An image forming apparatus includes an apparatus main body, a post-processing device, a first magnetic body, and a second magnetic body. The apparatus main body includes an ejecting part configured to eject a sheet toward an ejecting space. The post-processing device is configured to be slidable between an attached position and a detached position. The post-processing device includes a post-processing part and a movable guide. The movable guide is movable between an ordinary position and an opening position. The first magnetic body magnetically attracts the second magnetic body so as to hold the movable guide at the opening position, in a state where the post-processing device is shifted to the detached position. The first magnetic body separates from the second magnetic body and releases magnetic attraction to the second magnetic body when the post-processing device slides from the detached position to the attached position.

A post-processing apparatus includes a blade, a transfer mechanism, a sheet folding roller pair, a motor, a drive control device, and a control device. The blade presses into the sheet to form a fold line in the sheet. The transfer mechanism moves the blade toward and away from the sheet. The sheet folding roller pair conveys the sheet with the fold line formed by the blade by pinching the sheet at a nip between the sheet folding roller pair. The motor rotatively drives the sheet folding roller pair. The drive control device controls drive of the motor. The control includes a control circuit. When, through the processor executing a control program, the control device controls the transfer mechanism to withdraw from the nip the blade having been pressed into the sheet and the nip by the transfer mechanism, the control device controls the drive control device to stop the motor.

An image forming system including an image forming apparatus configured to form an image on a sheet, a post-processing apparatus comprising a binding device configured to bind the sheet output from the image forming apparatus, and a control unit configured to control the binding device. The binding device is capable of executing binding processing via a staple forming process of forming a staple and moving the staple toward a striking-out position and a staple striking-out process of striking out the staple at the striking-out position. The control unit is configured to control the binding device to repeat multiple times the staple forming process without undergoing the staple striking-out process.

A postprocessing device includes a processing tray, a sheet processor, an air blower, an inlet roller pair, and a drive controller. The air blower forms an air layer between an upper face of a first recording sheet already placed on a loading surface of the processing tray, and a lower face of a second recording sheet to be newly placed on the processing tray, by sending air along a transport direction of the recording sheet, from an upstream side in the transport direction toward the loading surface. The drive controller performs an air sending operation, by causing the air blower to send air along the transport direction, before a second recording sheet contacts the upper face of the first recording sheet, and stop sending air before a trailing edge of the second recording sheet in the transport direction passes a nip region defined by the inlet roller pair.

A post processing apparatus includes a first sheet stacking portion, a stapling portion, a driving portion, and an airflow generating portion. The first sheet stacking portion stacks the sheets conveyed from an image forming apparatus that forms images on the sheets. The stapling portion is provided below a sheet conveying path leading to the first sheet stacking portion so as to be able to move along a width direction of the sheet orthogonal to a conveying direction of the sheet, and is configured to bundle sheets stacked on the first sheet stacking portion. The driving portion generates a driving force that moves the stapling portion according to the power supply. The airflow generating portion generates an airflow that flows into a movement space of the stapling portion via the driving portion.

A conveying device includes a conveying portion that conveys a sheet drawn out of a rolled sheet held by a holding portion; a winding portion that winds the sheet on a downstream side of the conveying portion; and a cutting portion that cuts the sheet between the conveying portion and the winding portion, wherein the conveying device includes a contact portion that contacts the sheet between the cutting portion and the winding portion, and the contact portion and the cutting portion are configured to be capable of integrally moving to a first position approaching the rolled sheet held by the holding portion and a second position away from the rolled sheet.

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).

A printer includes a paper discharge tray that is configured to accumulate paper discharged from a discharge portion; and a holding member that is provided at a position where the paper discharged from the discharge portion is stacked, the holding member configured to be integrated with the paper discharge tray or held to be extractable from the paper discharge tray. The holding member includes a pair of side edge guide portions that are configured to guide opposite side edges of the paper. The holding member is configured to be held to be movable to a position of the paper in a width direction where the paper is stored between the pair of side edge guide portions in response to a force acting when the discharged paper comes into contact with the pair of side edge guide portions.

A medium processing apparatus for processing a medium ejected from an image forming apparatus includes a conveyor, a slit, a medium processing device, a stopper, and detectors. The conveyor conveys the medium ejected from the image forming apparatus. The slit communicates with an opening of a housing into which a medium is manually inserted from outside and includes a placement face on which the inserted medium is placed. The placement face has a first side and a second side orthogonal to the first side. The first and second sides are not parallel to a direction in which a side face of the housing extends. The medium processing device processes the medium conveyed by the conveyor or the medium placed on the slit. The stopper regulates edges of the medium along the first and second sides of the placement face. The detectors are disposed on the stopper to detect the medium.

A printer includes a paper discharge tray that is configured to accumulate paper discharged from a discharge portion; and a holding member that is provided at a position where the paper discharged from the discharge portion is stacked, the holding member configured to be integrated with the paper discharge tray or held to be extractable from the paper discharge tray. The holding member includes a pair of side edge guide portions that are configured to guide opposite side edges of the paper. The holding member is configured to be held to be movable to a position of the paper in a width direction where the paper is stored between the pair of side edge guide portions in response to a force acting when the discharged paper comes into contact with the pair of side edge guide portions.