A sheet post-processing device of the present disclosure is provided with a punch hole forming device, a processing tray, an ejection tray, a conveyance roller pair, an ejection roller pair, and a stiffening member. In a case where a sheet through which punch holes have been formed is to be ejected on the ejection tray without being subjected to post-processing on the processing tray, in a state where the stiffening member is retracted in a direction away from the sheet, the conveyance roller pair conveys the sheet until at least a tip end thereof reaches on the ejection tray.

A sheet folding device includes: a sheet receiving unit with a pair of guide plates to restrict opposite sides of one or a plurality of stacked sheets and a striking portion to be struck by leading ends of the introduced sheets; a roller group to introduce the sheets into the sheet receiving unit, strike the introduced sheets on the striking portion to form a bent portion on the sheets, and nip and fold the formed bent portion and discharge the sheets from the sheet receiving unit; and a curve forming unit to form a curved portion on the sheets, at a position closer to the leading ends of the sheets than a position where the bent portion to be folded by the roller group is formed, the curved portion being curved in a width direction perpendicular to a direction of transfer of the sheets.

An image recording apparatus includes: a recording section which records an image on a sheet conveyed in a conveyance direction in a conveyance route; a first abutment member having a plurality of first abutment portions arranged apart from each other in a width direction orthogonal to the conveyance direction, and configured to abut against the sheet conveyed in the conveyance route; a first supporting member which supports the first abutment member; and a plurality of second abutment members which are supported by the first supporting member at both sides in the width direction, respectively, of the first abutment member, at a distance from the first abutment member, and each of which has a second abutment portion capable of contacting with the sheet conveyed in the conveyance route.

A recording-medium ejecting device includes a first rotating member that rotates and a second rotating member that faces the first rotating member and that is rotated by rotation of the first rotating member. At least one of the first rotating member or the second rotating member is provided with projections and recesses at both ends thereof. The projections and recesses are alternately arranged in a circumferential direction. The projections extend continuously from a rotating member body in an axial direction and have a diameter greater than that of the rotating member body. The recesses extend continuously from the rotating member body in the axial direction and have a diameter smaller than that of the rotating member body. The projections at one end of the rotating member body and the projections at the other end of the rotating member body are at the same positions in a circumferential direction.

The invention relates to a method for operating a system (2) comprising a corrugator (4) and a printing machine (6), wherein the corrugator (4) has a number of processing units (8) for processing one or more paper webs (18), wherein the printing machine (6) prints a paper web and outputs same as a printed paper web (18) to the corrugator (4), wherein the system (2) has a speed controller (34) which specifies a speed of a lead machine for a number of follower machines, such that they follow the lead machine, wherein the printing machine (6) is the lead machine, wherein at least one of the processing 10 units (8) of the corrugator (4) is a follower machine. The invention also relates to a corresponding system (2).

In a method and apparatus for storing media items at a storage zone, the apparatus has a storage zone for storing media items, a port region proximate to the storage zone for receiving at least one media item, and at least one media item deformer for deforming each media item that is transported along a transport pathway portion.

Provided is a medium conveying apparatus to enable suitable feeding of a plurality of types of media. A medium conveying apparatus includes a guide member including an opening or a notch and configured to form a conveyance surface of a medium, a feed roller located inside the opening or the notch and configured to feed the medium, a separation roller located to face the feed roller, and protruding parts located on left and right sides of the separation roller relative to a medium conveying direction. The guide member includes recessed parts positioned on left and right sides of the feed roller relative to the medium conveying direction. The protruding parts are located at positions facing the opening or the notch, or the recessed parts in such a way that the medium is conveyed between the protruding parts and the recessed parts. A tip of each of the protruding parts is positioned on the feed roller side of a nip part of the feed roller and the separation roller.

A sheet conveyance apparatus includes a conveyance rotating member pair to convey a sheet in a sheet conveyance direction, and a skew correction portion including a first abutment surface having a first root portion and a second abutment surface having a second root portion. A guide portion includes a guide surface disposed between the first abutment surface and the second abutment surface. The first root portion is positioned within a first recess portion disposed upstream of the first abutment surface such that a leading edge of the sheet enters the first recess portion upon abutting against both the first abutment surface and the second abutment surface, and the second root portion is positioned within a second recess portion such that the leading edge of the sheet enters the second recess portion upon abutting against both the first abutment surface and the second abutment surface.

A sheet conveyance apparatus includes a conveyance rotating member pair to convey a sheet in a sheet conveyance direction, and a skew correction portion including a first abutment surface having a first root portion and a second abutment surface having a second root portion. A guide portion includes a guide surface disposed between the first abutment surface and the second abutment surface. The first root portion is positioned within a first recess portion disposed upstream of the first abutment surface such that a leading edge of the sheet enters the first recess portion upon abutting against both the first abutment surface and the second abutment surface, and the second root portion is positioned within a second recess portion such that the leading edge of the sheet enters the second recess portion upon abutting against both the first abutment surface and the second abutment

A medium processing device includes a processing unit performing processing on a medium, a processing tray on which the medium is placed, a discharge roller pair configured to discharge the medium, a feeding unit configured to feed the medium to the processing tray and the discharge roller pair, and a curvature applying unit configured to apply curvature to the medium along a width direction intersecting a conveyance direction. The discharge roller pair includes a first roller and a second roller. The second roller is displaceable between a first state where the second roller can nip the medium with the first roller, and a second state where the second roller is more separated from the first roller. The curvature applying unit is in a curvature applying state when the second roller is in the second state, and in a retracted state when the second roller is in the first state.