JP3608100B2 - Bookbinding equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bookbinding apparatus that sequentially transfers printed continuous sheets or unit sheets obtained from page unit sheets, collates them in a buffer unit for each collating unit, and then binds them to a booklet with staples or the like. . For example, the continuous paper is provided with a margin cut perforation extending in the longitudinal direction along the vicinity of both sides and a plurality of cutting perforations extending in the width direction at regular intervals, and is separated by each perforation. Item fields are pre-printed in the section to be unit paper, and predetermined items are individually printed on each item field by a page printer (not shown), and this continuous paper is a unit of one sheet to be a cover sheet A sheet and a plurality of unit sheets to be collated with the unit sheet are sequentially arranged so as to form one collation unit to be collated. Further, the page unit paper is formed so as to divide one page into a plurality of sections and form one collating unit.
[0002]
[Prior art]
A conventional bookbinding apparatus, for example, arranges continuous paper folded in a bellows shape at each perforation extending in the width direction, and supplies it to each processing unit by sequentially drawing from the top, and the continuous paper pulled out After cutting off the margin with the perforation for cutting, the continuous paper is cut with the cut perforation and cut into unit paper, and the unit paper is transferred in order, reversed and collated for each unit, with staples etc. There is a binding unit that includes a binding unit that binds and a stacker unit that takes out a book that has been bound and stocks in a set order.
[0003]
[Problems to be solved by the invention]
In the above conventional example, since the reversing mechanism is complicated and large, not only the unit has to be enlarged and the installation space has to be widened, but also has only a bookbinding function. There was an inconvenience that it was not possible to process just to cut. Therefore, the applicant first supplies as a bookbinding apparatus a continuous sheet in which unit sheets to be collated are connected or a page unit sheet in which a plurality of unit sheets constituting one collating unit to be collated are connected. Supply unit, a cutting unit that cuts continuous paper or page unit paper supplied from this supply unit into unit paper, and each unit paper transported from this cutting unit is sequentially fed downward to collate A bookbinding apparatus has been proposed that includes a buffer unit that collates for each unit, a binding unit that binds the collated unit sheets, and a stacker unit that stocks the bound booklet. An object of the present invention is to provide a bookbinding apparatus capable of efficiently binding two places on one side of a unit sheet to be collated.
[0004]
[Means for Solving the Problems]
Since even present invention was made in view of the above problems, page unit comprising a unit sheet forming a collation unit to be continuous paper or collation unit sheet to be collated, which are connected is plural articulated A feeding unit that supplies paper, a cutting unit that cuts continuous paper or page unit paper supplied from the feeding unit into unit paper, and each unit paper transported from the cutting unit is sequentially transferred downward. The bookbinding apparatus includes a buffer unit that collates each collation unit, a binding unit that binds the collated unit sheets, and a stacker unit that stocks the bound booklet. A first stitcher that binds a binding position on the upstream side in the transport direction in one side portion along the transport direction of the collated unit paper, and a second stitcher that binds a binding position on the downstream side in the transport direction in the side portion. Preparation The two stitcher are aligned along the transfer direction of the unit sheet, said first stitcher is arranged in the transport direction upstream side, the second stitcher is being arranged in the transport direction downstream side, and, on the binding portion A conveying unit comprising a first aligning unit that aligns the side on the downstream side in the transport direction of the united paper and a second aligning unit that aligns the side on the upstream side in the transporting direction. Transports the unit paper constrained by the first and second aligning units based on at least the transport amount calculated from the dimension of the unit paper in the transport direction, and determines the binding position of the constrained unit paper. A bookbinding apparatus having a configuration in which the first and second stitchers are aligned is provided to solve the above problems.
[0005]
In the present invention, the conveying means includes a plurality of belts, the pair of belts in the plurality of belts is provided with the first aligning portion, and the first aligning portion is collated. Further, in order to align the downstream side of the unit paper in the transport direction, the belt is raised in a fin shape from the belt, and the second aligning portion is paired with a pair of belts other than the belt provided with the first aligning portion. It is preferable that the second aligning portion is raised from the belt in a fin shape so as to align the upstream side of the collated unit sheet in the transport direction .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment in which the bookbinding apparatus is applied to one that processes page unit paper will be described with reference to the accompanying drawings. Here, FIG. 1 of the attached drawings is a schematic overall view of the bookbinding apparatus, FIG. 2 is a plan view of a page unit paper, FIG. 3 is an enlarged view showing a buffer unit, and FIG. 4 is an enlarged paper view of a supply unit and a slitter. 5 is a circuit connection diagram of each part, and FIG. 6 is a flowchart of the operation.
[0007]
As shown in FIG. 1, a bookbinding apparatus 1 is provided with a supply unit 3 on which page unit sheets 2 are stacked and picked up from the uppermost one and supplied to the next process (slitter 4), and a pickup A cutting unit 5 for cutting the page unit sheet 2 into unit sheets 2a and 2b, a buffer unit 6 for collating each unit sheet 2a and 2b transferred and carried from the cutting unit 5, and a collated unit It comprises a binding section 7 for binding sheets, a stacker section 8 for stocking a book that has been bound together, and a base 9 that supports each member and is movable by a caster. Reference numeral 4 is used when cutting with a slitter in a direction parallel to the paper transport direction, and is also used for cutting a marginal portion of continuous paper. Reference numeral 10 denotes a marginal box for storing a marginal part.
[0008]
As shown in FIG. 2, the page unit sheet 2 is divided by a plurality of cutting perforations 11 extending in the width direction at regular intervals, and a matter column 12 is provided in a section that becomes a plurality of unit sheets 2a and 2b. Is pre-printed. A predetermined item 13 is printed in each item column 12 by a page printer (not shown), and each unit sheet 2a, 2b includes a unit sheet 2a to be a cover sheet with a cover mark 14 and a unit sheet 2a. A predetermined number of sheets following, for example, four unit sheets 2b are continuously arranged so as to become one collating unit.
[0009]
As shown in FIG. 1, a first mark for reading the cover mark 14 of the unit sheet 2a serving as a cover is provided between the slitter 4 and the cutting section 5 which are the subsequent stage positions of the supply unit 3 in the transfer path of the page unit sheet 2. A reading unit 15 is provided, and a second mark reading unit 16 that reads the cover mark 14 is provided between the binding unit 7 and the stacker unit 8 that are the subsequent stages in the transfer path. When the cover mark 14 is detected by the first mark reading unit 15, each processing operation of the cutting unit 5, the buffer unit 6, and the binding unit 7 and the transfer of each unit are continued, and the page unit from the supply unit 3 is continued. When the supply of the sheet 2 is stopped and the cover mark 14 is detected by the second mark reading unit 16, the stacker unit 8 is started and the supply of the page unit sheet 2 is resumed.
[0010]
As shown in FIGS. 1 and 4, the supply unit 3 includes a lifter 17 that can be moved up and down to place the page unit papers 2 in a stacked state, and pulls the page unit papers 2 from the top to supply them to the cutting unit 5. The pickup roller 18 which is a driving wheel for pulling out the page unit paper 2 from above, the feed roller 19 for moving the page unit paper 2 horizontally in conjunction with the pickup roller 18, and both rollers 18, 19 The pick-up device 23 includes a pick-up device 23 including an arm 22 for enabling rotational displacement of the roller receiver 20 around the rotation shaft 21. For example, the pick-up device 23 is in a state where two sheets are overlapped as necessary. When the supply of the page unit paper 2 is improper, such as when the paper is fed at a time or when a paper jam occurs, the roller receiver 20 is manually rotated. 3 is rotationally displaced about the (see the one-dot chain lines in FIG. 4), it is possible to remove the page unit sheet 2 such as a paper jam.
[0011]
As shown in FIGS. 1 and 4, the slitter 4 is disposed so as to be paired with the lower support roller in the vertical direction, and is a unit for removing a margin to process a separate continuous sheet having a margin. It is configured to cut a perforation for cutting that extends parallel to the paper transport direction. In addition, the slitter 4 is displaced obliquely upward when processing, for example, a continuous sheet having no margin or a page unit sheet 2 having no perforation for cutting parallel to the transport walk. It is supported by a rotatable displacement member 24 so as not to contact the unit paper 2.
[0012]
As clearly shown in FIG. 1, the cutting unit 5 includes a low-speed roller 25 and a high-speed roller 26 for cutting the page unit paper 2 with a cutting perforation 12 according to a speed difference, and a blade 27 for assisting the cutting. Is provided.
[0013]
As clearly shown in FIGS. 1 and 3, the buffer section 6 has a stopper 28 that is displaced in a closed state in which the unit sheets 2a and 2b are stopped and in an open state in which the unit sheets 2a and 2b are allowed to pass through. , 2b is closed until one collation unit is completed, and when the collation is completed, the booklet mode in which the unit paper 2a, 2b in one collation unit is opened to be transferred to the binding unit 7 and the stopper 28 is in an open state. A gate 29 that can be switched to a cutting mode that remains, and a lower surface of the unit paper 2a, 2b that is placed in front of the gate 29 so that the unit paper 2a, 2b rides downwardly in the traveling direction. The first and second support rollers 30 and 31, which are rotationally driven paper support members, that block the transport path, that is, the leading edge of the subsequent unit paper 2b abuts the lower surface. Comprising a unit sheet 2a which arrangement is carried above the second support roller 31, a pressing roller 32 that no As can hold from above 2b. The presser roller 32 presses the unit papers 2a and 2b carried in from above, and rotates the first and second support rollers 30 and 31 so that the tips of the unit papers 2a and 2b abut against the stoppers 28 to align them. It is for assisting. The gate 29 is fixed to the stopper 28 bent in a substantially L shape and one end of the stopper 28, and is supported by a rotary shaft 34 having an arm 33 so as to be capable of rotational displacement. In FIG. The support member 36 urged clockwise by 35, the cylinder 37 that pushes the arm 33 to rotate counterclockwise, and the arm 33 from the opposite side of the cylinder 37 via the mode fixing member 38. It comprises a cylinder 39 that pushes out to rotate around.
[0014]
As shown in FIG. 3, in the booklet mode, the above-described buffer unit 6 maintains the state in which the cylinder 39 is retracted, and when the cylinder 37 protrudes (shown state), the stopper 28 causes the arm 33 and the support member 36 to move. The gate 29 is in a closed state (solid line state in FIG. 3) by rotating counterclockwise around the rotating shaft 34, and when the cylinder 37 is retracted, the stopper 28 causes the rotating shaft 34 to be moved in the same manner as described above. The gate 29 is shifted to the center in the clockwise direction to enter the passing mode (the one-dot chain line state in FIG. 3). In the passing mode, the unit sheets 2 a and 2 b are sent directly to the stacker unit 8 through the binding unit 7. In the figure, reference numeral 40 denotes an upper restricting member provided so that the unit sheets 2a and 2b do not protrude upward, and reference numeral 41 indicates a lower restricting member provided so that the unit sheets 2a and 2b do not protrude downward. Reference numeral 42 denotes a feed roller for guiding the unit sheets 2a and 2b one by one so as to be transferred to the buffer unit 6 through a normal transfer path, and reference numeral 43 denotes a normal transfer of the unit sheets 2a and 2b in the collated state. It is a feed roller that guides the sheet to be transferred to the binding unit 7 along the path.
[0015]
In the booklet mode (the state where the stocker 28 is raised), the buffer unit 6 configured as described above is configured such that when the unit paper 2a serving as a cover is first carried through the feed roller 42, the first and second paper support rollers 30 are provided. , 31 and stops when the tip hits the stopper 28. The unit sheet 2a in the stopped state is in an inclined state in which the rear end side is positioned upward, and its lower surface is positioned on the carry-in path and is exposed obliquely with respect to the leading end of the subsequent unit sheet 2b. ing. Subsequently, when the succeeding unit sheet 2b is carried in, it obliquely collides with the lower surface of the preceding unit sheet 2a and enters between the lower surface and the first support roller 30 and the second roller 31 which are sheet supporting members. The unit paper 2b which continues in this way also enters the lower side of the unit paper 2b, and when the set number of sheets is reached and the unit papers 2a and 2b of one collating unit are overlaid and collation is completed, the cylinder 37 is retracted. The stopper 28 is rotated and displaced clockwise by the tension spring 35, and the unit sheets 2a and 2b of one collation unit are transferred to the binding section 7.
[0016]
As shown in FIG. 1, the binding unit 7 includes a plurality of belts that support unit sheets 2 a and 2 b of one collation unit in a state where the unit sheets 2 a serving as a cover are on the upper side and overlap each other. 44, and the first stitcher 45a and the second stitcher 45b that bind the unit sheets 2a and 2b that have been collated at two binding positions on one side along the transfer direction.
[0017]
As shown in FIG. 1, the stacker section 8 includes a conveyor 46, constituting from this conveyor 4 the outer ends of 6 (on the drawing, the right end) inclined stopper 47. provided on. Then, the booklet discharged from the binding unit 7 to the conveyor 46 is transported through the conveyor 46 from the left end to the right end of the drawing, and stands diagonally with the inclined stopper 47 being inclined. The booklet is stocked by repeating the operation of standing diagonally in a state where it is applied.
[0018]
As shown in FIG. 5, the bookbinding apparatus 1 is configured to control the operation of each unit by a control unit 48. In the drawing, reference numeral 49 denotes an operation unit in which various operation keys are arranged on a keyboard (not shown), reference numeral 50 denotes a storage unit for storing the number of finished booklets, and reference numeral 51 denotes the bookbinding apparatus 1. It is a display unit that displays the driving state, the number of finished booklets, and the like.
[0019]
Next, the operation of the booklet mode of the bookbinding apparatus 1 will be described with reference to FIG. The operator operates the keys of the operation unit 49 to input settings such as the number of booklets set, mode settings (including the booklet mode in this case), etc., while the slitter 4 is displaced obliquely upward by rotating the displacement member 24. When the input is made so as not to contact the page unit paper 2 and the start key is turned on, the supply unit 3, the cutting unit 5, the buffer unit 6 and the binding unit 7 are driven (step 101). Are sent to the cutting unit 5 and cut, and the unit paper 2a as the cover of the booklet and the unit paper 2b after the second page are transported in the order in which they are arranged in series, and are sequentially transferred downward. Overlaid and collated. At this time, after the unit sheets 2a and 2b of one collating unit are sent out from the supply unit 3, the unit sheet 2a that becomes the next cover section divided at the advancing end of the page unit sheet 2 is positioned at the front side of the cutting unit 5 When it reaches, the first mark reading unit 15 detects the cover mark 14 (step 102), and the supply unit 3 supplies the page unit paper 2 while the cutting unit 5, the buffer unit 6, and the binding unit 7 are in a driving state. Is stopped (step 103).
[0020]
Then, the collated unit sheets 2a and 2b are bound by the binding unit 7 and sent out as a booklet, and the second mark reading unit 16 detects the cover mark 14 attached to the uppermost unit sheet 2a of the booklet. When this is done (step 104), the supply unit 3 is re-driven to supply a new page unit sheet 2 to the cutting unit 5, while the booklet is discharged to the stacker unit 8 (step 105). In this stacker unit 8, the booklet is transported on the conveyor 46 from the left end to the right end in FIG. 1, and stands diagonally with the inclined stopper 47 being inclined, and the subsequent booklet is inclined with the inclined surface of the booklet. The booklet is stocked by repeating the action of standing up.
[0021]
When the booklet is created in this way and the stack amount has not reached the set number, the process returns to step 101 to drive the supply unit 3, the cutting unit 5, the buffer unit 6, and the binding unit 7, and the above-described operation is performed. On the other hand, when the booklet reaches the set number, a stop signal is output (step 106), and the bookbinding apparatus 1 stops. On the other hand, the set number of booklets stocked by leaning on the inclined stopper 47 are transported by a transport vehicle or the like, and when creating a booklet, the start key is turned on and the same operation as described above is continued.
[0022]
When the operator switches the setting mode to the cutting mode and inputs it, and turns on the start key, the buffer unit 6 retracts the cylinder 37 and the cylinder 39 protrudes to push the arm 33 clockwise in FIG. Since the unit sheets 2a and 2b pass through the buffer unit 6, the unit sheets 2a and 2b that have passed through are not bound by the binding unit 7, but also pass through the binding unit 7 and are stacked. It is transported without becoming a booklet.
[0023]
In the present invention, the first stitcher 45a and the second stitcher 45b of the binding unit 7 are arranged side by side in the transfer direction of the unit paper, the first stitcher 45a is arranged on the upstream side in the transfer direction, and the second stitcher is It is arranged downstream of the transfer direction so as to be adjacent to the first stitcher 45a. The first stitcher 45a binds the binding position on the upstream side in the transfer direction of the one side portion of the unit sheets 2a and 2b that have been collated, and the second stitcher 45b is downstream in the transfer direction in the side portion. The binding position on the side is bound. Thus, since the first stitcher 45a is arranged on the upstream side in the transport direction and the second stitcher 45b is arranged on the downstream side in the transport direction, the collated unit paper 2a that has been transported to the binding portion 7 is obtained. , 2b, the upstream binding position in the side portion of the unit sheet is bound first. At this time, since the downstream binding position is on the second stitcher 45b side, after the binding at the upstream binding position is performed, the transfer distance is reduced to set the downstream binding position to the first. It becomes possible to match the two stitchers 45b.
[0024]
Further, as shown in FIG. 7, the conveying means 44 in the binding unit 7 is composed of a plurality of belts, and the outer belt 44a is arranged to align the downstream side of the collated unit sheet in the transport direction. A first aligning portion 44b raised in a fin shape is provided, and a second aligning portion 44d raised in a fin shape is provided on the inner belt 44c to align the side on the upstream side in the transfer direction. ing. When aligning the collated unit sheets that have been transferred to the binding unit 7, first, the first unit sheet is placed with the unit sheets interposed therebetween so that the interval is slightly wider than the dimension in the transfer direction of the unit sheets. The aligning portion 44b and the second aligning portion 44d are provided so as to temporarily align the unit sheets, and the second aligning portion 44d approaches a position where an interval of about several millimeters is opened with respect to the main aligning position, and is temporarily stopped. Is done. After that, the second aligning portion 44d is provided so as to move to the main alignment position and perform the main alignment on the unit paper.
In the transport unit 44, when the first aligning unit 44b and the second aligning unit 44d perform the main alignment, the unit sheet is first bound on the upstream side of the unit sheet while the unit sheet is constrained by the both aligning units. After the position is conveyed and stopped so as to align with the first stitcher 45a, and the binding is performed by the first stitcher 45a, the binding position on the downstream side of the unit sheet is aligned with the second stitcher 45b. In this way, the sheet is conveyed and stopped, and after the binding is performed by the second stitcher 45b, the unit sheet is provided to be transferred to the stacker unit 8.
[0025]
FIG. 8 is a flowchart showing the operation control of the first aligning unit and the second aligning unit.
In preparation for execution, conditions such as dimensions in the transfer direction of the unit sheet are input, and according to these conditions, the temporary alignment position of the first alignment unit and the second alignment unit, the final alignment position, and from the home position to the both positions And the like are calculated (step a). Then, it is determined whether or not the unit sheet has reached the position where the first aligning section is moved to the alignment position after the unit sheet is fed (step b). When the unit sheet reaches that position, the first aligning section moves to the aligning position set for the first aligning section (step c). Thereafter, it is determined whether or not the unit sheet has reached the position where the second aligning unit is moved to the temporary aligning position (step d). The second aligning portion moves to the temporary alignment position set for the second aligning portion and performs temporary alignment (step e). After that, the second aligning unit moves to the main aligning position set for the second aligning unit and performs the main aligning with the first aligning unit (step f). Stage g is binding by the first stitcher. Of course, when the main alignment position is set to the binding position by the first stitcher, the transfer to the first stitcher becomes unnecessary. Stage h is transfer to the second stitcher. Stage i is binding by the second stitcher. Stage j is moving to the home position. Thereafter, at step k, it is determined whether to return to step b or end.
[0026]
The present invention is not limited to the above-described embodiment. For example, the present invention can be applied to continuous sheet processing in addition to processing page unit sheets in which a plurality of unit sheets constituting one collating unit are connected. Good. When this continuous paper is used, a tractor device is used as a supply unit, and the marginal part is cut and removed by a slitter.
[0027]
【The invention's effect】
As described above, the bookbinding apparatus according to the present invention is a continuous unit sheet in which unit sheets to be collated are connected, or a page unit sheet in which a plurality of unit sheets constituting one collation unit to be collated are connected. A supply unit for supplying the paper, a cutting unit for cutting continuous paper or page unit paper supplied from the supply unit into unit paper, and each unit paper transported from the cutting unit are sequentially fed downwards The bookbinding apparatus includes a buffer unit that collates each collation unit, a binding unit that binds the collated unit sheets, and a stacker unit that stocks the bound booklet, and the binding unit includes: A first stitcher that binds the binding position upstream of the side in the transfer direction at one side along the transfer direction of the collated unit sheet, and a second stitcher that binds the binding position of the side at the downstream in the transfer direction. The two stitcher are aligned along the transfer direction of the unit sheet, said first stitcher is arranged in the transport direction upstream side, the second stitcher is being arranged in the transport direction downstream side, and the binding unit, Conveying means comprising a first aligning section that aligns the side on the downstream side in the transport direction of the collated unit paper and a second aligning section that aligns the side on the upstream side in the transport direction is provided. The unit sheets restrained by the first and second aligning portions are transported based on at least a transport amount calculated from a dimension in the transport direction of the unit sheets, and the binding position of the restrained unit sheets is determined as the binding position. It has the structure which positions for every 1st, 2nd stitcher, It is characterized by the above-mentioned. As a result, the collated unit sheet transferred to the binding unit is first bound with the binding position on the upstream side in the transfer direction on the side of the unit sheet, and the downstream binding position is the second stitcher side. In order to adjust the downstream binding position to the second stitcher after the binding at the upstream binding position is performed, the transfer distance can be reduced. You will be able to do it efficiently. Then, the unit paper is guided to the binding position to the first and second stitchers by the conveying means, so that the position adjustment of the stitcher is not required even if the size of the unit paper (size in the transfer direction) is changed. Etc., and has an effect that is excellent in practicality.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram schematically showing an example of a bookbinding apparatus according to the present invention.
FIG. 2 is an explanatory diagram showing a plane of a page unit sheet.
FIG. 3 is an explanatory diagram showing an enlarged buffer unit;
FIG. 4 is an explanatory view showing a supply unit and a slitter part in an enlarged manner.
FIG. 5 is an explanatory diagram showing circuit connection of each unit.
FIG. 6 is an explanatory diagram showing the operation in a flowchart.
FIG. 7 is an explanatory diagram illustrating a conveying unit in a binding unit.
FIG. 8 is an explanatory diagram showing the operation of the conveying means in a flowchart.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Bookbinding apparatus 2 ... Page unit paper 2a, 2b ... Unit paper 3 ... Supply part 4 ... Slitter 5 ... Cutting part 6 ... Buffer part 7 ... Binding part 8 ... Stacker part 44 ... Conveying means 44b ... 1st alignment part 44d ... 2nd alignment part 45a ... 1st stitcher 45b ... 2nd stitcher

Claims (2)

A supply unit that supplies continuous paper in which unit sheets to be collated are connected, or a page unit sheet in which a plurality of unit sheets forming one collation unit to be collated are connected, and is supplied from the supply unit A cutting section that cuts continuous sheets or page unit sheets into unit sheets, a buffer section that sequentially feeds the unit sheets transferred from the cutting section and collates each collating unit, and A bookbinding apparatus comprising a binding unit that binds collated unit sheets and a stacker unit that stocks the bound booklet,
The binding unit binds the first stitcher that binds the binding position on the upstream side in the transport direction on one side along the transport direction of the collated unit paper, and the first stitcher that binds the binding position on the downstream side in the transport direction on the side. Two stitchers, wherein both the stitchers are arranged along a unit sheet transfer direction, the first stitcher is arranged upstream in the transfer direction, and the second stitcher is arranged downstream in the transfer direction ,
And the said binding part is provided with the 1st alignment part which aligns the edge part of the conveyance direction downstream in the unit paper collated, and the 2nd alignment part which aligns the edge part of the conveyance direction upstream. Is provided,
The transport means transports the unit paper restrained by the first and second aligning units based on at least a transport amount calculated from a dimension in the transport direction of the unit paper, and the restraint unit paper A bookbinding apparatus having a configuration in which a binding position is aligned for each of the first and second stitchers . The conveying means includes a plurality of belts, and the first aligning portion is provided on a pair of belts in the plurality of belts, and the first aligning portion is downstream in the transport direction in the united collated unit sheet. In order to align the side portions of the belt, the belt is raised in a fin shape, and the second alignment portion is provided on a pair of belts other than the belt provided with the first alignment portion. 2. The bookbinding apparatus according to claim 1 , wherein the portion is raised in a fin shape from the belt in order to align the side portion on the upstream side in the transport direction of the collated unit paper .

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