Abstract: A system for preparing a collation of sheets for a subsequent folding operation wherein edges of the collation are aligned to eliminate the need for additional trimming operations. The system comprises: a cutting device operative to cut each sheet of the collation based upon a length dimension of each of the inner and outer sheets, an accumulating device operative to stack the sheets to form the collation, a registration device operative to register at least one edge of the collation, a conveyance device for transporting the sheet material along a feed path to the cutting, accumulating and registration devices, and a processor operatively coupled to, and controlling, the cutting, accumulating, registration and conveyance devices.

Abstract: Disclosed is a sheet processing apparatus that forms folding lines at a predetermined position of a sheet after image formation and outputs the sheet. The apparatus includes a contact unit with which a tip end or a rear end of the conveyed sheet comes into contact and by which a deflection is formed at a middle part of the sheet; folding units that form the folding lines by conveying the middle part of the sheet, at which the deflection is formed by the contact unit, between the folding units; and a deflection controlling unit that controls the deflection at the middle part of the sheet formed by the contact unit.

Abstract: A creasing device includes: a first member including a creasing blade; a first receiving member including an attachment surface where the first member is to be attached; a second member arranged to face the first member and including a first creasing channel and a second creasing channel opposite to the first creasing channel, the first creasing channel configured to allow the creasing blade to be fitted thereinto with the sheet between the first creasing channel and the creasing blade, the second creasing channel configured to allow the creasing blade to be fitted thereinto with the sheet between the second creasing channel and the creasing blade; a second receiving member including an attachment surface where the second member is to be attached; and a driving section that brings the first and second members into contact with each other and separates the first member and the second member from one another.

Abstract: A stapler apparatus includes a clamp positioned to receive and stack sheets from a printing device, a support plate comprising a groove directing the clamp along one path of multiple paths, the multiple paths alternately directing the clamp relatively closer to one of multiple staplers. A first biasing member applies a first force to the clamp toward a closed position, and a first extension applies a second force to the clamp toward an open position. A second biasing member applies a third force to the clamp toward the open position.

Abstract: A first discharging portion that discharges a sheet received from one of image forming apparatuses and a second discharging portion that discharges a sheet received from the other image forming apparatus are disposed so as to be opposite to each other in order to stack the sheets discharged in a common processing tray. A controller that controls the first discharging portion and the second discharging portion, when the sheets are continuously discharged by the first discharging portion and the second discharging portion to the processing tray, controls a timing when the sheets are discharged by the first discharging portion and the second discharging portion to the common processing tray such that a leading edge of the sheet discharged from one of the discharging portions abuts on a sheet surface in the downstream of a discharging direction below a leading edge of the sheet discharged from the other discharging portion.

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: 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: Methods for forming a signature are provided. In one aspect an automatic z-folding system is used to cause a signature print to fold across a width proximate to z-fold locations spaced along a length of the signature print and to form a z-folded stack of sheets of the signature print and the z-folded stack is bound across a width of the stack proximate to a saddle fold location between the z-folds; saddle folding the z-folded stack at the saddle fold location to dispose the z-folds along a common face of the saddle folded stack, and, separating the signature print at least one of the z-folds.

Abstract: The present invention provides a sheet post-processing apparatus for performing squaring processing of a spine in a well-looking manner without leaving “wrinkles” on back portion of booklet and an image forming apparatus including such a sheet post-processing apparatus. It is a characteristic feature thereof that when squaring of the spine by reciprocating the pressing unit along the spine of the booklet by the moving unit is performed, the distance from the spine of the booklet prior to squaring by the pressing unit to the pressing position is changed by the changing portion such that the distance of a backward movement of reciprocating the pressing unit becomes larger than the distance of a forward movement.

Abstract: A sheet folding device that performs a folding process on a bundle of sheet members includes: a folding unit that folds the bundle of the sheet members; a pushing unit that abuts on a surface of the bundle of the sheet members so as to push the bundle of the sheet members into the folding unit; pressing plates that form a pair, that have convexly curved surfaces to face each other, and that form a crease by pressing the bundle of the sheet members therebetween; a driving unit that performs a pressing operation and a press-releasing operation of the pair of the pressing plates; a moving unit that moves a pressing position of the pair of the pressing plates interposing the bundle of the sheet members; and a control unit that controls the driving unit and the moving unit. The control unit controls a moving speed of the pressing position.

Abstract: According to one embodiment, a sheet processing apparatus includes a reinforce roller to further reinforce the fold of a sheet which has been folded by a fold roller pair, a support portion to move the reinforce roller in a direction perpendicular to a sheet conveying direction, a motor to drive the support portion, and a control unit to control the motor so that the support portion moves at a faster moving speed at the time of a homeward route than a moving speed at the time of an outward route.

Abstract: Z-fold signature finishing systems are provided. One z-fold finishing system has a receiver system to receive a signature print; an automatic z-fold system configured to make a z-folded stack of sheets formed from separate portions of a length of a signature print with each sheet being joined to at least one other sheet in the z-folded stack by at least one of the z-folds; a binding system that can bind the z-folded stack proximate to a saddle fold location between the z-folds; a saddle folder having at least two surfaces arranged so that the at least two surfaces and the z-folded stack can move relative to each other to cause the z-folded stack to fold proximate to the saddle fold location to dispose the z-folds along a common face of the saddle folded stack, and, a separation system separating the signature print proximate to at least one of the z-folds.

Abstract: A sheet processing apparatus includes a folding roller unit configured to form a fold in a sheet while the sheet passes through a nip of rollers, and a fold-enhancing roller unit having a first roller, a second roller, and a third roller, the first roller being provided facing a first surface of the sheet, orthogonal to a direction of transport of the sheet, the second and third rollers being provided facing a second surface of the sheet orthogonal to the direction of transport of the sheet and different from the first surface, the second and third rollers forming nips with the first roller, in which the fold-enhancing roller unit is moved along the fold with the sheet nipped in the nip between the first roller and the second roller and in the nip between the first roller and the third roller, to form a fold.

Abstract: A sheet post-processing apparatus for performing post-processing on a sheet having an image formed thereon. A stapling section or a scoring section performs processing on a sheet and a sheet bundle. The upper limit value of a sheet count of sheets processable at a time by the post-processing unit is equal to N (N is an integer). A buffer path performs buffer processing for retaining a conveyed sheet, placing the retained sheet and a sheet following the retained sheet one on the other, and conveying the superimposed sheets as a sheet bundle. A CPU controls the buffer path the stapling section or the scoring section such that when the processing is being performed on the sheet or the sheet bundle, the buffer processing is performed on a following sheet, and that the processing is performed on each sheet bundle having been subjected to the buffer processing.

Abstract: According to one embodiment, a sheet processing apparatus includes a roller unit having a reinforce roller which moves along a fold of a sheet perpendicular to the sheet conveying direction and thereby further reinforces the fold by the reinforce roller, and a control unit which counts the number of halts of the roller unit generated during the reinforcing operation of the sheet, and in case that the counted number of the halts of the roller unit is less than a prescribed number of times, makes the roller unit to be moved to a retract position and then makes the roller unit to be driven again to perform the reinforcing operation.

Abstract: This invention provides a system and method for aligning, feeding, trimming, slitting, rotating, cross-slitting and stacking sheets, each containing one or more discrete page images thereon that allows for greater automation of the overall process so that reduced or no manual intervention is required to generate completed book stacks or “blocks” from a stream or stack of printed sheets. Sheets are fed to a first, upstream trimming station to remove margin edges and optionally separate the sheets relative to the discrete page images. The sheets are then rotated 90 degrees and fed to a second, downstream trimming station that trims the right-angle edges and optionally separates the sheets into a final group of full-bleed pages, removing margins and gutter strips. The sheets are feed to a stacking assembly to be tacked in page order and any rejected, defective sheets or stacks are removed from the order.

Abstract: A control apparatus obtains information identifying sheets stored in an MFP to be caused to perform printing for printing a printed object to be subjected to jacketed book binding, wherein this information is stored in the MFP. The control apparatus stores thicknesses of respective paper sheets as information about paper sheets. From this information and from the information obtained from the MFP, the control apparatus creates a table indicative of the correspondence between the respective paper sheets stored in the MFP and their thicknesses. Further, on receiving a selection of paper sheets to be used for printing for the printed object and a number of these paper sheets, the control apparatus determines a thickness of each paper sheet by making a reference to the table and calculates the spine jacket width by multiplying the thickness by the number of paper sheets.

Abstract: A sheet collecting apparatus includes a sheet discharge outlet for sequentially carrying out a sheet, a sheet collecting device to load and store the sheet from the sheet discharge outlet, a stopper device for regulating a front end position of the sheet loaded on the sheet collecting device, a stopper driving device for shifting a position of the stopper device, and a carry-in guide member for guiding the sheet from the sheet discharge outlet onto an uppermost sheet collected on the sheet collecting device. The carry-in guide member includes a pivot point, a slide-contact guide surface that swings on the pivot point corresponding to a load amount of the sheet collecting device to guide a sheet front end fed from the sheet discharge outlet onto the uppermost sheet, and a sheet pressing portion continued to the slide-contact guide surface and pressing the uppermost sheet on the sheet collecting device.

Abstract: A sheet processing apparatus includes: a correcting unit that corrects alignment of a sheet; a post-processing unit that performs post-processing on the sheet after the correcting unit corrects the alignment of the sheet; and a creasing unit that forms a crease on the sheet after the correcting unit corrects the alignment of the sheet.

Abstract: A scrap stacking apparatus includes a stacking portion to which scraps, generated in processing portions that carry out processes on sheets, are stacked, an oscillation portion that is placed out of the stacking portion, and generates an electromagnetic wave, and a receiving portion that is placed out of the stacking portion, and receives the electromagnetic wave oscillated by the oscillation portion through the stacking portion, wherein the oscillation portion generates an electromagnetic wave in a band from 30 GHz to 100 THz, and the electromagnetic wave, oscillated by the oscillation portion, is received by the receiving portion through the stacking portion so that a stacked state of the scraps housed in the stacking portion is detected.

Abstract: An image forming system including an image forming section to print images on sheets; a conveyance path through which the printed sheets are conveyed; a post-processing section which executes post-processing to form a booldet from a bundle of sheets conveyed through the conveyance path; a plurality of overlapping sections each of which is disposed between the image forming section and the post-processing section, makes the sheets temporarily wait, forms a bundle of sheets by overlapping a plurality of waiting sheets, and conveys to the post-processing apparatus; a control section which, with respect to a second or later booldet set in case of continuously forming booldet sets, controls a number of the sheets to be conveyed to the overlapping section, a conveying order of the sheets, and a timing to convey the sheets to a downstream side, based on a period of executing the post-processing.

Abstract: A perforation apparatus, having: a perforation device to perforate a sheet by a punch; a pair of aligning members to align the sheet in a sheet width direction; and a contact member to contact with an trailing edge of the sheet, capable of being inserted and retracted with respect to a conveyance path of the sheet, disposed at an upstream side of the punch in the sheet conveyance direction; wherein the sheet is moved and aligned to a sheet aligning position while being grasped by the aligning members, the aligning device is retracted from the sheet aligning position after the aligning operation is completed, subsequently the contact member pushes the trailing edge of the sheet and conveys the sheet to a predetermined position, then the sheet is perforated by the perforation device.

Abstract: A creasing device that creases sheets on a per-sheet basis and includes: a first member extending perpendicularly to a sheet conveying direction and including a convex blade; a second member extending perpendicularly to the sheet conveying direction and including a concave blade, into which the convex blade is to be fitted; a drive unit that brings the first and the second members into and out of contact with each other, thereby producing a crease in a sheet interposed between the first and the second members; a sheet retainer driven by the drive unit and brought into contact with the second member with the sheet therebetween to retain the sheet across its full width; and a holding unit that holds the sheet retainer in a retaining state during creasing where the contact between the first and the second members starts at one point and develops in one direction.

Abstract: A sheet processing apparatus includes an overlap conveying unit that conveys two or more sheets in an overlapping manner; a stacking unit that stacks therein the sheets conveyed in the overlapping manner; an aligning unit that includes a rotating body and a regulating member and is configured to bring the rotating body into contact with a topmost sheet among the stacked sheets, so as to make the sheet abut the regulating member and align ends of the sheets; and a controller that controls the overlap conveying unit. The controller is configured to determine, according to sheet information, whether to make the topmost sheet overlap in a condition of projecting from the other sheets.

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 folding unit folds the sheet bundle that is subjected to binding processing. The conveyance unit conveys the folded sheet bundle. The press unit presses a fold line portion of the conveyed sheet bundle. The grasping unit is separate from the conveyance unit and switches between a first state in which the grasping unit grasps the conveyed sheet bundle to fix 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 and an image forming apparatus are provided which can stabilize the shape of the spine after a squaring process. To square a spine Sb of a sheet bundle S, a spine processing apparatus 400 which squares the spine Sb performs squaring of the spine by moving the spine Sb which projects from a pair of first nipping rollers 405 and 406 while pressing the spine Sb by means of a pressing roller 411 in a state where the spine Sb is nipped by a pair of second nipping rollers 403 and 404.

Abstract: A sheet post-processing apparatus capable of stably stopping a clamping member at a predetermined target position (holding position), of performing post-processing regardless of thickness of a sheet bundle. A holding member is used for holding a sheet bundle. A moving unit moves the holding member between a predetermined reference position and a predetermined holding position at which the holding member holds the sheet bundle. A sheet post-processing unit performs post-processing on the sheet bundle held by the holding member. A control unit configured to, when the holding member is moved from the reference position and is stopped at the holding position by the moving unit, decelerate a moving speed of the moving unit, before performing a stopping process of the moving unit, such that a deceleration rate of the moving speed is smaller as a thickness of the sheet bundle is larger.

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 bundle treatment apparatus may include a folding device, a conveying unit, a flattening device, and a control unit. The folding device performs a folding process on a sheet bundle to produce a folded sheet bundle. The conveying unit conveys the folded sheet bundle. The flattening device performs a flattening process to press a folded portion of the sheet bundle from the folded portion toward a fore edge to flatten the folded portion after the conveyance of the sheet bundle. The control unit causes the sheet bundle to be conveyed at a first velocity when the flattening process is not to be performed, and causes the sheet bundle to be conveyed at a second velocity which is slower than the first velocity when the flattening process is to be performed, thereby stopping the sheet bundle at a position where the flattening process is to be performed.

Abstract: A sheet processing apparatus includes a conveying portion which can move a sheet in a sheet conveying direction and in a sheet width direction, a moving portion which moves the conveying portion in the sheet width direction, a punching portion which punches a hole in the sheet, and a pressing portion which presses an upstream end of the sheet. The sheet forms a first loop to correct skew feeding while the sheet is conveyed with its downstream end abutted against the conveying portion in the sheet conveying direction. The conveying portion conveys the sheet. The moving portion moves the conveying portion in the sheet width direction to correct lateral registration of the sheet. The pressing portion presses an upstream end of the sheet in the sheet conveying direction and forms a second loop of the sheet to correct skew feeding. The sheet is positioned with reference to the pressing portion.

Abstract: A sheet processing apparatus includes a staple processing portion and a sheet stacking portion on which a sheet is stacked and abutted. The sheet processing apparatus also includes a fold processing portion, a conveyance guide member, an end part processing portion to perform an end part process to the folded end part, and a controlling portion. After a stapling process is performed, the fold processing portion folds the sheet bundle in two to create a folded sheet bundle having a folded end part between a first surface and a second surface. The conveyance guide member guides the folded sheet bundle with the folded end part as a leading end while the first surface slides against the conveyance guide member. The controlling portion controls the positioning member such that the stapling position is moved, by a predetermined distance, to an area on the sheet bundle that will become the second surface.

Abstract: A creasing device, that forms a crease on a sheet, includes: a first member, extending in a direction perpendicular to a sheet conveying direction, on which a convex blade is formed; a second member on which a groove-like concave blade is formed such that the convex blade can be fitted into the concave blade by interposing the sheet therebetween; a drive unit that causes the first and the second members to interpose, therebetween, the sheet to form a crease on the sheet; a sheet-information acquiring unit that acquires first sheet information of the sheet to be creased; an adjusting unit that adjusts a pressing force exerted by the drive unit; and a control unit that sets the pressing force to an optimum pressing force for the sheet and that causes the drive unit to drive the first and the second members for creasing the sheet at the optimum pressing force.

Abstract: A recording medium post-processing apparatus includes a recording medium stacking member; a first binding member that moves to an inside of a stacked area, binds the recording media by deforming the recording media, and moves to an outside of the stacked area after binding the recording media; and a guiding member disposed between the first binding member and the recording media and fixed to the first binding member, the guiding member guiding the recording media so that a gap between the recording media and the first binding member is maintained when the first binding member moves around the inside of the stacked area, wherein the guiding member has an opening that surrounds an area in which the first binding member operates to deform the recording media, and a part of the opening is narrowed in a moving direction of the first binding member.

Abstract: A creasing device for creasing sheets on a per-sheet basis, the creasing device includes: a first member extending perpendicularly to a sheet conveying direction and including a male blade, which has a convex cross section; a second member extending perpendicularly to the sheet conveying direction and including a grooved female blade, into which the male blade to be fitted with a sheet between the female blade and the male blade; and a drive unit that brings the first member and the second member relatively into and out of contact with each other to cause a sheet stopped at a predetermined position to be pinched between the first member and the second member and creased. An edge portion of any one of the first member and the second member has an arcuate shape.

Abstract: An image forming system includes: a folding unit that folds a sheet of paper to form a fold in the sheet; a creasing unit that, before the sheet is folded, produces a crease in the sheet at a fold position where the fold is to be formed; a crease-position adjusting unit that adjusts a crease position where the crease is to be produced; a fold-position adjusting unit that adjusts the fold position; a first input unit that receives an input specifying an amount, by which the crease position is to be adjusted; and a second input unit that receives an input specifying an amount, by which the fold position is to be adjusted, wherein when the fold position is adjusted by the second input unit, the crease position is also adjusted in synchronization with the adjustment of the fold position.

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 printing system which is capable of performing square back processing and preventing occurrence of a new trouble of inadvertently creating a saddle-stitched brochure defective in the appearance of a trimmed edge and/or print appearance, which is unexpected by an operator. A receiving unit receives a job of a first type for creating a saddle-stitched brochure subjected to square back processing and trimming processing or a second type creating a saddle-stitched brochure not subjected to the square back processing but subjected to the trimming processing. A controller controls a trimming position at an end of the sheet bundle for the job and/or an image printing position on a sheet included in the sheet bundle based on whether a job to be processed is of the first type or of the second type.

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: A sheet punching device includes a first blade, a first die into which the first blade is fitted from a first surface of a sheet to form a punch hole in the sheet, a second blade, and a second die into which the second blade is fitted. The second blade is inserted into the punch hole formed by the first blade from a second surface of the sheet and fitted into the second die.

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: According to one embodiment, a sheet finishing apparatus includes a finishing section configured to apply finishing to a sheet placed on a processing tray, a sheet discharging section configured to discharge the sheet subjected to the finishing to a stack tray via a discharge port, a roller attached to a shaft provided in parallel to the discharge port and which rotate in a first direction for guiding the sheet in the direction of the finishing section and a second direction for discharging the sheet, and an arm attached to the shaft to extend in the centrifuging direction from the shaft, rotate with the torque of the shaft, and idly rotate when force for regulating the torque acts. The arm flaps down the trailing end of the sheet on the stack tray onto the stack tray.

Abstract: A sheet collecting apparatus includes a sheet discharge outlet for sequentially carrying out a sheet, a sheet collecting device to load and store the sheet from the sheet discharge outlet, a stopper device for regulating a front end position of the sheet loaded on the sheet collecting device, a stopper driving device for shifting a position of the stopper device, and a carry-in guide member for guiding the sheet from the sheet discharge outlet onto an uppermost sheet collected on the sheet collecting device. The carry-in guide member includes a pivot point, a slide-contact guide surface that swings on the pivot point corresponding to a load amount of the sheet collecting device to guide a sheet front end fed from the sheet discharge outlet onto the uppermost sheet, and a sheet pressing portion continued to the slide-contact guide surface and pressing the uppermost sheet on the sheet collecting device.

Abstract: A sheet-processing device for performing various sheet post-processing functions at high speed and implementing a compact structure includes a compiler 106 that causes a stacked sheet to wait until stapling processing is performed; a jogger 107 that aligns the sheet stacked on the compiler 106; a stapler device 24 that performs the stapling processing to the sheet aligned by the jogger 107 as many as the setting number of sheets; and a sheet transfer pathway 105 through which the sheet in which an image is formed is delivered to the compiler 106.

Abstract: A stacking device includes a contact section with which top ends of the recording media in a conveying direction, conveyed into the storage space, make contact so stop the recording media at a storage position, a media move section which comprises a plurality of partition members, forms a plurality of spaces capable of storing the recording media between the partition members, stores the recording media stopped at the storage position into arbitrary one of the plurality of spaces, and moves the partition members thereby to move at least a part of the top ends of the recording media to a pushup position different from the storage position, and a lift section which pushes up, to the carry-out section, the recording media moved to the pushup position by the media move section.

Abstract: A creasing device includes a creasing unit that creases sheets on a one-by-one basis, which is conveyed to a folding device of a subsequent stage, a sheet detection unit that detects a position of a sheet delivered to the creasing device and a control unit that obtains reference information of a fold-position for the folding device and performs control of a stop position of the sheet according to reference information of the fold position, thereby adjusting a crease position.

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: A sheet cutting apparatus, including: a conveying member configured to convey a half-folded sheet bunch in a conveyance path in which the conveying member is provided; a registration member which comes into contact with a leading edge portion of the sheet bunch to correct a skew feed of the sheet bunch; a cutting member positioned upstream of the registration member to cut a trailing edge portion of the sheet bunch; and a discharging member provided at an outlet of the conveyance path to discharge the sheet bunch, wherein the leading edge portion of the sheet bunch is positioned outside the discharging member when, after the skew feed is corrected, the sheet bunch is conveyed downstream in the conveying direction by the conveying member and the trailing edge portion of the sheet bunch is conveyed to a cutting position of the cutting member to cut the trailing edge portion.

Abstract: To provide a post-processing system for enabling a sheet prepared in a different printing apparatus to be mixed and undergo post-processing when the post-processing apparatus performs bookbinding finish on sheets with images formed thereon, a collecting means is provided in a post-processing section for performing post-processing on image-formed sheets, and is configured to enable a bunch of sheets to be manually set from the outside, a control section is provided with operating means for outputting a set finish signal such that the sheets have been set manually in the collecting means, and it is configured when a mode selecting means selects a mixing post-processing mode, the control section performs the post-processing on a bunch of sheets by post-processing means using the set finish signal from the operating means.

Abstract: While a sheet on an intermediate processing tray is being processed, a plurality of sheets to be processed next are kept on standby by a standby portion arranged between the intermediate processing tray and a conveyance roller and a separation roller. When conveying the plurality of sheets that have been kept on standby in an overlapped state while successively shifting the sheets from each other in the sheet conveyance direction, the shift amount is successively reduced.

Abstract: A cutter device for removing the spine from packets of sheet materials to be enveloped by a mailing machine, including means for redirecting the packets across said cutter device while the packets remain superimposed with other sheet materials to be inserted into the same envelope while being moved along a support surface by a conveyor mechanism, and after cutting being recombined with said other sheet materials prior to being enveloped.