Abstract: A sheet processing apparatus includes a conveying portion, a conveying path, a discharge port, a stacking portion, a manual setting portion, a binding device which binds a sheet bundle formed by the stacking portion and a sheet bundle set at the manual setting portion by a staple, a first regulating portion which regulates a position of the sheet bundle at a rear side of the apparatus in a width direction, and a second regulating portion which regulates a position of the sheet bundle in the conveying direction. The binding device is formed to be movable back and forth to a front side and the rear side of the apparatus. When a staple is replenished to the binding device, the binding device is positioned at the third position so that a cartridge of the staple is loaded into the binding device from the front side of the apparatus.

Abstract: A folding apparatus includes: a folding unit configured to fold a recording medium at an intermediate portion in a transport direction of the recording medium; an upstream roller pair disposed on an upstream side in the transport direction of the recording medium with respect to the folding unit, and configured to transport the folded recording medium toward the folding unit with a fold as a leading end; and a downstream roller pair disposed on a downstream side in the transport direction of the recording medium with respect to the folding unit, and configured to sandwich and transport the recording medium sandwiched between the upstream roller pair, the downstream roller pair being configured to apply a transport force to a portion of the recording medium that is connected to a portion of the recording medium that is sandwiched between the upstream roller pair.

Abstract: A post-processing unit includes a stapler, a driving section, and a controller. The stapler is moved in a Y direction and executes a stapling process on a paper sheet. The driving section moves the stapler in the Y direction. The controller controls an operation of the stapler and an operation of the driving section. The controller executes first control to supply a set current or a set voltage to the driving section, second control to supply, to the driving section, the same supply current as the set current or the same supply voltage as the set voltage, and third control to stop the supply of the supply current or the supply voltage. When the stapler executes the stapling process a plurality of times, the controller repeatedly executes the second control and the third control and causes the stapler to execute the stapling process during the execution of the second control.

Abstract: A printing system includes a discharging unit, a mounting unit, a post-process unit, a relay unit, and a control unit. The discharging unit discharges sheets. The mounting unit is provided to an apparatus body, and sheets are mounted on the mounting unit. The post-process unit performs a post-process on sheets. The relay unit is provided to the apparatus body, is configured to transport sheets to the post-process unit, and includes a lower path member. The lower path member is configured to be switched between a first state in which the lower path member serves as part of a relay path from the discharging unit to the post-process unit and a second state in which the lower path member opens the relay path. The control unit, when the lower path member is in the second state, makes sheets be discharged from the discharging unit to the mounting unit.

Abstract: A printing system includes a printing apparatus that prints an image on a sheet, a sheet processer that executes sheet processing, and a sheet detection sensor that detects a sheet on which the sheet processing is performed not in association with the printing of an image, where the printing of an image is restricted in response to detection of a sheet by the sheet detection sensor.

Abstract: A post-processing apparatus includes a post-processing device, an ejection device, and an ejection tray. The post-processing device executes post-processing on a medium on which an image is formed by an image forming apparatus. The ejection device ejects the medium on which the post-processing is executed by the post-processing device. The ejection tray holds the medium ejected by the ejection device. The ejection tray includes a main tray having an upper face inclined downward in an ejection direction, and a movable tray being rotatably supported by the main tray between a stacking position at which the medium ejected by the ejection device remains stacked on the upper face of the main tray and an ejection position at which the medium ejected by the ejection device slides along the upper face of the main tray.

Abstract: An image forming apparatus includes a first conveyance unit including an image forming unit to convey a sheet on which an image is formed, and a second conveyance unit including a cover movable between a close position and an open position, the second conveyance unit being movable between a first position where the sheet can be conveyed to the sheet conveyance path and a second position separated from the first position. The first conveyance unit includes a retaining portion to retain the cover at a predetermined position, wherein the cover does not interfere with the retaining portion when the second conveyance unit is positioned at the first position, and the cover is in contact with the retaining portion and retained at the open position in a condition where the second conveyance unit is positioned at the second position and the cover is moved from the close position to the open position.

Abstract: A post-processing apparatus includes a first discharge section configured to discharge a medium having thereon information recorded by a recording section, a processing tray configured to be loaded with the medium discharged by the first discharge section, an edge alignment section disposed on the processing tray, a transport section making contact with an upper surface of the medium mounted on the processing tray and configured to transport the medium to the edge alignment section, a position change section configured to change a relative position of the transport section with respect to the processing tray, and a controller configured to change pressure of when the transport section presses the medium by controlling the position change section, and a post-processing section configured to perform post-processing on the medium on the processing tray, wherein the controller changes the pressure based on processing information regarding processing to be performed on the medium.

Abstract: A sheet discharge device includes: at least one processor; a conveyance unit configured to convey a sheet along a conveyance path; a discharge unit to which the sheet is discharged; a storage unit that is provided in a middle of the conveyance path and temporarily stores the sheet; an alignment unit provided in the discharge unit and configured to align the sheet in a width direction intersecting a convey direction of the sheet, in which the processor is configured to change a method of aligning the sheets by the alignment unit between a case where storage control for storing the sheets in the storage unit is performed and a case where the storage control is not performed.

Abstract: The present invention is to provide a sheet binding apparatus capable of performing stable pressure-bonding binding processing. A sheet binding apparatus includes a moving means configured to move at least one of the first binding portion and the second binding portion to bring the first binding portion and the second binding portion into pressure contact with each other, and a plurality of peeling members configured to apply peeling force in a direction opposite to a pressure-bonding direction to peel off a bound portion of the sheets stuck to the surface when the first binding portion and the second binding portion are separated by the moving means after pressure-bonding binding processing is performed. Here, the peeling force is applied by the plurality of peeling members at different timings.

Abstract: A discharging device includes an aligning unit for aligning stacked sheets as a sheet bundle, a discharging unit for discharging the sheet bundle, a discharged tray on which the sheet discharged by the discharging unit is stacked, and a support unit. The support unit supports the sheet bundle from below by extending in a sheet discharging direction of the sheet bundle while the sheet bundle is discharged to the discharged tray and to be accommodated in a direction opposite to the sheet discharging direction at timing when the discharging unit finishes discharging the sheet bundle.

Abstract: A binding device includes: an upper teeth portion having at least one teeth row that forms unevenness in a recording material bundle; a lower teeth portion having at least one teeth row that forms unevenness in the recording material bundle and being paired with the upper teeth portion; and at least one holding portion that holds the recording material bundle at a position different from a position where the upper teeth portion and the lower teeth portion have a binding function, when binding processing is performed by the upper teeth portion and the lower teeth portion.

Abstract: A printing system includes a book body printing section including a book body printing machine and outputting book bodies sequentially, and a cover printing section including a cover printing machine and outputting covers sequentially. The book body printing machine and the cover printing machine respectively receive printing order data indicating a printing order with regard to a plurality of jobs from a print control apparatus, and perform printing in the printing order indicated by the printing order data. The print control apparatus generates the printing order data, so that an inserting order in unit of job to a bookbinding machine of the book bodies output from the book body printing section coincides with an inserting order in unit of job to the bookbinding machine of the covers output from the cover printing section.

Abstract: A sheet feeder includes an ejection tray, an ejector, an aligner, a pressing member, a friction member, and a switching device. The ejection tray stacks sheets. The ejector ejects a sheet to the ejection tray. The aligner is disposed downstream of the ejector in a direction of ejection of the sheet. The aligner is rotatable in a normal direction and a reverse direction. The pressing member applies pressure between the sheet and the aligner to enable the aligner to convey the sheet by rotation in the normal direction and the reverse direction. The friction member contacts the sheet ejected on the ejection tray to prevent conveyance of the sheet. The switching device switches contact and separation of the friction member with respect to the sheet.

Abstract: A sheet binding processing apparatus includes a conveying portion, a conveying path for sheets, a stacking portion on which sheets from the conveying path are stacked, a first regulating portion for regulating a sheet bundle on the stacking portion in a crossing direction, a second regulating portion for regulating a sheet bundle in the conveying direction, a manual setting portion for setting sheets from an outside of the apparatus, and a binding device which binds a sheet bundle by a staple and moves in the crossing direction. An angular posture of the binding device located at a third position is different from an angular posture located at a first position. An angular posture of the binding device located at the third position is different from an angular posture located at a second position. The second position is located at a second side of the first position.

Abstract: A post-processing apparatus includes a loading portion, a first binder, a first mover, a second binder, a second mover, and circuitry. A plurality of sheets are placed as a sheet bundle on the loading portion. The circuitry executes a control mode in which, before the sheet bundle as a target to be bound by one binder of the first binder and the second binder is placed on the loading portion and after the one binder starts moving from a corresponding reference position of a first reference position and a second reference position, the circuitry causes the other binder of the first binder and the second binder to perform binding instead of the one binder. The circuitry executes the control mode, without returning the one binder to the corresponding reference position, in a state in which the one binder and the other binder do not contact each other.

Abstract: An image forming apparatus includes a control portion, a switching processing portion, a determination processing portion, and a release processing portion. The control portion includes a detection portion that detects abnormality regarding an image forming portion, and controls the image forming portion. When the abnormality detected by the detection portion is a first abnormality, the switching processing portion switches an operation mode of the image forming apparatus from a normal mode to a stop mode in which the control portion is stopped. When a specific operation is performed in a case where the operation mode is the stop mode, the determination processing portion determines whether or not a second abnormality is continued, based on a record result of detection of the abnormality. When it is determined that the second abnormality is continued, the release processing portion releases regulation on a removal of a developer storing portion.

Abstract: According to embodiments, a sheet post-processing apparatus includes a processing tray, a vertical alignment section, a horizontal alignment section and a controller. The controller is configured to control the horizontal alignment section to shift the sheet to a first alignment position a predetermined distance from the center of the processing tray in the sheet width direction, control the horizontal alignment section to align the sheet in the sheet width direction at the first alignment position, and control the vertical alignment section to align the sheet in the conveying direction at the first alignment position, control the horizontal alignment section to realign the sheet at the first alignment position.

Abstract: A paper sheet S is intermittently transported by a transport mechanism 6 and each processing unit 7, 8 operates while the transport mechanism pauses the transport operation. An information acquisition unit 9 obtains paper information from the paper sheet. A control unit 10 stores the paper information of the paper sheet to be processed for each processing unit, updates the data of the memory in a manner such that the paper information of the paper sheet associated with the previous processing unit is associated with the next processing unit every time the transport mechanism transports, and configures the settings of each processing unit for the next processing operation based on the paper information every time the processing operation of the processing unit is completed.

Abstract: A staple unit is secured to a second movable body that is provided on a first movable body so as to be swayed. The first movable body is moved linearly in a width direction of a bundle of sheets. The second movable body includes a first engagement member and a second engagement member, and the movement of the first engagement member and the second engagement member in accordance with the linear movement of the first movable body is guided by a parallel groove, a first sway groove, and a second sway groove of a posture control unit. The first engagement member is in constant contact with the first sway groove while the first engagement member moves in the first sway groove, and the second engagement member is in constant contact with the second sway groove while the second engagement member moves in the second sway groove.

Abstract: Post-processing apparatus for performing given process subsequently to image forming process by image forming apparatus is disclosed. Post-processing apparatus includes: first ejector which ejects sheet; first tray which temporarily holds sheet; second tray situated downstream of first tray in ejection direction of sheet; a tray driver which moves second tray downwardly from first height position; blower which forms airstream between second tray and lower surface of sheet; and controller which controls blower and tray driver. Controller includes: blower controller which causes blower to blow air over time period in synchronization with first time period from start to end of sheet ejection by first ejector; and tray controller which causes tray driver to move second tray downwardly from first height position after first time period.

Abstract: A medium ejection apparatus includes a placement mount on which media are placed, a restriction part that moves between a restriction position at which the restriction part restricts media ejected toward the placement mount and a retracted position retracted from the restriction position, and a processor that controls the restriction part by adjusting a restriction frequency on the basis of at least either an amount of movement of the restriction part from the retracted position to the restriction position or ejection intervals at which the media are ejected toward the placement mount, the restriction frequency being a frequency with which the restriction part performs a restriction operation for the media.

Abstract: A sheet discharge apparatus includes a first tray for stacking sheets, and a sheet bundle forming unit that forms a sheet bundle on the first tray. The sheet bundle forming unit forms a first sheet bundle on the first tray, and forms a second sheet bundle on the first sheet bundle to be offset from the first sheet bundle. When forming each of the first sheet bundle and the second sheet bundle on the first tray, the sheet bundle forming unit divides sheets constituting each of the sheet bundles into a plurality of sets and discharges the sheets in a plurality of times for each sheet bundle. A number of sheets included in a first sheet set of the first sheet bundle is set smaller than a number of sheets included in a first sheet set of the second sheet bundle.

Abstract: A post-processing apparatus according to an embodiment includes a processing tray, a post-processing section, a sensor, and a control section. A sheet supplied from an image forming apparatus is led into the processing tray through a lead-in path. The post-processing section applies post-processing to the sheet sent from the processing tray. The sensor detects an object passing a detection space in the lead-in path. The control section controls operation of the post-processing section based on a time in which the sensor detects the object.

Abstract: A recording apparatus includes an apparatus body including a recording section configured to record onto a medium and a discharge section configured to discharge the medium recorded by the recording section, and a post-processing unit attached to the apparatus body, the post-processing unit being configured to receive the medium discharged from the discharge section and perform post-processing. The post-processing unit is configured to be moved between a receiving position at which the medium discharged from the discharge section is to be received and a discharge position to which the post-processing unit is moved from the receiving position and at which the medium discharged from the discharge section is discharged to the outside of the post-processing unit without being received into the post-processing unit.

Abstract: A processing device includes a medium supporting portion having a support surface for supporting at least a front end portion of a transported medium, an aligning portion for aligning the medium supported by the medium supporting portion, a stacking portion provided below the medium supporting portion in a vertical direction, having a stacking surface on which the medium dropped from the medium supporting portion is stacked, and configured to move up and down, and a pressing portion having a pressing surface facing the support surface, the pressing surface being configured to move between a first position and a second position closer to the support surface than the first position, in which the pressing portion is disposed at the first position when the medium is transported to the medium supporting portion, and is disposed at the second position after the aligning portion aligns the medium on the medium supporting portion.

Abstract: A sheet post-processing apparatus includes an output tray on which a sheet ejected from a sheet outlet is stacked; a wall disposed downstream from the output tray in a sheet ejection direction; and an alignment member configured to contact and move the sheet on the output tray, to bring a rear end of the sheet in the sheet ejection direction into contact with the wall for alignment. The alignment member is selectively set at three positions of: an alignment position protruding beyond the wall toward the output tray to contact the sheet on the output tray; a withdrawn position inward of the wall; and a home position between the alignment position and the withdrawn position.

Abstract: A sheet processing apparatus includes a conveying portion for conveying sheets, a conveying path for sheets, a stack portion for stacking sheets, a first binding portion having a first binding member and moving in a crossing direction crossing to the conveying direction, a first regulating portion which regulates a position of a sheet bundle stacked on the stack portion, a second regulating portion which regulates a position of a sheet bundle stacked on the stack portion, a third regulating portion which regulates a position of a sheet bundle, and a second binding portion which has a second binding member and binds a corner portion of a sheet bundle without a staple. The first binding portion binds a corner portion of a sheet bundle by a staple. The second binding member is located at a downstream of the first binding member in the conveying direction.

Abstract: A sheet processing apparatus includes a first sheet conveyance path, a second sheet conveyance path that branches from the first sheet conveyance path at a branch portion on the first sheet conveyance path and merges with the first sheet conveyance path at a merging portion, and a control unit. The control unit controls a guide unit so as to guide a first sheet conveyed first in the sheet bundle to be processed by a sheet processing unit to the second sheet conveyance path, and guide a second sheet following the first sheet to the first sheet conveyance path to merge the first and second sheets in an overlapping manner at the merging portion, and guide at least one of sheets following the second sheet among a plurality of sheets constituting the sheet bundle to the second sheet conveyance path.

Abstract: A medium stacking device includes an intermediate stacker that receives a medium treated by a treatment portion, and a first alignment member as an example of a contact portion, that is configured to move between a first position for performing an alignment operation on the medium on the intermediate stacker, and a second position that is separated further from the leading edge of the medium than is the first position. Furthermore, the medium stacking device is provided with a stacking portion that stacks the medium discharged from the intermediate stacker. The medium discharged from the intermediate stacker is stacked on the stacking portion after a leading edge contacts the first alignment member positioned at the second position.

Abstract: A binding device includes a stacking device configured to receive sheets, a sheet alignment member configured to align the sheets on the stacking device, a binder configured to bind the sheets on the stacking device, a binder moving device configured to move the binder, and a retreat device configured to retreat the sheet alignment member from a range of movement of the binder. The retreat device retreats the sheet alignment member in response to a pressing force acting on the sheet alignment member in a direction of movement of the binder.

Abstract: A sheet post-processing device includes: an alignment member which aligns a sheet bundle on a stacking tray; and a stapler which performs binding processing on a rear end of the sheet bundle. The stapler includes: a first stapler which moves along the rear end of a first sheet bundle and performs the binding processing on a plurality of positions at the rear end of the first sheet bundle; and a second stapler which performs, at one part of an end portion of the rear end on one side, binding processing different from the first stapler. The alignment member includes: a first alignment member and a second alignment member which align the sheet bundle in a first stacking position; and a third alignment member which is fixed to a position corresponding to the second stapler and which aligns the sheet bundle in a second stacking position with the first alignment member.

Abstract: A sheet binding processing apparatus includes a binding device which performs a binding process on a sheet bundle stacked on a stacking unit and a sheet bundle set at a manual setting portion, the stacking unit stacking introduced sheets, a sheet bundle being set to the manual setting portion from an outside; a moving portion which moves the binding device to a first binding position for performing the binding process on a sheet bundle stacked on the stacking unit and a second binding position for performing the binding process on a sheet bundle set at the manual setting portion; and a controller which causes the binding device, in a case that the binding process is not performed on a sheet bundle stacked on the stacking unit, to wait due to the moving portion at a position different from the first binding position.

Abstract: According to embodiments, a sheet post-processing apparatus includes a processing tray, a vertical alignment section, a horizontal alignment section and a controller. The controller is configured to control the horizontal alignment section to shift the sheet to a first alignment position a predetermined distance from the center of the processing tray in the sheet width direction, control the horizontal alignment section to align the sheet in the sheet width direction at the first alignment position, and control the vertical alignment section to align the sheet in the conveying direction at the first alignment position, control the horizontal alignment section to realign the sheet at the first alignment position.

Abstract: An image processing apparatus includes first and second sheet storage units and a post-processing unit to perform specific post-processing on a printed sheet. A print command is received in which a sheet in the first sheet storage unit is specified as a sheet to be used in printing a first copy and a sheet in the second sheet storage unit is specified as a sheet to he used in printing a second copy. In a case where the specific post-processing is unable to he performed on the sheet to be used in printing the first copy, a printed sheet is output without causing the post-processing unit to perform the specific post-processing on the sheets for the first and second copies, even if the print command commands that the specific post-processing be performed in printing the first copy and the second copy.

Abstract: A sheet discharging apparatus includes a discharging portion, a first supporting portion configured to support the sheet in a state where at least a part of the sheet is exposed to an outside, a second supporting portion configured to support the sheet discharged by the discharging portion, and a control portion configured to execute a first mode and a second mode, the first mode being a mode where the first supporting portion is selected as a destination of the discharged sheet and where the first supporting portion supports the sheet, the second mode being a mode where the second supporting portion is selected as the destination of the discharged sheet and where the second supporting portion supports the sheet by discharging the sheet supported on the first supporting portion to the second supporting portion in a state where the sheet is not supported on the first supporting portion.

Abstract: An image reading apparatus capable of determining whether or not to perform an inclination correction for an original to be read is provided. The image reading apparatus comprises a pair of guide plates to sandwich an end of the original in a width direction, an original guide width detection sensor for measuring a width between the guide plates with the original sandwiched, various rollers for conveying the original, and a surface reading unit for reading an image of the original. The image reading apparatus further comprises an image processing part which detects the width of the original being conveyed as an original width to detect an amount of inclination of the original being conveyed. Further, the image processing part corrects the image of the original read in accordance with the amount of inclination detected. The image reading apparatus compares the guide width with the original width and controls whether or not to perform the inclination correction in accordance with a result of the comparison.

Abstract: A multifunction rotary tool for milling and roughening backs of blocks of pages to be bound by a bookbinding machine comprises a cylindrical base defining a rotation axis, a first annular member adapted to be secured to the cylindrical base and having an outer edge, a crown of milling blades formed in the first annular member proximate to its outer edge and defining a cutting plane perpendicular to the rotation axis, and a plurality of roughening inserts securable to the cylindrical base along a circular area radially offset from the crown of milling blades. Each insert comprises a cylindrical body with a hook-shaped end portion defined by an upper edge with a sharp tip designed to penetrate the block back in a perpendicular cut. The end portion comprises a recessed surface adapted to tear and push downwards the cut material without removing it.

Abstract: Disclosed is a post-processing apparatus couplable to an image forming apparatus. The post-processing apparatus comprises: a paper discharging roller to convey, from a conveying path, a first paper discharged from the image forming apparatus, to a standby path connected to the conveying path, and convey the first paper from the standby path and a second paper discharged from the image forming apparatus from the conveying path, to an intermediate loading part, in a state in which a leading end of the first paper toward the intermediate loading part protrudes more than a leading end of the second paper toward the intermediate loading part to process the first paper and the second paper.

Abstract: A binding apparatus includes: a set of binding parts configured to press and bind a bundle of recording materials from one side and a remaining side in a thickness direction; a first support part configured to support the bundle of recording materials from the one side by performing rotation toward the bundle of recording materials around a predetermined fulcrum; and a second support part configured to support the bundle of recording materials from the remaining side so as to face the first support part when binding is performed by the set of binding parts.

Abstract: A binding apparatus includes: a first pressing part that presses a recording material bundle; and a second pressing part that is pushed out toward the first pressing part and presses the recording material bundle. When a recording material or the recording material bundle enters a pressing area where the first pressing part and the second pressing part face each other, at least one of the first pressing part and the second pressing part retreats more downstream than the pressing area in a direction where the recording material or the recording material bundle enters the pressing area.

Abstract: A sheet processing apparatus includes a conveying portion; a conveying path for sheets conveyed by the conveying portion; a stack portion where sheets discharged from the conveying path are stacked; a first binding portion moving in a crossing direction crossing the conveying direction; a first regulating portion regulating a position of a sheet bundle stacked on the stack portion; a first guide member guiding the first regulating portion; a second regulating portion regulating a position of a sheet bundle on the stack portion in the crossing direction; a second guide member guiding the second regulating portion; a third regulating portion regulating a position of a sheet bundle on the stack portion in the conveying direction; and a second binding portion binding a corner portion of a sheet bundle without a staple. The first binding portion binds a corner portion of a sheet bundle by a staple.

Abstract: Provided is a binding apparatus enabling easy removal of a sheet bundle, which has been subjected to binding, from clamping teeth. The binding apparatus includes: a sheet placement portion on which sheets are placed; an alignment unit configured to align the sheets placed on the sheet placement portion; a binding member configured to bind the sheets placed on the sheet placement portion by deforming the sheets without using a staple; and a separating member configured to apply a rotational force to the sheets which are bound by the binding member to separate the sheets and the binding member from each other, the alignment unit and the separating member being constructed by different members.

Abstract: A sheet processing apparatus includes a carry-in path for guiding a sheet from a carry-in entrance, a shift roller provided in the carry-in path to relay and transport the sheet, a first transport path positioned on the downstream side of the relay roller to transport the sheet from the carry-in path to a first collection tray, and a second transport path branched off from the carry-in path to transport the transported sheet to a second collection tray. The relay roller shifts the sheet in the direction crossing the transport direction, while the shift by the relay roller is performed after the sheet front end enters the first transport path or second transport path. Thus, it is possible to provide a relatively compact sheet processing apparatus capable of shifting in sorting and shifting sheets, without increasing the carry-in path.

Abstract: A binding apparatus includes: a first pressing part that presses a recording material bundle to bind the recording material bundle; a second pressing part that faces the first pressing part; and a pushout part that is formed as a member different from the second pressing part for pushing out the second pressing part toward the first pressing part. The second pressing part is supported to be movable with respect to the pushout part and, when pushed out by the pushout part, presses the recording material bundle.

Abstract: The present invention is to provide a sheet discharge device capable of preventing the lowermost sheet on a tray from being displaced. A present sheet post-processing device includes a first tray for stacking a sheet, a processing tray that temporarily stacks conveyed sheets until a number of the sheets reaches a predetermined number, and a discharge mechanism that discharges the sheets stacked on the processing tray onto the first tray. A sheet bundle forming unit divides, when forming a first sheet bundle on the first tray, sheets constituting the first sheet bundle into a plurality of sets and discharges the sheets a plurality of times for each set. At this time, a number of sheets included in a sheet set to be discharged at the first time is smaller than a maximum number of sheets included in sheet sets to be discharged at the second and subsequent times.

Abstract: An image forming apparatus includes an optional device, a casing, an image forming section and a sheet conveyor device. The optional device performs optional processing. The image forming section is located inside of the casing and forms an image on a sheet. The sheet conveyor device conveys, to the optional device, the sheet with an image formed thereon by the image forming section. The optional device and the casing are fixed to each other. The sheet conveyor device is fixed to the optional device and the casing.

Abstract: A binding unit includes a first pressing part that presses a recording material bundle to bind the recording material bundle, a second pressing part that faces the first pressing part, and a pushout part that pushes out the second pressing part toward the first pressing part by acting on the second pressing part using an upper shaft lever and by varying a distance from a start portion serving as a start point of pushout movement to the upper shaft lever. The start portion is formed integrally with a member at which the first pressing part is formed.

Abstract: A sheet processing apparatus includes a conveying portion, a stack portion on which sheets are stacked, a first binding portion moving in a crossing direction crossing a conveying direction, a first regulating portion regulating a position of a sheet bundle stacked on the stack portion in the crossing direction, a first rack moving in the crossing direction with the first regulating portion, a first pinion forming a rack-pinion mechanism with the first rack, a second regulating portion regulating a position of a sheet bundle stacked on the stack portion in the crossing direction, a second rack moving in the crossing direction with the second regulating portion, a second pinion forming another rack-pinion mechanism with the second rack, a third regulating portion regulating a position of a sheet bundle stacked on the stack portion, and a second binding portion which binds a corner portion of a sheet bundle without a staple.

Abstract: An image reading apparatus includes a housing, a transport unit, a first reader, a controller, and a positioning mechanism. The controller controls the transport unit to transport a second medium different in thickness from a first medium in a first transport direction and then in a second transport direction opposite to the first transport direction. The positioning mechanism moves the first reader from a first position to a second position by using a drive force by which the transport unit transports the second medium in the first transport direction. The positioning mechanism maintains the first reader at the second position while the second medium transported by the transport unit in the second transport direction is passing the first reader, and moves the first reader from the second position to the first position after the first reader reads the image on the first side of the second medium.