Abstract: A sheet alignment device, that is included in a sheet finishing apparatus integrally mounted with an image forming apparatus to an image forming system or connected to the image forming apparatus, includes an accommodating unit configured to temporarily accommodate a paper sheet and a paper sheet stack including the paper sheet therein, and a sheet alignment unit configured to align the sheet stack including the paper sheet in a direction perpendicular to a sheet travel direction. The sheet alignment unit has a first alignment member configured to move between a sheet receiving position and a sheet alignment position along the direction perpendicular to the sheet travel direction so as to push the sheet stack and a second alignment member configured to move to a fixed position and remain stationary thereat so as to stop the sheet stack pushed by the first alignment member.

Abstract: A sheet processing apparatus includes a first processing unit, a second processing unit, a roller, a guide member, and a conveying unit. The first processing unit applies first processing to a recording medium. The second processing unit applies second processing to the recording medium. The roller has a conveying path to convey the recording medium from the first processing unit to the second processing unit along the outer circumference. The guide member guides the recording medium to the conveying path to lead the recording medium to the second processing unit. The conveying unit applies a conveying force to a stack of recording media at an upstream of the guide member in a recording-medium conveying direction.

Abstract: A sheet post-processing apparatus, e.g., that is included in an image forming system, includes: a sheet stacking unit configured to stack a plurality of sheets of one or more printable media; a sheet alignment unit configured to align the plurality of sheets stacked in the sheet stacking unit; a pressing mechanism configured to press and hold the plurality of sheets stacked in the sheet stacking unit; and a stapling unit configured to staple the plurality of sheets aligned by the sheet alignment unit, the stapling unit being displaceable to a given position that avoids interference with the pressing mechanism while the sheet alignment unit performs a sheet alignment with respect to the plurality of sheets in the sheet stacking unit.

Abstract: A sheet processing apparatus may include a conveyance path and a tray. The conveyance path may convey sheets. The tray may receive the sheets conveyed from the conveyance path. The tray may include a stapler and a folding member. The stapler may staple the sheets. The folding member may fold the stapled sheets and may be provided upstream from the stapler relative to a sheet conveyance direction.

Abstract: A perforating apparatus comprising a structure in which replacement can be easily conducted corresponding to the perforation conditions such as the punch holes and number of holes, and in which condition settings and position determination can be automatically recognized during replacement; the perforating apparatus comprises: an orientation correction device that corrects skewing and aligns the front edge by striking the front edge of the paper, a perforation device comprising a punch to conduct perforation processing on the paper; and a lateral registration adjustment device that can adjust, in a direction at a right angle to the direction of movement of the aforementioned paper, the position of the perforation device punch in relation to the paper with orientation corrected using an orientation constraint device prior to perforating by the perforation device, the perforating apparatus comprising a structure in which said perforation device can be inserted into and detached from a non-moving support unit co

Abstract: A sheet conveying device includes a first conveying path configured to pass a sheet of a recording medium (e.g., paper) therethrough to a sheet processing device, a second conveying path branched from the first conveying path and configured to temporarily store the paper sheet conveyed therein, a sheet conveying mechanism configured to selectably convey the paper sheet in one of forward and backward directions to the sheet processing device, a guide member mounted at a branch point of the first and second conveying paths and configured to guide the paper sheet when the paper sheet is conveyed in the backward direction by the sheet conveying mechanism to the second conveying path, and a control unit configured to control the sheet conveying mechanism to change a distance between the branch point and the sheet conveying mechanism according to a length of the paper sheet in a forward sheet conveying direction.