Abstract: A printed material holding device includes a printed material tray for receiving printed media, an adjustable mechanism and a transmission mechanism. The adjustable mechanism includes a driving device, a first gear assembly, a second gear assembly, a rotatable member, and a moving member engaged with the rotatable member. The moving member includes a roller engaged with the second gear assembly. The transmission mechanism includes a mounting plate and a stopper piece disposed on an edge of the mounting box. The first gear assembly meshes with the driving device and is engaged with the rotatable member, and the second gear assembly is engaged with the first gear assembly and secured to the moving member.

Abstract: A sheet processing apparatus includes a support unit on which sheets are stacked together as a sheet stack, first and second binding units that respectively perform first and second binding processes to bind the sheet stack as first and second sheet stacks, a transporting unit that transports the first and second sheet stacks toward first and second paths, respectively, which are in opposite directions, a reversing-and-transporting unit disposed at the second path to transport the second sheet stack such that upper and lower sides thereof are reversed, a first transported-sheet-stack support unit that is disposed at the first path and on which the first sheet stack transported by the transporting unit is placed, and a second transported-sheet-stack support unit that is disposed at the second path and on which the second sheet stack reversed and transported by the reversing-and-transporting unit is placed.

Abstract: A sheet processing apparatus nicely performs an aligning operation for a sheet conveyed onto a process tray with a simple configuration. A switching member performs an operation of switching an aligning member from a non-contact state to a contact state before the sheet reaches a contact position on the tray or performs an operation of, while the sheet on the tray is being conveyed toward a sheet edge regulating member by the aligning member, switching the aligning member from the contact state to the non-contact state, and further switching the aligning member from the non-contact state to the contact state. Thus, the sheet processing apparatus reduces an occurrence of a conveyance failure caused by collision of a leading edge of thick paper with a return roller and a return guide member, and maintains good conveyance performance by preventing sheet stick caused by a coating material coated on coat paper.

Abstract: A recording medium post-processing apparatus includes: a recording medium stacking unit on which recording media are stacked; a binding section that binds the recording media by deforming the recording media in a thickness direction, and retracts to the outside of the stacking area of the recording media after binding the recording media; a reference member that functions as a position reference used for aligning the recording media; and an alignment unit that aligns end portions of the recording media facing the reference member by moving the recording media to a position where the recording media come into contact with the reference member from a position where the recording media are separated from the reference member.

Abstract: An image forming apparatus with a stapling function is provided. The image forming apparatus includes a printing device and a stapling device. The printing device is used for printing images on plural papers. The printed papers are transmitted to the stapling device and stapled by the stapling device. The printing device has a printing device casing. The stapling device includes a minor casing and a main casing, which are respectively connected with a first surface and a second surface of the printing device casing. Since the stapling device is connected with two difference surfaces of the printing device casing, the overall height of the image forming apparatus is reduced.

Abstract: A sheet processing apparatus includes pairs of rollers being sheet conveying units that convey recording sheets that are sheet media, a binding tray in which a plurality of recording sheets conveyed by the pairs of rollers are stacked and the recording sheets are retained as a paper bundle, and a stapler being a binding unit that performs a binding process on the paper bundle retained in the binding tray. Target positions on the paper bundle are adjusted by moving both of two jogger fences in an R direction to move the paper bundle in the sheet width direction so as to displace the paper bundle with respect to the stapler.

Abstract: The production line according to the present invention is provided with a pressurization measurement apparatus adjacent to a press-working apparatus, a temporary laminate assembly worked and laminated by a press in the press-working apparatus is sent to the pressurization measurement apparatus, and a laminate assembly is produced by being pressurized and being subjected to regular caulking by a hydraulic servo press of the pressurization measurement apparatus. At this time, the lamination height of a regularly caulked laminate assembly is measured by a linear scale secured at the pressurization measurement apparatus.

Abstract: A sheet processing apparatus includes a laterally moveable post-processing module moveable from a predetermined operating position to a predetermined lateral delivery position and a control unit. The control unit is configured to operate the post-processing module such that a lateral delivery position for a set of at least one sheet is determined, the post-processing module is moved to the operating position, the post-processing module is operable to subsequently engage the set of at least one sheet to obtain a processed set of at least one sheet, then move the post-processing module from the operating position to the delivery position in coupling engagement with the processed set of at least one sheet, to move the processed set of at least one sheet to the lateral delivery position and disengage the post-processing module to deliver the processed set of at least one sheet at the lateral delivery position.

Abstract: A stapler system for an image forming apparatus according to one example embodiment includes a housing and a mounting device for mounting the housing to the image forming apparatus. A staple head is positioned within the housing for stapling media. A media sheet path is disposed within the housing for directing media received from the image forming apparatus to the staple head for stapling. When the housing is mounted on the image forming apparatus, a portion of the housing extends above an output bin of the image forming apparatus to permit delivery of stapled media from the housing to the output bin of the image forming apparatus.

Abstract: A media sheet stacking implement for an image forming apparatus according to one example embodiment includes an exit nip formed by a first exit roller and a second exit roller for advancing media in a media process direction along a media path and delivering the media to an output bin of the image forming apparatus. A pinching element is mounted along the media path downstream from the exit nip. The pinching element has at least one first member and at least one second member movable relative to the at least one first member between a closed state and an open state. An actuating mechanism is operatively coupled with the pinching element for moving the pinching element between the closed state and the open state to allow the pinching element to hold a trailing end of a media sheet to be delivered to the output bin when in the closed state.

Abstract: A booklet is produced. Selectively-printed sheets are cut to length, inner sheets being shorter, and stacked on a ramp set at an adjustable angle to a sheet support. This aligns the fold axes of all the sheets so they can be fastened and folded. Gravity is used to hold the sheets in place on the ramp and sheet support.

Abstract: In an embodiment, a post-processing apparatus includes: a stacking tray; an upward and downward driving unit; a binding unit; and an upward and downward driving control unit. The upward and downward driving unit drives the stacking tray in vertical direction. The binding unit performs binding on recording media on the stacking tray. The upward and downward driving control unit controls such that: descent of the stacking tray is performed before a leading edge of a first sheet among the recording media on which the binding is to be performed reaches a position on the stacking tray; and after the leading edge of the first sheet is positioned on the stacking tray, ascent of the stacking tray is performed before a leading edge of a second sheet among the recording media reaches a position on the stacking tray.

Abstract: To provide a paper-sheet-loading device that makes it easy to take out booklet or the like loaded on a tray. The paper-sheet-loading device 1 is provided with a discharge-processing portion 7 which discharges the booklet or the like through a discharge portion and a discharged paper stacker 8 having a loading stage 80 on which the booklet or the like discharged from the discharge-processing portion 7 is loaded. The loading stage 80 is provided with a tray 81 on which the booklet or the like is loaded and which can be pulled out from the front side of the device and an auxiliary loading member 80b closing the lower side of a rear side of the tray 81 when the tray 81 is pulled out. The auxiliary loading member 80b has a shape after a loading face 81a of the tray 81 and becomes exposed continuously from the lower side of the tray 81 to the rear side thereof, thereby enabling the booklet or the like to be loaded without losing its balance.

Abstract: A printing apparatus has a sheet path and is adapted to produce print job sheets and dividing sheets. The apparatus includes a printing unit for printing the print job sheets. A first device in the sheet path downstream of the printing unit generates dividing sheets. The device includes a deforming unit with a stamp for punching and deforming a partial area of a dividing sheet so that a hook-shaped deformation is imparted in the dividing sheet. An output tray is arranged in the sheet path downstream of the first device and includes an inclined support for receiving the print job sheets and the dividing sheets.

Abstract: A substrate finishing system includes a sheet input that feeds sheets to a compiler for compiling. The sheets may be stapled at the compiler. A trail edge support of the compiler is movable from a first position to a second position. The compiler is configured to drop a sheet or set of sheets to build compiled set stacks at the first and second positions on a stacking tray positioned beneath the compiler.

Abstract: An image forming apparatus includes an image forming unit that forms images on sheets; a stack portion on which the sheets with the images are stacked as a bundle of the sheets with first end parts of the sheets aligned; a first binding unit that binds the first end parts; a second binding unit that binds the first end parts, by a binding method that requires a binding region larger than that of the first binding unit; and a distance reducing unit that changes a position of the bundle when bound by the first binding unit, from a position of the bundle when bound by the second binding unit, and reduces a distance between a part bound by the second binding unit and the first end parts as compared with a distance between a part bound by the first binding unit and the first end parts.

Abstract: An image forming apparatus is able to select a paper-delivery destination for a print output. The image forming apparatus includes a print-process managing unit that divides a print job into print processes and controls a print output; and a sample-print-output controlling unit that controls execution of a sample print output by causing, in response to a sample-print-output request, an interrupt of a duplicate of a predetermined print process of the print job, with the paper-delivery destination being changed, to be handled by the print-process managing unit.

Abstract: A sheet processing apparatus of the present invention includes a post-processing unit provided inside a housing and configured to perform post-processing on sheets discharged from an image forming apparatus, a sheet discharge unit configured to guide sheets having undergone post-processing to a discharge port, a paper discharge tray configured to accommodate sheets discharged from the discharge port and allowed to ascend and descend within a specific height range lower than the discharge port, and a sheet member disposed directly below the discharge port and configured to move along a wall surface of the housing in association with ascending and descending of the paper discharge tray and receive rear ends of the sheets accommodated in the paper discharge tray, a width of a receiving portion thereof in a height direction varying with a quantity of the sheets accommodated in the paper discharge tray.

Abstract: In a bookbinding apparatus, an adhesive applying portion applies an adhesive to an end face of a sheet bundle allowed to stand in the substantially vertical direction, a storage portion that gathers and stores the sheet bundle which is applied with the adhesive and bound in the adhesive applying portion while letting the sheet bundle stand in the substantially vertical direction, transport means for conveying the sheet bundle while letting the sheet bundle stand in the substantially vertical direction from the adhesive applying portion to the storage portion along a substantially vertical transport path, and a cutting portion which is provided on the transport path between the adhesive applying portion and the storage portion, and which cuts an end face of the sheet bundle while letting the sheet bundle stand in the substantially vertical direction.

Abstract: An image forming system includes a first supplying unit, a second supplying unit, an image forming unit, a stacking unit, first and second binding units, an obtaining unit, and a controller. The image forming unit forms images on recording materials supplied from the first or second supplying unit. The stacking unit is for stacking, as a bundle, the recording materials having the images formed thereon. The first binding unit binds, by a first binding operation, first edge portions of the bundle. The second binding unit binds, by a second binding operation, second edge portions of the bundle. The obtaining unit obtains an instruction regarding binding positions of the first and second binding operations with respect to the bundle. The controller performs control to supply the recording materials from the first or second supplying unit, on the basis of the binding positions of the first and second binding operations.

Abstract: A sheet processing device provided with a stacking unit configured to stack thereon one or more conveyed sheets, a staple unit configured to staple a bundle of sheets stacked on the stacking unit, a moving unit configured to move the staple unit to a staple position, and a projecting and retrieving unit configured to project and retrieve the stacking unit in a space overlapped with a motion space for the staple unit to move therein.

Abstract: In a sheet processing apparatus that, for example, sorts or staples sheets after image formation, when preceding finishing is not completed on a processing tray, a third sheet fed anew into awaiting tray of a sheet placing member configuring a sheet waiting unit, which temporarily puts a sheet conveyed thereto on standby, is stacked to be shifted such that leading ends of second and third sheets are located further on a conveying direction upstream side than a leading end of a first sheet. Consequently, longitudinal alignment in the processing tray after that is surely performed.

Abstract: According to an embodiment, a sheet processing apparatus includes: a processing tray on which a sheet conveyed from an image forming apparatus is placed; a lateral alignment unit which has a pair of movable alignment boards, holds and the sheet on the processing tray between the pair of alignment boards, and aligns the sheet; a stapler which staples the sheet placed on the processing tray; a sheet discharge unit which discharges the stapled sheet from the processing tray to a discharge port; and a control unit which control so that the sheet is stapled after an operation of holding the sheet between the pair of alignment boards and then opening the alignment boards is performed plural times, when the sheet is inserted to the stapler from the discharge port and manually stapled.

Abstract: An image forming system includes an image forming unit that forms images on recording materials; a stacking unit used for stacking the recording materials having the images formed thereon as a bundle; a first binding unit that binds, by a first binding operation, first edge portions of the bundle; a second binding unit that binds, by a second binding operation, second edge portions of the bundle; a reversing transporting unit that reverses front and back surfaces of the recording materials having the images formed thereon, and that transports the reversed recording materials to the stacking unit; and a controller that performs control to determine whether or not to cause the reversing transporting unit to reverse and transport the recording materials, on the basis of orientations of the images with respect to the recording materials and positions of the first and second binding operations.

Abstract: There is provided a technique in which a retracting operation of a bundle of sheets from a stapler after a staple process can be stably performed irrespective of the number of sheets constituting the bundle of sheets or the transport resistance. When the bundle of sheets subjected to the staple process is moved by a stacker in a direction of retracting from the stapler, an alignment roller is caused to come in contact with the bundle of sheets held by the stacker and to assist the movement of the bundle of sheet.

Abstract: A printing system capable of increasing the working efficiency of an operator engaged in a post-process necessary after printing can be provided. For this purpose, the user interface unit can execute a display which allows the operator to explicitly input, for each job, instruction information in consideration of a post-process necessary after a printing process in a job requiring a printing process by a printing apparatus in a printing system capable of stacking, on a stacking unit, printed materials having undergone the printing process. When the job to be processed is a job for which the operator inputs the instruction information via the display, printed materials of the job for which the operator inputs the instruction information are stacked on the stacking unit while the printed materials are classified every printed materials on the basis of the instruction information input by the operator for the job.

Abstract: A stapler system for an image forming apparatus according to one example embodiment includes a housing and a mounting device for mounting the housing to the image forming apparatus. A staple head is positioned within the housing for stapling media. A media sheet path is disposed within the housing for directing media received from the image forming apparatus to the staple head for stapling. When the housing is mounted on the image forming apparatus, a portion of the housing extends above an output bin of the image forming apparatus to permit delivery of stapled media from the housing to the output bin of the image forming apparatus.

Abstract: A sheet processing apparatus includes: a staple tray on which sheets are stacked temporarily and stapled after being aligned together and from which the stapled sheets are discharged to a discharge tray; a discharger to discharge the sheets to the staple tray; a rear end reference against which rear ends of the sheets are abutted to be aligned together; a returner to return the sheets discharged by the discharger and to align the sheets together in a conveying direction based on the rear end reference fence; a lifter to lift and lower the returner with respect to a sheet; and a guide configured to guide the sheets toward the rear end reference fence when the sheets are returned and to be lifted and lowered in synchronization with the lifting and lowering by the lifter.

Abstract: A method for dividing print jobs in an output tray of a printing machine includes outputting print job sheets of a print job onto an inclined support of the output tray, so that the print job sheets slide against an abutment to form a stack. A dividing sheet is produced, and a hook-shaped deformation is imparted in the dividing sheet. The dividing sheet is outputted onto the stack formed by the print job sheets on the output tray so that the dividing sheet slides in the direction of the abutment and the deformation becomes propped up against the stack.

Abstract: The present invention provides a post-processing apparatus that can handle recording sheets set to be stapled and recording sheets not set to be stapled in a single job and reliably prevent post-processed recording sheets from falling off a tray. The post-processing apparatus includes a post-processing section 5 that performs stapling processing based on an input condition and two trays 8a and 8b on which processed recording sheets are loaded. The input condition includes mixed-processing information about first processing that involves stapling processing and second processing that does not involve stapling processing. The control section 90 performs the first processing and second processing on the recording sheets in a single job based on the mixed-processing information. The control section 90 loads the recording sheets subjected to the first processing and recording sheets subjected to the second processing onto different trays 8a and 8b.

Abstract: A sheet collecting apparatus has a sheet transport path for transporting a sheet, a tray device for bearing and storing sheets, a regulation stopper for regulating the sheet, a holding path to temporarily hold a sheet, an alignment roller to transport the sheet, and a control device for controlling transport of the sheet. The alignment roller adjusts a level of pressing force acting on the sheet transported onto the tray device. The control device has a first operation mode and a second operation mode. In the first operation mode, the alignment roller applies a transport force to the sheet by a predetermined pressing force after a rear end of the sheet is carried into the tray device, while in the second operation mode, changing the pressing force applied to the sheets from the alignment roller from a first pressing force to a second pressing force and applying varied transport force.

Abstract: In a sheet processing apparatus that, for example, sorts or staples sheets after image formation, when preceding finishing is not completed on a processing tray, a third sheet fed anew into a waiting tray of a sheet placing member configuring a sheet waiting unit, which temporarily puts a sheet conveyed thereto on standby, is stacked to be shifted such that leading ends of second and third sheets are located further on a conveying direction upstream side than a leading end of a first sheet. Consequently, longitudinal alignment in the processing tray after that is surely performed.

Abstract: A sheet stacking apparatus includes an alignment roller which conveys a sheet to a sheet positioning member and an opening and closing shutter which is disposed so as to face a sheet stack surface of a sheet stack guide. The sheet positioning member abuts a sheet end in a sheet conveying direction to align the sheet. The sheet is stacked on the sheet stack guide. The opening and closing shutter has a regulating area where sheet conveying guide and buckling of the sheet are regulated from an upstream side to a downstream side in the sheet conveying direction of the alignment roller. A guide interval formed between the opening and closing shutter and the sheet stack surface can be changed. Therefore, in sheet conveying positioning, the buckling can securely be prevented in the sheet stack guide.

Abstract: The present invention provides a sheet processing apparatus including: a conveying portion which conveys a sheet; a stacking portion which stacks the sheet conveyed by the conveying portion; a first processing unit which performs a process to the sheet at a first process position on the stacking portion; a second processing unit which performs a process to the sheet at a second process position on the stacking portion, the second process position being at the downstream side in the conveying direction of the first process position; and a controlling portion which performs positioning of the sheet at the first process position when the first processing unit performs the process to the sheet and positioning of the sheet at the second process position when the second processing unit performs the process to the sheet which is passed through the first process position without being positioned.

Abstract: The sheet processing apparatus is provided with: a sheet aligning part that accumulates and aligns sheets so as to generate a bundle of sheets; an edge stitching processor that performs an edge stitching process by which the generated bundle of sheets is stitched together at one edge of the bundle of sheets; an apparatus housing that includes an opening portion through which the bundle of sheets is discharged to an outside of the apparatus housing; a saddle stitching processor that performs, outside of the apparatus housing, a saddle stitching process by which the discharged bundle of sheets is stitched together at a center portion of the bundle of sheets in a transporting direction of the bundle of sheets; and a stacking tray that is provided below the opening portion and outside the apparatus housing, and on which the bundles of sheets subjected to the edge stitching process and the saddle stitching process are capable of being stacked.

Abstract: In a sheet aligning apparatus, a pair of sheet aligning members stops at three positions such that when a sheet aligning operation is not conducted, the pair of sheet aligning members is stopped at the first position of an upper level so as not to come in contact with sheets discharged from a discharging section, when the sorting section shifts for sorting, the pair of sheet aligning members is stopped at the second position of a middle level lower than the first position so as not to come in contact with sheets stacked on the tray, and when a sheet aligning operation is conducted, the pair of sheet aligning members is stopped at the third position of a lower level so as to come in contact with the top surface of the tray or the upper surface of the sheets stacked on the tray.

Abstract: In a sheet processing apparatus that performs processing for sheets after image formation such as sorting or stapling of the sheets, sheets conveyed into a waiting tray are temporarily stopped while being kept clamped by a driving roller and a pinch roller in the waiting tray and the clamping is once released. A waiting tray unit on a left side is shifted to a right side by a predetermined amount, whereby an end of the stacked sheets is pushed and shifted by a lateral wall on the left side. Thereafter, the sheets are clamped again by the roller pair and discharged.

Abstract: A sheet processing apparatus according to an aspect of the invention can process a first-size sheet having a first length and a second-size sheet having a second length smaller than the first length. The sheet processing apparatus includes an intermediate stacking portion on which the sheets are stacked; a stapler which performs a stapling process to the sheets; a second alignment reference wall and a first jogger which align the sheets with a stapling process position; and a second jogger which is moved toward the second alignment reference wall and first jogger. Irrespective of a sheet size, the second jogger is moved toward the second alignment reference wall and first jogger by an alignment distance necessary to align the second-size sheet with a stapling process position, which allows the stapler to staple the sheets with at least one of two staple legs.

Abstract: When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly.

Abstract: An spine formation device includes a sheet conveyer, a contact member including a first row of grooves provided in a contact surface thereof to house a projection projecting from a folded portion of a bundle of folded sheets, a driving unit to move the contact member, first and second sandwiching units to squeeze the bundle, a discharge unit, and a controller. The first row of grooves extends in parallel to the folded portion of the bundle and includes at least a first pair of grooves inclined in different directions with an interval therebetween varying in size with location of the grooves in a first direction perpendicular to a sheet conveyance direction. The contact member is moved to change the size of interval between the first pair of grooves at a position aligned with the projection projecting from the folded portion of the bundle of folded sheets.

Abstract: A sheet processing apparatus is disclosed. The sheet processing apparatus has a stacking unit configured to stack a sheet discharged from an image forming unit, the stacking unit including a stacker being configured to support a lower end of the sheet and a supporter being configured to support an under side of the sheet; a driver configured to drive the stacker along the supporter; and an opening configured for allowing removal of the sheet on the stacker to an outside; and a controller configured to control the stacker so that the stacker is driven to the opening along the supporter if a process is cancelled and if the sheet on the stacker needs to be removed.

Abstract: According to one embodiment, a sheet processing device includes a jogger fence configured to carry out a crosswise direction alignment to a stack of image formed sheets ejected from an image forming apparatus, a rear end fence acting as a lengthwise reference edge, a stapling device configured to staple the aligned sheet stack, a discharge belt configured to move the stapled sheet stack to a sheet ejection tray, and a controller to control movement of the jogger fence during the sheet stack being moved by the discharge belt so as to move the jogger fence more than once between a position where the jogger fence does not contact the edge of the sheet stack and a position where the jogger fence pressing contact the edge of the sheet stack.

Abstract: A stapler is provided in a housing of a finisher. The stapler has a sheet insertion opening extending in a direction along conveyed sheets. The stapler staples the sheets inserted into the sheet insertion opening in the housing. The finisher includes a rotating mechanism that rotates, when the stapler is moved in a direction orthogonal to a conveying direction of the sheets and removed to the outside of the housing, the stapler such that the sheet insertion opening of the stapler faces a further upper side than the direction along the sheets.

Abstract: A sheet finishing apparatus includes: a conveying roller configured to convey a sheet to a storage tray; a positioning stopper provided in parallel to a conveying path for the sheet; an aligning roller configured to convey the sheet, move the sheet in a lateral direction orthogonal to a direction of the conveyance, and press the sheet against the stopper to laterally align the sheet; and a moving mechanism configured to move the position of the aligning roller in the conveying direction. The sheet finishing apparatus controls the position of the aligning roller according to a size of the sheet.

Abstract: A sheet finisher includes: a stacking section having a stacking surface arranged to be tilted, and a stopper located below the stacking surface; a sheet finishing section which post-processes for a sheet bundle that hits the stopper and is stacked on the stacking section; a conveying section which sends two sheets to the stacking section under the condition that the two sheets are shifted each other in a conveyance direction and are superimposed; an input section in which sheet type information is inputted; and a controller which adjusts a shift amount between the two sheets so that the sheet on a lower side precedes toward the stopper by a prescribed amount, when a conveyance condition of the conveyance section is changed based on the inputted sheet type information inputted, and the two sheets are conveyed to the stacking section with the two sheets superimposed.

Abstract: A sheet post-processing apparatus of the present invention comprises: a sheet discharge section that feeds a sheet supplied from an image forming apparatus to a post-processing section and leads the sheet that has passed through the post-processing section to a sheet discharge port; a sheet discharge tray that receives a sheet discharged from the sheet discharge port and can move to a first standby position and a second standby position higher than the first standby position and nearer to the sheet discharge port; and a controller that controls the height position of the sheet discharge tray by identifying the type of the sheet. The controller changes the height position of the sheet discharge tray to allow the sheet discharge tray to receive the discharged sheet at the first standby position in the case where the sheet is a first type while to receive the discharged sheet at the second standby position in the case where the sheet is a second type.

Abstract: A post-processing apparatus including: a first conveyance section which superposes a plurality of paper sheets conveyed from an image forming apparatus, and conveys with superposed state; a second conveyance section which conveys the paper sheets, sheet by sheet; a switching section which switches to convey the paper sheets either to the first or to the second conveyance section; a punch processing section which temporally stops the paper sheets from the first or the second conveyance section, and forms punch holes on the paper sheets; and a control section, wherein if determined, based on the basis weight or thickness information of the paper sheet, that the punch processing is not executable on the paper sheets with the superposed state, the control section controls to convey the paper sheets into the second conveyance section, and to execute the punch processing sheet by sheet.

Abstract: A saddle stitching portion which can bind the center portion in the conveying direction of a sheet bundle by a stapler and fold it by a pair of folding rollers and a pushout member, includes an end stopper which receives the downstream end of a sheet conveyed by a first conveying roller in a first receiving position on the downstream of the first conveying roller by a length not buckling the sheet on the downstream of the stapler or the downstream end of the sheet conveyed by a second conveying roller in a second receiving position on the downstream of the second conveying roller by the length on the further downstream, wherein the receiving position of the downstream end stopper is selected according to the length in the conveying direction of the sheet.

Abstract: A post-processing device include a conveyed medium stacking portion, a medium bundle stapling member, a medium bundle stacking portion and a medium bundle stacking control unit. A plurality of recording mediums, on which images are recorded, are conveyed and stacked into the conveyed medium stacking portion. The medium bundle stapling member staples a medium bundle, which is a bundle of the plurality of recording mediums stacked on the conveyed medium stacking portion, with staples. The stapled medium bundle is conveyed and stacked into the medium bundle stacking portion. The medium bundle stacking control unit stacks a second medium bundle on a first medium bundle under the condition that a second stacking stapling position deviates from a first stacking stapling position in a width direction by a distance not less than a staple width.

Abstract: A sheet processing apparatus capable of reliably superposing a sheet to be buffered and a following sheet in a manner displaced by an allowable displacement amount, thereby making it possible to suppress generation of misalignment. A sheet discharged from an image forming apparatus is temporarily held back, and a following sheet is superposed on the held-back sheet in a state displaced in a conveying direction. A length in the conveying direction of the sheet to be held back and a length in the conveying direction of a sheet bundle of the superposed sheets are measured. A displacement amount provided between the superposed sheets, computed as a difference between the measured length of the sheet and the measured length of the sheet bundle, is adjusted such that the displacement amount becomes a target displacement amount.