation shaft of the first paddle, and a paddle unit frame which is an example of an upper member provided above the roller. The roller and the paddle unit frame are positioned within a rotation locus of the first paddle.