Abstract: A sheet processing apparatus may include a conveyance path and a tray. The conveyance path may convey sheets. The tray may receive the sheets conveyed from the conveyance path. The tray may include a stapler and a folding member. The stapler may staple the sheets. The folding member may fold the stapled sheets and may be provided upstream from the stapler relative to a sheet conveyance direction.

Abstract: The present invention provides a sheet processing apparatus, such as a finisher or sorter, for implementing predetermined processing such as alignment and stapling on an inserted sheet material (i.e. any sheet-form recording medium such as recording paper, transfer paper, or an OHP sheet), and an image forming apparatus comprising the sheet processing apparatus. The sheet processing apparatus comprises a rear end fence horizontal portion that contacts the end portion of the sheet member on the upstream side of a sheet member conveyance direction during alignment of the sheet member, a rear end fence vertical portion for supporting the other parts of the sheet member, and a staple unit for stapling the sheet member. The stapling direction in which a staple is punched by a stapler of the staple unit is set to be parallel to the rear end fence horizontal portion that contacts the rear end portion of the sheet member.

Abstract: A booklet-loading device includes: a carry-out unit that conveys plural of booklets sequentially; and a transfer unit that transfers the plural of booklets sequentially conveyed from the carry-out unit, and arranges the plural of booklets in a partly overlapped state; a loaded unit that is loaded with the booklets transferred by the transfer unit; and a transfer control unit that controls a transfer amount per booklet in the transfer unit to a transfer amount depending on a quantity of booklets loaded on the loaded unit.

Abstract: A sheet conveying apparatus is connected between an image forming apparatus and a post-processing apparatus to receive the sheet ejected from the image forming apparatus, and to eject the sheet to the post-processing apparatus. The sheet conveying apparatus receives, from the post-processing apparatus, a sheet reception line speed information showing a line speed for the post-processing apparatus to receive the sheet, and receives, from the image forming apparatus, a sheet ejection line speed information showing a line speed for the image forming apparatus to eject the sheet. A conveyance line speed control section controls the conveyance line speed at the time of receiving the sheet from the image forming apparatus based on a sheet ejection line speed information, and controls the conveyance line speed at the time of ejecting the sheet to the post-processing apparatus based on a sheet reception line speed information.

Abstract: A method and apparatus for high capacity stacking and stitching in an image production device is disclosed.

Abstract: A sheet post-processing apparatus includes a sheet stacking unit, an aligning unit, a moving member, a discharging member, and a discharging motor. The discharging motor drives the discharging member for discharging a pile of sheets in an operation pattern that is selected, depending on a predetermined condition, from among a plurality of operation patterns.

Abstract: A sheet processing apparatus including: a stapler; a conveying path, which conveys a sheet to the stapler; a bundle forming device to form a sheet bundle in the conveying path, the bundle forming device having a pinch device, which successively pinches an upstream end portion of the sheet to pinch plural sheets integrally; a control portion, which controls the stapler and the bundle forming device to staple the sheet bundle selectively between at one end of the sheet bundle for the side stitching and on the fold line of the sheet bundle for the saddle stitching; a discharging device, which discharges the sheet bundle stapled at the one end onto a stacking portion, a two-fold device, which folds the sheet bundle stapled on the fold line in two along the fold line, and a joining device, which joins the sheet bundle folded by the two-fold device into the discharging device.

Abstract: An apparatus is provided with a processing tray 42 to mount sheets ejected from an image formation section, aligning means (aligning plates 61, etc.) for aligning end portions of a sheet ejected on the processing tray 42, a post-processing apparatus 43 that performs binding processing on the sheets aligned by the aligning means, and moving means (unit moving motor 60, etc.) for moving the post-processing apparatus 43 to a plurality of post-processing positions set to perform the binding processing at different binding processing target position on the sheets, and moves the sheets to a post-processing undergoing position corresponding to the post-processing position substantially in parallel with a travel direction of the post-processing apparatus 43. It is thereby possible to perform the binding processing on the ejected sheets appropriately while implementing the apparatus compact in size.

Abstract: When a new paper sheet is supplied onto a compiling tray, a sub-paddle holds down paper sheets having already been stacked on the compiling tray until a leading edge of the new paper sheet S touches the stacked paper sheets. Thereafter, the sub-paddle gets apart from the sheets stacked on the compiling tray with timing, with which the rear edge of the new paper sheet falls on the compiling tray.

Abstract: A booklet finishing apparatus has a clamping unit that flattens a booklet of folded sheets by clamping at least on portion adjacent to a back of the booklet from both surfaces of the booklet, a forming unit that flattens the back of the booklet by pressing the back of the booklet, and a switching unit that has a plurality of modes to control the forming unit and switches between the plurality of modes.

Abstract: This is a stacker/stitcher assembly having two disc stackers facing each other. In between the stackers is a common collection tray for receiving the stacked substrates. The assembly can handle printed output of up to 360 ppm. A bypass is provided to divert printed substrates to an exit tray or another finishing station including disc stackers.

Abstract: A postprocessing apparatus includes: a housing to which a recording sheet is fed from a predetermined upstream device; a first postprocessing mechanism mounted in the housing and adapted for performing a predetermined first postprocessing to the recording sheet; a second postprocessing mechanism selectively mountable in the housing, and is provided with a predetermined driver, the second postprocessing mechanism being adapted for performing a predetermined second postprocessing to the recording sheet; a conveyance passage provided in the first postprocessing mechanism and adapted for conveying the recording sheet to the second postprocessing mechanism when the second postprocessing mechanism is mounted in the housing; and a conveying member provided in the conveyance passage and adapted for conveying the recording sheet. The conveying member is driven by a transmission of a driving force from the driver of the second postprocessing mechanism.

Abstract: A post-processing apparatus includes a compile tray that contains a recording sheet and has a sheet end position determination portion contacting with and determine a position of an end edge of the contained recording sheet, a first sheet end alignment member that carries the recording sheet to the sheet end position determination portion and aligns the end edge, a second sheet end alignment member that moves between the sheet carrying position and a standby position, wherein the sheet carrying position is where the second sheet end alignment member contacts with the recording sheet to carry the recording sheet to a side of the first sheet end alignment member, and the standby position is separated from the recording sheet, and a second sheet end alignment member control unit that moves the second sheet end alignment member between the sheet carrying position and the standby position and changes a carrying position sustaining time to sustain the second end alignment member at the sheet carrying position accor

Abstract: A recording section includes a recording head operable to record information on a first medium and a second medium. A first stacker has a first face and a second face, and is movable between a first position and a second position. A stacker position changer is operable to move the first stacker placed in the first position in a first direction, and then to move a second direction orthogonal to the first direction, thereby placing the first stacker in the second position. The first face is adapted to receive the first medium conveyed from the recoding section in the first direction, when the first stacker is placed in the first position. The second face is adapted to guide the first medium and the second medium conveyed to the recording section in a third direction opposite to the first direction, and to receive the first medium and the second medium conveyed from the recording section in the first direction, when the first stacker is placed in the second position.

Abstract: A sheet processing device includes a pair of gripping rollers which can grip and convey a sheet bundle in a booklet-like form, a pressing roller which presses and flattens the folded back portion of the sheet bundle gripped by the gripping rollers, and a control unit which performs rotation control on the pair of gripping rollers. The control unit controls the gripping rollers so as to stop when the folded back portion of the sheet bundle protrudes from the rollers by a predetermined amount. The pressing roller flattens down the protruding folded back portion when the gripping rollers are stopped by the control unit and is in the state of gripping the sheet bundle.

Abstract: A sheet processing apparatus which can be reduced in size and suppress cost increase by preventing sheet buckling and jamming. Sheets stacked on an insert tray of a sheet processing apparatus are fed on a conveying path in a first sheet feed mode in which sheets are fed after being inverted by an inversion path or a second sheet feed mode in which sheets are fed without passing through the inversion path. A pair of conveying rollers conveys the fed sheets and the sheets with images formed thereon. The conveyed sheets are stacked on a processing tray, and a stapler performs predetermined processing on the stacked sheets. It is determined whether predetermined information is included in sheet information about the sheets stacked on the insert tray, and if the predetermined information is included in the set sheet information, a predetermined message is displayed on a display panel.

Abstract: The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper.

Abstract: The sheet processing apparatus has a stapling unit which staples a sheet bundle by clinching the sheet bundle, of which sheets sequentially enters an opening between a first stapling part and a second stapling part and are then stacked, and a controller which controls the stapling parts. When executing a stapling process of the sheet bundle, an opening distance between the stapling parts before starting a stapling operation becomes narrower than an opening distance set till the last sheet of the sheet bundle enters (approaches) between the stapling parts. This contrivance enables reduction of the time required for the stapling process of the sheet bundle and an improvement of the productivity irrespective of the number of points for the stapling process without scaling up the apparatus, causing any complicated configuration of the apparatus and increasing the costs.

Abstract: Bookbinding apparatus facilitating, in the event it is halted during operation, the removal of any sheave left remaining inside, to eliminate the risk of sheets scattering. A sheet bundler/stacker bundles printed sheets into sheaves. Along a binding process path are provided a sheave transporter for transporting the sheaves and, at the downstream end of the bundler/stacker, an adhesive applicator in an adhesive-application position and a front-cover binder in a front-cover binding position. A sheave exiting-conveyor conveys sheaves from the front-cover binder into a storage stacker. A sheet-position recognizer detects/monitors the position of a sheave in the binding process path. If the bookbinding operations are interrupted, the position of any sheave left in the binding process path is determined by the sheet-position recognizer, and when the apparatus is restarted the order of the binding processes is altered depending on the position in which the sheave is left behind.

Abstract: An image forming apparatus which enables the user to easily remove a sheet bundle left in the apparatus after a bookbinding-mode job is stopped in the middle of execution thereof. In a bookbinding mode of the apparatus, in a sheet stacking section, a plurality of sheets having images formed thereon are stacked as a sheet bundle; in a gluing section, glue is applied to an end face of the sheet bundle; and in a bonding section, a cover sheet is bonded to the sheet bundle to wrap the sheet bundle in the cover sheet. When a bookbinding-mode job is canceled during execution thereof, in the gluing section, glue is applied to the sheet bundle stacked in the stacking section before the job is stopped, and a discharge section discharges the glue-applied sheet bundle which is neither wrapped nor trimmed.

Abstract: A sheet post-processing apparatus includes a processing tray and a stapler. The processing tray has a mounting area, a flexible portion, and an edge holding part. A sheaf of sheets is made on the processing tray. A sheet P to be stapled is stacked on the mounting area. The flexible portion is formed integrally with the mounting area and at the same level as the upper surface of the mounting area, along the edge of the mounting area of the side to staple the sheaf of sheets, and is bent easier than the mounting area in the direction of the thickness of the sheaf of sheets toward the mounting area. The stapler has a fixed part and an arm, and staples a sheaf of sheets. The fixed part is provided deviated from the upper surface of the mounting area to the mounting unit.

Abstract: Provided is a sheet processing apparatus for processing sheets, including: a sheet process tray on which sheets to be processed are stacked; a sheet transport means for transporting processed sheets on the sheet process tray; a pressure member which is provided on an upstream side of the sheet transport means with respect to a sheet transport direction and which moves in the sheet transport direction while pressing the processed sheets, for transporting the processed sheets in cooperation with the sheet transport unit; and a controller for selectively operating the pressure member.

Abstract: A sheet processing apparatus includes: a buffer unit which stores plural supplied sheets with upstream edges in a conveying direction thereof aligned; a processing tray on which sheets discharged from the buffer unit are stacked; and an oscillation roller pair and a return roller which convey the sheet stacked on the processing tray to bring the sheet into abutment against a stopper for receiving the upstream edge of the sheet. The buffer unit is adapted to align the upstream edges of only sheets to be stored before a sheet to be supplied last among the sheets to be stored.

Abstract: An image forming apparatus according to the present invention includes a printer, a stapler, a stacking tray, a driving mechanism, a detecting unit, a storage unit, and a controller. The printer prints image data on a sheet. The stapler staples a sheet bundle including the sheet. The stacking tray receives the sheet bundle at a standby position. The driving mechanism lifts and lowers the stacking tray. The detecting unit detects an upper surface of the sheet bundle on the stacking tray. The storage unit stores number of sheet bundles on the stacking tray. The controller controls the driving mechanism to increase a distance from the detecting unit to the stacking tray at the standby position according to an increase in the number stored in the storage unit.

Abstract: The present invention is generally directed to an apparatus and method for attaching a cover to an assembly of plural sheets. Exemplary embodiments include first and second clamping components displaceable relative to one another, wherein the first and second clamping components define a first dimension of a sheet receiving volume, and wherein a second dimension of the sheet receiving volume is defined by a sheet stop and a first plane that is orthogonal to the first and second clamping components; and a roller drive for displacing a first roller along the first plane and exerting a force perpendicular to the first plane in a direction toward the sheet receiving volume.

Abstract: Provided is a post-processing apparatus which sequentially receives sheets one by one from an image forming apparatus to execute a post-processing on the sheets, including: a first transport device which receives the sheets delivered from the image forming apparatus and transports the sheets; a sheet overlap device which stays the sheets transported by the first transport device and causes another sheet transported sequentially by the first transport device to overlap at least one stayed sheet; a second transport device which transports a plurality of sheets overlapping each other by the sheet overlap device; a plurality of stacking devices capable of stacking a plurality of sheets transported by the second transport device; and a controller which changes control of sheet overlapping caused by the sheet overlap device depending on which stacking device selected from among the plurality of stacking devices the sheets are to be transported to.

Abstract: A sheet alignment apparatus includes a feeding section, stopper, stacking tray, support portion, and first and second press portions. The first press portion presses the portion in the vicinity of the downstream side edge of a sheet bundle composed of the sheets that have been stacked on the stacking tray to a level higher than a first predetermined height against the support portion. The second press portion presses the portion in the vicinity of the downstream side edge of a sheet bundle composed of the sheets that have been stacked on the stacking tray to a level higher than a second predetermined height that is higher than the first predetermined height against the support portion.

Abstract: A size storing unit stores a size of a ring member for binding stacked sheets. A range determining unit determines whether a thickness represented by input thickness information is larger than a minimum total thickness of sheets allowed to be bound with a ring member having the stored size and equal to or smaller than a maximum total thickness of sheets that can be bound with the ring member. When it is determined that the thickness represented by the thickness information is equal to or smaller than the minimum total thickness or larger than the maximum total thickness, a setting unit sets the size stored in the size storing unit to a different size.

Abstract: A stitcher system includes a stitcher mechanism for stitching collations of documents and adapted to form stitches from a conductive wire moved into the stitcher mechanism. A non-conductive spool is mounted for rotation on a spindle. A conductive wire is wound on the non-conductive spool. The conductive wire has a tail end adjacent to the non-conductive spool and a lead end remote from the spool. The spool rotates when the conductive wire is moved into the stitcher mechanism to provide conductive wire to be used by the stitcher mechanism to form stitches. A sensing circuit is provided with a circuit path that includes the conductive wire wrapped on the non-conductive spool and a conductive member mounted to engage the wire. The sensing circuit path becomes open when the conductive wire is not wrapped on the non-conductive spool to thereby detect an out of wire condition.

Abstract: Inserter provided with an envelope feeder having an envelope supply holder for taking up a stack of envelopes and having a transport roller and a separation element opposite a circumferential portion of the transport roller, for separately dispensing individual envelopes from the envelope supply holder. An envelope transport path extends from the envelope feeder to a stuffing position for transporting envelopes from the envelope feeder to the stuffing position. At least one guide along the envelope transport path downstream of the separation element comprises a flap hold-open element for holding a flap of an envelope held in the stuffing position open, situated opposite a circumferential portion of the transport roller of the envelope feeder.

Abstract: Various embodiments and methods relating to a booklet maker are disclosed.

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 image forming apparatus which enables the user to easily remove a sheet bundle left in the apparatus after a bookbinding-mode job is stopped in the middle of execution thereof. In a bookbinding mode of the apparatus, in a sheet stacking section, a plurality of sheets having images formed thereon are stacked as a sheet bundle; in a gluing section, glue is applied to an end face of the sheet bundle; and in a bonding section, a cover sheet is bonded to the sheet bundle to wrap the sheet bundle in the cover sheet. When a bookbinding-mode job is canceled during execution thereof, in the gluing section, glue is applied to the sheet bundle stacked in the stacking section before the job is stopped, and a discharge section discharges the glue-applied sheet bundle which is neither wrapped nor trimmed.

Abstract: A book-binding apparatus in which adhesive is used for binding a book includes a tank to store an adhesive which is heat-melted, a heater to heat the tank, a first temperature sensor mounted in the tank, a first controller to control the temperature based on a temperature detected by the first temperature sensor, wherein the first controller controls the heater so as to make the temperature of the adhesive in the tank to be a predetermined temperature, a second temperature sensor mounted adjacent to a top level of a melted adhesive, an adhesive transporting section to transport the adhesive to the tank, and a second temperature controller to control the adhesive transporting section to transport the adhesive to the tank based on a shape of a book, when the temperature detected by the second temperature sensor is equal to or lower than a set temperature.

Abstract: There is provided a technique which can realize stable loading performance irrespective of the state of a loaded object loaded on a tray. A loading information acquisition unit 106 acquires loading information relating to a sheet loading height on a loading tray 101 on which a sheet subjected to a specified processing is loaded, and a press force adjusting unit 107 moves, based on the loading information, at least one of the loading tray 101 and a pressing unit 104 to press from above the sheet loaded on the loading tray in a direction in which the loading tray and the pressing unit 104 are distanced from each other.

Abstract: A sheet-handling device comprising an intermediate conveyer passage, an intermediate tray, introduction rollers, conveying rollers and a controller. The controller rotates the introduction rollers and the conveying rollers forward and reverse so as to convey two pieces of sheets successively introduced into the intermediate conveyer passage until their trailing ends separate away from the introduction rollers. The conveying rollers are halted in a state where the leading ends are nipped. After the leading ends of the two pieces of sheets have been nipped in an overlapped manner by the conveying rollers, the conveying rollers are rotated forward to convey the two pieces of overlapped sheets into the intermediate tray.

Abstract: Disclosed is a sheet finisher including: a push-in member to push a sheet bundle; a pair of rollers to fold the sheet bundle pushed-in by the push-in member; a movement member to move at least one roller of the pair of rollers; an acquiring member to acquire information of a thickness of the sheet bundle; and a control member to control the movement member so as to adjust a clearance between the pair of rollers, based on the information of the thickness of the sheet bundle acquired by the acquiring member.

Abstract: When a job cancellation instruction has been specified, if the number of the recording sheets loaded on the stacker device of a post-processing apparatus is not greater than the predetermined number of sheets, the aforementioned recording sheets are ejected without being subjected to the process of stapling and if it is greater than the predetermined number of sheets, the recording sheets having been stapled are ejected.

Abstract: A sheet post-processing apparatus (1) includes a punching unit (P), an end-binding unit (S) which aligns end portions of a sheet bundle piled on a processing tray (2) and performs a stapling process, and a middle-binding and middle-folding unit (C) which performs a stapling process on the center of the sheet bundle and then folds centering around the stapling portion to be in a brochure form. The middle-binding and middle-folding unit (C) is independently provided on the lower side of the end-binding unit (S) and a middle-binding and middle-folding feeding path (27) feeds sheets to the middle-binding and middle-folding unit (C) without via the processing tray (2) of the end-binding unit (S).

Abstract: Above a processing tray, a standby tray for making sheets of paper P stand by is installed. The sheets of paper P on the standby tray are dropped, fed, and moved to the processing tray, thus the conveying path from the standby tray to the processing tray is shortened. Furthermore, a Z-folding mechanism is arranged above the standby tray, and the sheets of paper P folded in a Z shape are dropped, and are mixed and stapled on the standby tray or processing tray, and even when performing a plurality of post processes for sheets, miniaturization of a sheet post-process system is retained.

Abstract: A sheet bending apparatus bends a sheet in a standing state. The apparatus includes: an information obtaining section that obtains a sheet information indicating the type of the sheet; a sheet moving member that has an abutting section capable of abutting the bottom edge of the sheet and vertically moves the sheet with the abutting section; a sheet bending section that is disposed within a range of the movement of the sheet moved by the sheet moving member, has a pushing member extending laterally and intersecting the vertical direction of the sheet, and bends the sheet by causing the pushing member to push a predetermined position of the sheet; and a controlling section that controls an amount of movement of the abutting section according to the type of the sheet to allow the abutting section to abut the predetermined position of the sheet.

Abstract: An eject mechanism with a grip in a finisher is disclosed, in which papers ejected from a digital output device are temporarily stacked on a paper eject tray and exactly aligned so that the papers are gripped to move to a stacker tray without scattering. The eject mechanism with a grip in a finisher includes a paper eject tray that temporarily receives papers ejected from a digital output device, a paper moving means gripping the papers received in the paper eject tray to move them, and a stacker tray stacking the papers moved from the paper moving means, wherein the paper moving means includes a guide side plate provided with a rail groove circulating along the papers and a curved cam disposed near the rail groove, a paper grip means driven to grip the papers received in the paper eject tray when it is in contact with the curved cam while moving along the rail groove of the guide side plate, and a driving means that drives the paper grip means to circulate it along the rail groove.

Abstract: A device and method for assisting a user to clear a media jam in a printing device that announces pages, picks media responsively to the announced pages and images the picked media using a media transport path, that: detects a media jam at a given location along the media transport path; halts printing device components upstream from the given location in the media path while continuing to image picked media downstream from the given location in the media transport path; and, prompts the user to clear the detected media jam from the given location after all downstream media has been imaged.

Abstract: A post-processing unit of an image forming apparatus includes a vertical conveying path and a horizontal conveying path. A stapling mechanism and a folding mechanism are arranged in the horizontal conveying path. When saddle processing is carried out, paper sheets sent into the horizontal conveying path are struck against a trailing end stopper and, after the number of sheets to be bound is accumulated, the center of the paper sheets is stapled and folded double. A movable tray projected to the outside of a housing is provided at a terminal end of the horizontal conveying path. The movable tray functions as a tray for discharging paper sheets that pass through a saddle stitcher and also functions as a supporting member that supports a leading end side of the paper sheets at the time of the saddle processing.

Abstract: When a new paper sheet is supplied onto a compiling tray, a sub-paddle holds down paper sheets having already been stacked on the compiling tray until a leading edge of the new paper sheet S touches the stacked paper sheets. Thereafter, the sub-paddle gets apart from the sheets stacked on the compiling tray with timing, with which the rear edge of the new paper sheet falls on the compiling tray.

Abstract: The present invention provides a sheet processing apparatus comprising a sheet holding device capable of storing supplied sheets, a first sheet stacking tray on which sheets are stacked at a downstream side of the sheet holding device in a sheet conveying direction and on which the sheets are subjected to processing, a sheet discharging device for discharging the sheets stacked on the first sheet stacking tray, a second sheet stacking tray on which the sheets discharged by the sheet discharging device are stacked, and a controller for controlling the sheet discharging device and the sheet holding device if sheet jam occurs at an upstream side of the sheet holding device, in such a manner that, after the sheets on the first sheet stacking tray are discharged onto the second sheet stacking tray, the sheets stored in the sheet holding device are discharged onto the first sheet stacking tray.

Abstract: When the rear end of a sheet bundle S is brought to reach the clamping portion between a rocking roller and a rear end aligning wall by conveyance means, the individual timings, at which the rocking roller and the rear end aligning wall move to the escape position, are controlled to drop said sheet bundle S onto a stack tray, and then the rear end aligning wall is moved from the escape position to the support position thereby to register the rear end of the sheet bundle S dropped on the stack tray.

Abstract: A sheet processing apparatus includes a stack tray, a stapler, a stapler moving device, and an aligning member. When a stapling process is performed at least two staple positions of the sheet bundle stacked on the stack tray using the stapler, the stapler is moved to the next staple position by relative movement in which the stapler and the sheet bundle are moved in the opposite directions by the stapler moving device and the aligning member respectively. When the number of sheets in the sheet bundle or a weight of the sheet bundle is lower than a predetermined value, a moving speed of the sheet bundle is set faster than a moving speed of the sheet bundle at which the number of sheets in the sheet bundle is not lower than the predetermined value or the weight of the sheet bundle is not lower than the predetermined value.

Abstract: There is provided a sheet conveying apparatus which is capable of easily distinguishing between a sheet bundle containing abnormal sheets, such as multi-fed sheets, and a normal sheet bundle. When it is determined that there is no abnormality in the conveyance of sheets to a processing tray (630), a finisher control section (501) causes a bundle of sheets stacked on the processing tray (630) to be discharged onto a stack tray (700), whereas when it is determined that there is abnormality in the conveyance of sheets to the processing tray (630), the finisher control section (501) causes the bundle of the sheets stacked on the processing tray (630) to be discharged onto a sample tray (701).

Abstract: The sheet processing apparatus has a stapling unit which staples a sheet bundle by clinching the sheet bundle, of which sheets sequentially enters an opening between a first stapling part and a second stapling part and are then stacked, and a controller which controls the stapling parts. When executing a stapling process of the sheet bundle, an opening distance between the stapling parts before starting a stapling operation becomes narrower than an opening distance set till the last sheet of the sheet bundle enters (approaches) between the stapling parts. This contrivance enables reduction of the time required for the stapling process of the sheet bundle and an improvement of the productivity irrespective of the number of points for the stapling process without scaling up the apparatus, causing any complicated configuration of the apparatus and increasing the costs.