When performing an alignment process on a sheet loaded on the processing tray in a state where a front end of the sheet is protruded from a discharge outlet above a discharge tray, the control unit performs a front end alignment process in which a pair of discharge tray cursors sandwich the front end of the sheet protruded above the discharge tray in the width direction, and a rear end alignment process in which the pair of processing tray cursors sandwich a rear end of the sheet on the processing tray in the width direction.

A sheet post-processing device includes a conveying member, a processing tray, a processing section, a reference plate, an alignment member, a holder drive unit, and a control unit. The alignment member includes a paddle holder supported in a swingable manner along a carry-in direction, and an alignment paddle supported in a rotatable manner at a swinging end of the paddle holder. The holder drive unit moves the alignment paddle in a reciprocating manner, between a reference position to retreat the paddle part above a top sheet placed on the processing tray and an acting position to allow the paddle part to contact with a top surface of the sheet. When the number of the sheets carried in onto the processing tray is increasing, the control unit continuously moves the acting position of the alignment paddle in a direction separating from the processing tray.

A first notch portion to which a first limiting member is movable and a second notch portion to which a second limiting member is movable are formed in a stacking surface of a stacking unit, and the first and second notch portions are arranged such that a minimum distance between the first notch portion and a center of the stacking unit in the widthwise direction is smaller than a minimum distance between the second notch portion and the center of the stacking unit in the widthwise direction.

A sheet processing apparatus includes a conveying portion conveying sheets; a stack portion staking the sheets; a first regulating portion regulating a position of a sheet bundle on the stack portion in a crossing direction; a second regulating portion regulating a position of a sheet bundle in the conveying direction; a first binding device moving in the crossing direction so that the first binding device moves between first and second sides of the sheet processing apparatus and to bind an upstream end portion of a sheet bundle by a staple at a plurality of positions in the crossing direction; a second binding device binding an upstream end portion of a sheet bundle, where the second regulating portion has contacted without a staple; and a controller causing, in a case that the first binding device binds a sheet bundle, the second binding device to be positioned outside the sheet bundle.

A sheet processing apparatus includes a tray, a stapler, a first discharge section, and a controller. A sheet on which an image is formed is stacked on the tray. The stapler is arranged at an upstream side in a first direction which is a sheet discharge direction with respect to the tray, and executes a binding processing on the sheet. The first discharge section moves from a reference position at the upstream side of the tray to the first direction while supporting the sheet, and executes a discharge processing of the sheet. The controller enables the first discharge section to move from the reference position to a downstream side in the first direction and stop at a processing position and drives the stapler to execute the binding processing on the sheet supported by the first discharge section.

A media processing device includes: a transport assembly to guide a media unit from a source past a processing head in an outbound direction, and past the processing head in a return direction toward an output; and a redirector to receive the media unit in the outbound direction, flip the media unit, and expel the media unit in the return direction. The redirector includes: a motor having an output shaft; a carriage rotatably supported by a housing; a roller supported by the carriage for engaging with the media unit; and a selector connected between the output shaft and the roller. The selector, for a first output shaft drive direction, rotates relative to the carriage and drives the roller for receiving or expelling the media unit, and for a second output shaft drive direction, engages the carriage and rotates the carriage relative to the housing for flipping the media unit.

A sheet processing system according to an embodiment includes a tray that supports a sheet on opposite sides of the sheet orthogonal to a conveyance direction of the sheet. The tray includes a first adjustable support and second adjustable support positioned opposite the first adjustable support in the direction orthogonal to the conveyance direction of the sheet. A skew sensor detects a skew angle of the sheet conveyed to the tray. A corner sensor detects positions of each corner on a front end in the downstream direction of the sheet conveyed to the tray. A controller controls movement of the first and second adjustable supports based on the detected skew angle and the detected positions of each corner on the front end of the sheet conveyed to the tray so that the sheet is conveyed to the tray without jamming.

A system includes a carrier frame having a void, a rigid substrate of size of the void, the rigid substrate is connected to the void of the carrier frame, and a tape connected to edges of the rigid substrate and the carrier frame along the edges of the rigid substrate. The system is for printing with a standard printer to provide a full bleed print on the rigid substrate.

A sheet feeding device, which is included in an image forming apparatus, includes a sheet container to accommodate a recording medium, a sheet feeding body to press a surface of the recording medium in the sheet container and feed the recording medium in a sheet conveying direction, a pair of sheet position regulators to regulate a position of the recording medium in a sheet width direction perpendicular to the sheet conveying direction, and a load applier to contact the surface of the recording medium and apply a load to the recording medium at the surface. The recording medium is brought to move toward one of the pair of sheet position regulators while the recording medium is being fed. A lower face position in a standby state of the sheet feeding body is lower than a lower face position in a standby state of the load applier.

A document feeder, which may be incorporated in an image forming apparatus, includes a sheet conveying guide, at least one recess, a frame, and at least one protrusion. The sheet conveying guide is disposed facing an exposure glass on an apparatus body and guides an original document passing over the exposure glass when the document feeder is closed to the apparatus body. The recess is disposed on the apparatus body at both ends of the exposure glass in a lateral direction orthogonal to a document conveying direction. The frame is openably closable about one end side of the apparatus body in the lateral direction and vertically movably holds the sheet conveying guide. The protrusion is disposed on the frame facing the recess. The sheet conveying guide and the frame are secured to each other while the recess and the protrusion are engaged with each other in the closed state.