Abstract: A sheet processing apparatus which is capable of enhancing productivity in flattening a fold top of a sheet bundle. The sheet processing apparatus has a conveying unit that conveys a folded sheet bundle to a processing position, and a holding unit that holds the sheet bundle conveyed by the conveying unit. When the folded sheet bundle has been conveyed by a predetermined distance after a leading end of the sheet bundle has been detected and before the sheet bundle reaches a processing position, the holding unit starts holding the sheet bundle, and then the conveying units stops conveyance of the sheet bundle.

Abstract: A recording medium processing apparatus includes: a first transportation route on which a recording medium is transported; a second transportation route branching from the first transportation route at a branch position; a transporting unit provided downstream of the branch position in a transport direction of the recording medium, the transporting unit (i) feeding at least a part of a first recording medium transported on the first transportation route and having passed through the branch position, into the second transportation route, (ii) transporting the fed first recording medium and a second recording medium with an overlap in the transport direction on the first transportation route to generate a bundle of the first and the second recording media and (iii) feeding the bundle which passed through the branch position into the second transportation route; and a punching unit provided on the second transportation route punching the fed bundle with one punching process.

Abstract: A bookbinding device and a print-medium post-treatment apparatus having the same. In the bookbinding device, when a print medium drops and is loaded a stack plate, a drop position of a leading end of the print medium is changed according to a size of the print medium. This prevents sequence upset of print media when the print media are stacked one above another on the stack plate.

Abstract: A sheet post-processing apparatus which is capable of preventing a stapling position and a folding position from being out of alignment when a stapling process is carried out. A sheet bundle, which is stacked in a housing guide, is stapled by a stapler using a staple at the stapling position. The sheet bundle is folded at a position of the staple after the stapling. After the stapling, the sheet bundle is moved from the stapling position to the folding position. During the movement, the staple is detected using a staple sensor disposed at a predetermined location between the stapling position and the folding position. Based on a moving distance of the sheet bundle before the staple is detected after the stapling process, a position of the sheet bundle with respect to the stapler for stapling on a subsequent sheet bundle is corrected.

Abstract: A post-processing device includes a transport section transporting a sheet; a load section loading the sheet thereon; a first aligner moving the sheet while being in contact with a surface thereof to align the sheet; a second aligner moving the sheet while being in contact with an edge thereof to align the sheet; an alignment controller controlling the aligners to align the sheet based on a first mode in which they simultaneously align the sheet, and based on a second mode, for every predetermined number of sheets, in which one aligner aligns the sheet after the other aligner completes the alignment process; and a transport controller causing the transport section to transport the sheet at a reduced speed for every predetermined number of sheets so that the sheet reaches the load section after completion of the second-mode alignment process performed after a previous sheet is loaded on the load section.

Abstract: Theres is disclosed a device (10) for manufacturing a notepad (15) comprising a stack of sheets, a first side of each sheet having an adhesive to attach the first side to a reverse face of a sheet immediately facing said first side in said stack. The device (10) including a sheet feeder (20) for loading one or more loose sheets (24) of similar dimensions with the reverse face of each sheet (24) in said stack facing in the same direction and feeding each said sheet downstream of said device (10). A cutting means (40) is provided to cut each sheet (24) or a number of said sheets (24) to predetermined dimensions. An adhesive applicator (60) applies adhesive to a portion or portions of the first side of each sheet (24). A stacking means (100) stacks the cut sheets one on top of the other whereby a forming means (120) forms the cut sheets together to form the notepad (15).

Abstract: Disclosed are a bookbinding unit and an image forming apparatus having the same. The bookbinding unit includes a bookbinding unit main body, a pair of stack trays disposed in the bookbinding unit main body so as to support print media on the upper surfaces of the stack trays and a folding knife movable in the space between the pair of the stack trays to fold the print media on the stack trays and to move the folded print media into the space between the pair of the stack trays. The pair of the stack trays is rotatable in conformity with the movement of the print media into the space between the stack trays to provide a surface contact guiding of the folded print media.

Abstract: According to an embodiment of the invention, a sheet folding device includes a pair of folding rollers which nips a sheet between the folding rollers and thus folds the sheet, a folding blade which pushes the sheet in between the pair of folding rollers, and a folding blade control unit which controls the folding blade to fold a first sheet with the pair of folding rollers, then push a second sheet into the fold of the first sheet, and fold the second sheet with the pair of folding rollers over the first sheet.

Abstract: Disclosed is an image forming system including an image forming device which includes a paper feeding tray, a print section which performs printing to papers fed from the paper feeding tray and a control section which controls so as to feed the printed papers to a post-processing device as a booklet main body to be book-bound, and the post-processing device which carries out ring-binding processing to the fed papers and book-binds a booklet, and the control section controls so as to feed a front cover paper, a back cover paper, papers for binding of the booklet to a ring-binding process section of the post-processing device along with the booklet main body, and a paper feeding order is in an order of the back cover paper, the papers for binding, the front cover paper and the booklet main body.

Abstract: A post-processing device includes an introductory conveying path, a processing tray, a paper receiving tray, an upper paper discharge roller, a lower paper discharge roller and a control section. The upper paper discharge roller and the lower paper discharge roller are disposed at an edge portion on the paper receiving tray's side of the processing tray. The upper paper discharge roller is capable of coming into contact with and away from the lower paper discharge roller. The control section causes the upper paper discharge roller to start a descending motion with a timing such that the upper paper discharge roller comes into contact with paper before the paper comes into contact with the paper receiving tray if the paper belongs to a second kind, where the paper of the second kind is lighter weight than that of a first kind.

Abstract: After a sheet has once passed through a punching position, a conveyance roller pair conveys the sheet backward to the punching position. A lateral registration detection sensor detects a side edge position of the sheet in a width direction. When a sheet processing apparatus corrects the side edge position of the sheet by controlling a shift unit for moving the sheet in the width direction so as to correct the side edge position of the sheet, the sheet processing apparatus sets a shifting amount of the sheet to a value that is a predetermined amount greater than a shifting amount required to correct the side edge position of the sheet according to the side edge position of the sheet detected by the lateral registration detection sensor. After the sheet has passed through the die hole the sheet processing apparatus sets the shifting amount to the required value.

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: A skew correction device for aligning a booklet that is a folded bundle of sheets on a conveying path includes a first member against which a leading end of the booklet abuts in a conveying direction; a second member configured to push a trailing end of the booklet in the conveying direction so that the leading end of the booklet abuts against the first member; and a deflection generating member configured to deflect the booklet downward when the trailing end is pushed.

Abstract: The present invention prevents a succeeding sheet from being caught in holes of preceding punched sheets.

Abstract: A control includes causing a processing unit to perform a saddle-stitching binding process in which a plurality of sheets are subjected to a binding process and a folding process or a center-folding binding process in which a plurality of sheets are subjected to the folding process, permitting the processing unit to perform the saddle-stitching binding process or the center-folding binding process on a predetermined number of sheets, and controlling such that the number of sheets which are permitted to be subjected to the center-folding binding process is smaller than the number of sheets which are permitted to be subjected to the saddle-stitching binding process.

Abstract: An insertion system includes a folding device to perform either single-sheet folding to fold a single sheet at a time or batch folding to fold multiple sheets together at a time, an insertion device to insert into an envelope the sheet folded by the folding device, and a batch setting unit to designate either the single-sheet folding or the batch folding from a folding and insertion menu for multiple sheets at a time when the multiple sheets are processed by the folding device and the insertion device.

Abstract: A sheet processing apparatus includes a conveying unit that conveys a booklet formed by folding a sheet bundle; a processing unit that performs a predetermined process on the booklet; a booklet holding unit that includes first and second holding members to hold the booklet and varies a gap distance between the first and second holding members depending on a state of processing the booklet while the sheet processing unit is performing the process on the booklet; and a pressing unit that presses and fixes the booklet while the processing unit is processing the booklet.

Abstract: First and second buffer roller pairs are driven such that a sheet conveyed sequentially by a conveying roller pair is overlapped with a standby sheet by shifting in a sheet conveying direction and such that the overlapped sheets standby at a branch path. A shift length in overlapping the standby sheet with the conveyed sheet is set such that the more the number of times of drawal into the branch path of the sheet, the shorter the shift length becomes. Thereby, the shift length between the respective sheets turns out to be a predetermined shift length in overlapping the standby sheets with a final conveyed sheet and conveying the sheets to an intermediate processing tray.

Abstract: A sheet stacking apparatus includes a discharge unit, a stacking tray, an acquisition unit, a shift control unit, and an alignment unit. The shift control unit controls a stacking position of a sheet in a sheet width direction in response to shift information acquired by the acquisition unit. The alignment unit aligns a sheet staked on the stacking tray and moves to a position that abuts on a side edge of the sheet in the sheet width direction to align the sheet. The shift control unit controls a stacking position of a second sheet to stack the second sheet on a second position or on a first position depending on where a first sheet is stacked and on shift information of the second sheet.

Abstract: The post-processing device includes: a binding unit that forms a cut in a sheet stack and cuts a part of the sheet stack into a predetermined shape to form a tongue portion in the sheet stack, the tongue portion having a part where one end part of the tongue portion is not separated from the sheet stack, and binds the sheet stack by bending the tongue portion and inserting the other end part of the tongue portion into the cut; and a sheet stack transport unit that transports the sheet stack in an orientation such that the one end part of the tongue portion in the sheet stack bound by the binding unit is on a downstream side of the other end part of the tongue portion in the sheet stack transport direction.

Abstract: A sheet processing apparatus which has a flattening processing unit which presses a folded end of a folded booklet bundle to flatten the folded end, and cutting units which cut and align edges of the booklet bundle, wherein the edges crossing the folded end of the booklet bundle are cut by the cutting unit and the folded end of the booklet is then flattened by the flattening processing unit.

Abstract: A paper processing apparatus includes a tray, a conveying section, a catching member, a paper processing section, a moving mechanism, and a control section. The catching member includes an abutting surface which abuts a top part of paper in a conveying direction of the paper and a covering part which covers one of one surface and the other surface of the paper, and is disposed at a downstream side in the paper conveying direction. The control section controls the moving mechanism to move a paper processing section between a standby position at which the catching member is received in a processing region and a processing position at which the paper is received in the processing region. The control unit controls the conveying section to convey the paper to the tray in a state in which the moving mechanism positions the paper processing unit at the standby position.

Abstract: A sheet processing apparatus capable of high-speed and accurate detection of a lateral displacement and a skew of a sheet. A motor laterally shifts the sensors during sheet conveyance by a conveying motor, to determine first and second positions of the sheet lateral edge detected respectively by first and second sensors. A finisher controller determines a third position of the lateral edge of the sheet closer to a sheet trailing edge, based on the first and second positions and an amount of conveyance of the sheet from when the first position is detected to when the second position is detected. A lateral displacement of the sheet is corrected by laterally shifting the sheet according to the third position of the sheet lateral edge.

Abstract: An image forming system including a control section provides control in such a way that, the ring binder of the size determined for the first set of copies is adopted so that ring binding is performed for a second set of copies or copies thereafter in a case of executing a job for ring binding of a plurality of copies. When at least one of a status change in the sheet feed section, a main power source being turned off, or a change in a job ticket is occurred from a suspension to a resumption of the job, since the thickness of a bundle of sheets may change, the thickness measuring section is caused to measure the thickness of the bundle in a first set of copies subsequent to resumption. And the control section judges continuation or suspension of a job.

Abstract: The device (10) for stacking sheets (40) arranged to form stacks (4) downstream of a sheet cutting line and comprises an unroller, a printer and a cutter (6). The device has a stacking table (20) located in the same plane as an evacuation conveyor (5) and the device includes an unloading conveyor (7) with first and second ends (70, 71), The unloading conveyor (7) is arranged to transfer the cut sheets (40), one by one, from the cutter outfeed conveyor (3) towards the stacking table (20) and is coupled with driving mechanism arranged to move the second end (71) between a low position in which the second end (71) is located at the level of the stacking table (20), and a high position in which the second end (71) is located at a height corresponding to that of the complete stack (4).

Abstract: In one embodiment, there is provided a feeder that includes: a feed table on which a plurality of papers are staked in one direction, wherein some of the papers are bundled by a staple; a take-out module configured to sequentially take out the stacked papers from an outermost surface of the papers; a first detector configured to detect whether or not the staple exists in the papers within a distance h measured from the outermost surface; a controller configured to control the take-out module in a first mode or a second mode. When the staple is detected in the papers within the distance h, the controller controls the take-out module in the first mode. When the staple is not detected in the papers within the distance h, the controller controls the take-out module in the second mode.

Abstract: A sheet processing apparatus according to an embodiment comprises a processing tray configured to receive sheets to be processed, the processing tray having an ejecting side from which sheets are ejected, and a loading tray provided downstream from the processing tray in a sheet ejecting direction and configured to receive sheets ejected from the processing tray. The sheet processing apparatus further comprises a bending restrainer including a restraining member extending almost parallel to the processing tray and covering a portion of the ejecting side of the processing tray, the restraining member configured to restrain bending of sheets ejected from the processing tray to the loading tray.

Abstract: An image forming apparatus and a control method thereof which performs an auto-recovery function, the image forming apparatus including: a housing including a door; an image forming unit mounted in the housing to form an image on a print medium; a medium discharger which discharges the print medium to an outside of the housing; a finisher mounted on the housing to perform a finishing operation; a discharging direction changer which changes a discharging direction of the print medium to guide the print medium to one of the medium discharger and the finisher; and a controller which controls the image forming unit, the finisher and the discharging direction changer, and selectively performs an auto-recovery operation to automatically recover a jam of the print medium depending upon an occurrence location of the jam of the print medium if the jam occurs from a predetermined location of a print medium feeding path.

Abstract: A sheet processing apparatus that forms unevenness on a sheet bundle including a plurality of sheets to bind the sheet bundle includes: a scoring portion that scores the sheet along an edge of the sheet bundle apart from the edge of the sheet bundle at a predetermined interval; and a binding portion that forms an unevenness between the edge of the sheet bundle and the score formed on the sheet bundle by the scoring portion while the sheet bundle is nipped between a pair of tooth-like members, each of which has a concavo-convex portion that meshes with each other.

Abstract: The sheet processing apparatus processes a sheet having an image formed thereon by an image forming apparatus. The sheet processing apparatus includes a sheet folding unit for folding the sheet having an image formed thereon, a sheet tray loaded with the sheet folded by the sheet folding unit to be taken out, and a control unit for controlling the sheet processing apparatus as a whole. The sheet tray includes a mechanism capable of adjusting an angle with a virtual plane and a detection device detecting a change of the angle with the virtual plane. The control unit prohibits ejection from the sheet folding unit to the sheet tray, based on the detection result of the detection device and the content of the folding processing by the sheet folding unit.

Abstract: A sheet processing apparatus includes a punch portion punching a hole at an end part of a sheet, and a push-out member discharging the sheet by pushing the end part of the sheet where the punch process is performed by the punch portion. The push-out member discharges the sheet at a sheet discharging speed lower than a predetermined speed from the intermediate process tray in accordance with punch process information (i.e., combination of a size and a type of the sheet and number, a shape and a size of holes) that strength of a sheet end part is decreased by the punch process, and is lower than predetermined sheet strength capable of being discharged at the predetermined speed.

Abstract: A folding line is pressed using both a first and second pressing members of press roller pairs. Further, positions of the first and second pressing members are shifted from each other. When the number of the sheets included in a booklet is a predetermined number or less, the folding line is pressed by only the first pressing member. When the number of the sheets is more than the predetermined number, the folding line is pressed by both the first and second pressing members.

Abstract: A sheet processing apparatus, including an ejection section; a sheet stacking section; an abutting unit; a driving section; a control section; and a rotating member which has a rotating shaft in parallel with a width direction of the sheet bundle and is held so as to rotate from above the base end portion of the sheet stacking section through a gap of a predetermined width in the abutting unit. The control section starts rotation of the rotating member after lowering of the sheet stacking section is stopped, and when the rotation is started, the rotating member operates so as to abut a rear portion of a surface of the sheet bundle stacked on the sheet stacking section and pass through the gap in the abutting unit.

Abstract: A sheet processing apparatus which is capable of stabilizing a stop position of the sheet bundle, to thereby enable creation of a high finish quality product, and is compact in size and can be manufactured at low costs. Conveyance belts convey the sheet bundle to a flattening position. A pressing roller flattens the folded spine of the sheet bundle by pressing the folded spine. Clampers hold the sheet bundle such that the sheet bundle is not moved when flattening is performed. A CPU starts to stop driving of the conveyance belts when the sheet bundle is conveyed to a predetermined location upstream of the flattening position in the conveying direction of the sheet bundle, and stops the sheet bundle at the flattening position by holding the sheet bundle with the clampers before the conveyance of the sheet bundle is stopped.

Abstract: A sheet processing apparatus that forms asperity on a sheet bundle so as to bind the sheet bundle, has a pair of rotating members having a concave and convex portions on the outer periphery, a moving portion that moves at least one of the pair of the rotating members so as to nip the sheet bundle by the pair of the rotating members or release the sheet bundle, and a controlling portion that controls the moving portion to allow the pair of rotating members to rotate with a concave portion of one rotating member and a convex portion of the other meshed with each other while nipping the sheet bundle or releasing the sheet bundle.

Abstract: A sheet processing apparatus includes a sheet stacking unit, a binding unit, a folding unit, a conveyance unit, a press unit, a grasping unit, and a control unit. The binding unit performs binding processing on a sheet bundle stacked in the sheet stacking unit. The conveyance unit conveys a sheet bundle folded by the folding unit. The press unit presses a fold line portion of the conveyed sheet bundle from a direction perpendicular to a surface of a front page of the sheet bundle while moving along the fold line portion. The grasping unit is switched between a first state in which the grasping unit fixes the sheet bundle in position and a second state in which the grasping unit does not grasp the conveyed sheet bundle. The control unit shifts the grasping unit to the first state and causes the press unit to press the sheet bundle.

Abstract: A sheet processing apparatus includes a feed-in path through which a sheet is fed, a first transport path through which a sheet fed from the feed-in path is transported, and a second transport path through which a sheet fed from the feed-in path is transported. The sheet processing apparatus also includes the following elements. A first processor sequentially stacks sheets output from the first transport path and performs first processing on a bundle of stacked sheets. A second processor sequentially stacks sheets output from the second transport path and performs second processing, which is different from the first processing, on a bundle of stacked sheets. A common retention path causes a sheet fed through the feed-in path to temporarily remain on the common retention path and causes the sheet temporarily remaining on the common retention path to be output to one of the first and second transport paths.

Abstract: A sheet post-processing device includes: a temporary holding unit temporarily holding a sheet supplied by an image forming apparatus; and a shifting unit performing a shifting operation on a sheet bundle, the sheet bundle including two or more sheet, wherein an extra sheet not included in the sheet bundle is supplied to the shifting unit without temporarily holding the extra sheet in the temporary holding unit or by shortening a holding duration time in the temporary holding unit; and when the shifting operation is not completed on a sheet in queue immediately before the extra sheet when the extra sheet is received, the shifting unit is set to a waiting condition until the extra sheet is supplied to the shifting unit.

Abstract: A sheet post-processing apparatus includes a guide portion, a command input unit, a post-processing unit, and a guide controller. The guide portion guides a sheet bundle including the sheet carried from a carry-in portion to the processing position. The command input unit that accepts input of a manual execution command. The post-processing unit performs a predetermined post-process on the sheet bundle disposed at the processing position based on the manual execution command input through the command input unit. The guide controller is connected to the image forming apparatus in a signal-receivable manner to receive sheet size information in an image formation period of the image forming apparatus and to control driving of the guide portion to change a guide size based on the received sheet size information so as to match the guide size with sheet bundles having different sheet sizes.

Abstract: A sheet processing apparatus includes a pair of squeezing members having a projection and a recess to engage each other, to squeeze a sheet bundle inserted therebetween in a direction of thickness of the sheet bundle, and a pressure applying unit to apply pressing force to the squeezing members to squeeze and bind the sheet bundle. The pressing force generated between the squeezing members by the pressure applying unit increases in strength as a relative distance between the squeezing members decreases.

Abstract: In an embodiment, a booklet conveying device includes: a pair of conveying units; a positioning unit; a pressing unit; and a conveying-force changing unit. The pair of conveying units convey a booklet made of a stack of folded sheets, and change a distance therebetween. The positioning unit positions the booklet by making a leading-end portion of the booklet abut thereto. The pressing unit presses the booklet positioned by the positioning unit onto one of the conveying units in order to fix. The conveying-force changing unit changes the conveying force exerted by the conveying units.

Abstract: A skew correction device includes: a conveying path through which a booklet formed by folding a sheet bundle is conveyed in a conveying direction; a positioning unit on which a leading-end portion of the booklet in the conveying direction is to abut, the positioning unit being arranged to be able to protrude into and retreat from the conveying path; an abutting unit that pushes a trailing-end portion of the booklet in the conveying direction, thereby moving the booklet toward the positioning unit and causing the leading-end portion of the booklet to abut on the positioning unit; and a pushing force changing unit that changes a pushing force applied by the abutting unit to the booklet to push the booklet against the positioning unit based on a pushing amount of the abutting unit to the booklet.

Abstract: A post-processing apparatus with a sheet ejection device includes a first sheet tray, a second sheet tray, and a sheet ejection arm. The sheet ejection arm includes a first pushing element and a second pushing element. The second pushing element is pivotally coupled to the first pushing element. The tail edges of the plural paper sheets are pushed by the sheet ejection arm from the first end of the first sheet tray, so that the plural paper sheets are moved toward the second end of the first sheet tray. When the tail edges of the plural paper sheets reach the second end of the first sheet tray, the second pushing element is swung toward the second sheet tray to press the tail edges of the plural paper sheets, so that the plural paper sheets are aligned with each other and smoothly fallen down to the second sheet tray.

Abstract: To provide a sheet storage apparatus for enabling a sheet to be aligned so that the length-direction position and width-direction position of the sheet coincide with correct reference positions in positioning and storing the sheet in a predetermined position on a tray, it is configured that a paper feed rotating member in a center portion of a sheet that is carried out onto the tray and a paper-pressing guide in the side portion are disposed swingably up and down in the sheet load direction, and that the paper-pressing guide moves upward integrally with the paper feed rotating member floating a predetermined amount or more from the sheet top surface on the tray corresponding to a curl of the sheet.

Abstract: A sheet loading device that includes a tray having a sheet loading surface, transports sheets one by one to the tray along a transport path, and loads the sheets one by one onto the sheet loading surface, comprising: a guide member for guiding a sheet to the tray along the transport path; a drive member; a restriction member; and a bias mechanism. Along a course of movement for pressing a loaded sheet against the sheet loading surface, the guide member engages with the restriction member, causes the restriction member to move to a position for restricting forming of a curl on the loaded sheet, and thereby prevents the transport path from being blocked by the curl. When the engagement between the guide member and the restriction member is released, the restriction member returns to an initial position by bias force applied by the bias mechanism.

Abstract: A finisher deforms a fold end portion of a sheet bundle with a lower pressing plate and an upper pressing plate. A pressing unit holds a sheet bundle so that the fold end portion is positioned between the lower pressing plate and the upper pressing plate. A third pressing roller includes a third pressing surface that presses the fold end portion of the sheet bundle between the lower pressing plate and the upper pressing plate. The third pressing roller moves in between the lower pressing plate and the upper pressing plate. The third pressing roller or the pressing unit moves so that the third pressing surface of the third pressing roller presses the fold end portion at a predetermined position based on a tip of the fold end portion. The fold end portion projects after the sheet bundle is held between the lower pressing plate and the upper pressing plate.

Abstract: A sheet processing apparatus includes a punch motor, an actuator which rotates by driving of the punch motor, a punching blade which punches a sheet by driving of the actuator, and a controller which controls the driving of the punch motor so that approach run is gained, if a thickness of the sheet exceeds a threshold, in a rotating direction of the actuator in which the punching blade does not move at the beginning of the driving of the punch motor.

Abstract: When sheets (1, 2) with different sizes are processed to a mail item, sheets (1, 2) with different sizes in conveying direction are supplied along first and second conveyor tracks, gathered into a stack and then folded. The folding of the stacked set (7) takes place with at least one predetermined folding length (a). In response to a difference between the folding length (a) and the size of the sheet (2) of the second size, which is within a predetermined range, the conveyor tracks (5, 6) are controlled by the control structure (9) for combining at least the sheets (1, 2) with leading edges (10, 11) at a mutual distance in the conveying direction (3) and with trailing edges (12, 13) at a mutual distance in the conveying direction (3) to form the set (7). From the combining until the folding, the sheets (1, 2) are mutually fixed and during folding, at least one fold (14) is provided in the sheets (1, 2).

Abstract: A sheet processing apparatus includes: a holding portion which holds a booklet containing a two-folded sheet; and a pressing portion which presses a spine of a booklet into shapes during movement along the spine of the booklet held by the holding portion. The pressing portion can decrease, or release a pressing force to be applied to the booklet spine within a predetermined area of a moving range in which the pressing roller moves along the booklet spine.

Abstract: A sheet processing device includes a stacking unit that is used to stack a bundle of sheets that are placed upon each other with first edge portions of the sheets being aligned with each other; a first binding unit that binds the first edge portions of the bundle of sheets stacked upon the stacking unit; a second binding unit that is provided integrally with the first binding unit in a direction along the first edge portions of the bundle of sheets stacked upon the stacking unit, and that binds the first edge portions by a binding method differing from a binding method of the first binding unit; and an angle changing mechanism that is capable of changing an angle of the first binding unit with respect to the bundle of sheets when binding the first edge portions with the first binding unit.