JP4631613B2 - Bookbinding apparatus and image forming system - Google Patents

Description

  The present invention relates to a bookbinding apparatus in which glue is applied to the back of a sheet bundle and the back and front and back surfaces of the sheet bundle are covered with a cover sheet to produce a booklet, and more particularly to an image forming apparatus such as a copying machine, a facsimile machine, or a printer. The present invention relates to an image forming system including a bookbinding apparatus that is connected and applicable.

  As the bookbinding process, a staple binding process and a gluing bookbinding process are known for a single sheet bundle in which printed sheets are stacked.

  As a glue binding apparatus, a glue discharge nozzle is used to discharge glue on paper, a glue wheel is installed in the glue storage box, glue is attached to the outer periphery of the rotating glue wheel, and the outer periphery of the glue wheel is brought into contact with the paper. A contact transfer device, a hot melt application device that discharges a mixture of hot melt agent (thermal adhesive) and heated compressed air from a nozzle, and a sheet bundle while heating a tape pre-applied with adhesive glue. A tape applicator for attaching to the back is known.

  A cover is pasted on the back side of the sheet bundle that has been glued and transferred to create a booklet that has been covered.

  Recent image forming apparatuses such as an electrophotographic system have high-speed performance, multi-functions, network functions, and the like, and the use as a printing apparatus is expanding by connecting a large-capacity paper feeder and a large-capacity stacker .

  When an image forming apparatus such as an electrophotographic system is used as a printing apparatus, it is possible to perform printing to bookbinding with a single apparatus by connecting a bookbinding apparatus that binds printed matter.

In the bookbinding apparatuses described in Patent Document 1 and Patent Document 2, an image forming system in which an image forming apparatus and a miniaturized glue binding apparatus are connected is proposed.
JP 2004-209869 A JP 2004-209870 A

  In the bookbinding apparatus described in Patent Literature 1 and Patent Literature 2, when the booklet after the cover is attached is placed on the booklet discharge means, the cover may be bent and the bookbinding quality may be reduced. It was not considered enough.

  The present invention aims to solve such problems and improve the quality of bookbinding. It is another object of the present invention to provide an image forming system including a bookbinding apparatus that improves the quality of finished bookbinding and maintains productivity.

  The above object is solved by the following bookbinding apparatus and image forming system of the present invention.

(1) A bookbinding apparatus according to the present invention is a bookbinding apparatus for producing a booklet by performing a bookbinding process in which a cover is pasted on the back of a sheet bundle subjected to a glue application process.
A bookbinding process is performed in which the cover is transported toward the back of the sheet bundle gripped by the gripping means, which is disposed opposite to the gripping means that grips the sheet bundle that has been subjected to the glue application process. Movable cover exterior means,
Booklet transport means for placing and transporting the booklet that has been bound and bound by the cover by the cover cover means;
A movable cover holding member for supporting the case-bound cover;
Driving means for driving the cover holding member,
After the cover sheet is adhered to the back of the sheet bundle by the cover sheet exterior unit, the cover sheet exterior unit is retracted from the cover sheet adhesion position, and the sheet bundle having the cover sheet adhered is placed on the booklet conveying unit. The cover holding member is moved by the driving means to lift the cover , and
The booklet conveying means is orthogonal to the booklet conveying direction and is movable in parallel with the booklet conveying surface, and is arranged in a direction orthogonal to the booklet conveying direction before the booklet is placed. It moves to the position according to size, It is characterized by the above-mentioned.

(2) bookbinding device according to item (1), the booklet transporting means, the matching means to the end position in the direction perpendicular to the conveying direction of the cover sheet before it is adhered to the front Stories sheet bundle And aligning the cover by the aligning means, then moving and retracting in a direction perpendicular to the transport direction parallel to the transport surface, and then the transport direction of the booklet before the booklet is placed. It moves to the position according to the size of the orthogonal direction, It is characterized by the above-mentioned.

(3) bookbinding apparatus of the present invention, (1) or (2) Oite on, the cover holding member may be disposed in at least the discharge direction downstream side of the case binding process booklet of the cover-sheet outfitting device It is characterized by.

(4) image imaging system of the present invention, the image forming unit, the image forming apparatus main body having a paper conveying means, for bookbinding the sheets on which an image is formed by the image forming apparatus main body (1) to (3) a bookbinding apparatus according to any one and is characterized in that it comprises an.

  The following effects can be obtained by the bookbinding apparatus and the image forming system of the present invention.

(1) After the cover exterior means sticks the cover on the back of the sheet bundle, when the booklet composed of the cover and the sheet bundle is placed on the booklet transport means, the cover holding member is moved to lift the cover The problem that the booklet cover is sandwiched between the booklet conveying means and the booklet and the booklet is damaged is solved, and a high-quality booklet can be produced. Further, when the booklet transport means moves to a position where the booklet can be placed, the cover cover is lifted by moving the cover holding member, so that the book cover is sandwiched between the booklet transport means and the booklet and the booklet is damaged. This solves the problem and makes it possible to produce high-quality booklets.

( 2 ) Align the front cover before being attached to the paper bundle, properly align the front cover and the paper bundle, and move and retract to a position where there is no hindrance when attaching the front cover. After that, the cover sheet is lifted by the cover sheet holding member when the booklet transport means is moved to a position where the booklet can be placed, so that a higher quality booklet can be produced.

( 3 ) The cover sheet holding member is disposed at least on the downstream side of the cover sheet conveying direction with respect to the cover sheet covering means, so that the booklet cover sheet is moved in the process of being placed on the booklet conveying means. The problem of the booklet being damaged by being sandwiched between the booklet and the booklet is solved, and a high-quality booklet can be produced.

( 4 ) By the image forming system provided with the bookbinding apparatus of the present invention, the paper bundle carried out from the image forming apparatus main body is accurately glued between the bundle of sheets and the cover, and the book is automatically and continuously bound. It is possible to process.

  Next, a bookbinding apparatus of the present invention and an image forming system including the bookbinding apparatus will be described with reference to the drawings.

[Image forming system]
FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus main body A, a bookbinding apparatus B, and a paper discharge apparatus C. FIG. 2 is an external perspective view of the image forming system.

[Image forming apparatus]
The image forming apparatus main body A has an image forming unit in which a charging unit 2, an image exposing unit 3, a developing unit 4, a transfer unit 5A, a charge removing unit 5B, and a cleaning unit 6 are arranged around a rotating image carrier 1. . The image forming means uniformly charges the surface of the image carrier 1 by the charging means 2 and then performs exposure scanning based on the image data read from the document by the laser beam of the image exposure means 3 to form a latent image. Then, the latent image is reversely developed by the developing means 4 to form a toner image on the surface of the image carrier 1.

  The paper S fed from the paper storage unit 7A is sent to the transfer position. The toner image is transferred onto the paper S by the transfer means 5A at the transfer position. Thereafter, the charge on the back surface of the sheet S is erased by the charge eliminating unit 5B, separated from the image carrier 1, conveyed by the conveying unit 7B, heated and fixed by the fixing unit 8, and discharged from the sheet discharge roller 7C.

  When image formation is performed on both sides of the sheet S, the sheet S heated and fixed by the fixing unit 8 is branched from the normal sheet discharge path by the conveyance path switching unit 7D, and is switched back in the reverse conveyance unit 7E. After the reversal, it passes through the image forming unit again, forms an image on the back surface of the paper S, and is discharged from the paper discharge roller 7C to the outside of the apparatus via the fixing unit 8. The paper S discharged from the paper discharge roller 7C is sent to the bookbinding apparatus B.

  The developer remaining on the surface of the image carrier 1 after image processing is removed by the cleaning unit 6 to prepare for the next image formation.

[Bookbinding device]
FIG. 3 is a cross-sectional view showing the sheet conveyance path of the bookbinding apparatus B according to the present invention.

  The bookbinding apparatus B includes a sheet introduction unit 10, a sheet discharge unit 20, a sheet bundle storage unit 30, a sheet bundle conveyance unit 40, a glue application unit 50, a cover sheet supply unit 60, a cover sheet cutting unit 70, a cover sheet exterior unit (case binding unit). 80, an aligning means 90, and a booklet conveying means 100. Each of these means is arranged in a column in a substantially vertical direction in the bookbinding apparatus main body.

<Paper introduction means 10>
The paper S introduced into the paper introduction unit 10 is nipped and conveyed by the entrance rollers 11 and 12, and is branched to either the paper discharge unit 20 or the paper bundle storage unit 30 by the conveyance path switching unit 31.

<Discharge means 20>
When the sheet conveyance is set, the conveyance path switching unit 31 blocks the conveyance path to the sheet bundle housing unit 30 and opens the conveyance path to the paper discharge unit 20.

  The sheet S passing through the conveyance path of the sheet discharge unit 20 is nipped by the conveyance rollers 21 and 22 and conveyed upward, and is discharged and stored on the fixed sheet discharge table 24 at the top of the apparatus by the sheet discharge roller 23. On the fixed sheet discharge table 24, the sheets S discharged from the image forming apparatus main body A can be directly received, and a maximum of about 200 sheets can be stacked.

<Paper bundle accommodating means 30>
The sheet S branched to the left in the drawing on the downstream side in the sheet conveyance direction by the conveyance path switching unit 31 is sandwiched between the conveyance rollers 32, 33, 34, 35, and 36 and is accommodated in a predetermined position of the sheet bundle accommodation unit 30. Stacked, a sheet bundle Sa composed of a predetermined number of sheets S is formed. The sheet bundle accommodating means 30 includes a sheet placing table 37 that is inclined, a movable sheet rear end positioning member 38, a sheet width aligning member 39 that positions the sheet width direction, and the like.

<Paper bundle conveying means 40>
The sheet bundle Sa stacked on the sheet placing table 37 of the sheet bundle accommodating means 30 is conveyed obliquely downward by an unillustrated pushing means. After that, the sheet bundle Sa is gripped by the gripping means 41 of the sheet bundle transport means 40, and is swung so that the surface (back) for applying the glue to the sheet bundle Sa is turned downward while holding the sheet bundle Sa. Stopped in position.

<Glue application means 50>
FIG. 4 is a cross-sectional view of the bookbinding apparatus B showing the glue application processing to the sheet bundle Sa, and FIG. 5 is a perspective view of the glue application means 50 and the gripping means 41.

  The glue application means 50 includes a glue application member (also referred to as application roller) 51, a rotation means 52 that rotationally drives the application roller 51, a glue container 53 that contains glue, an application roller 51, a rotation means 52, and a glue container 53. The movable body 54 is supported and can be moved from the initial position on the back side of the bookbinding apparatus B to the glue application position on the front side, and moving means (not shown) that reciprocates the movable body 54.

  The moving body 54 of the glue applying unit 50 is moved by a driving unit (not shown) in a direction parallel to the longitudinal direction of the lower surface of the sheet bundle Sa held upright by the gripping unit 41.

  The moving body 54 starts moving from the initial position on the back side of the bookbinding apparatus B, is moved along the guide member 55, stops at a predetermined position on the front side of the bookbinding apparatus B, and then reversely drives to return to the initial position. To do.

  The application roller 51 immersed in the paste container 53 containing the paste N is rotated by the motor M0 and the rotating means 52. The application roller 51 applies the glue N in the longitudinal direction of the lower surface of the sheet bundle Sa held in an upright state by the forward movement or reciprocation of the moving body 54.

<Cover Supply Unit 60>
As shown in FIG. 3, the cover sheet K accommodated in the sheet supply tray 61 of the cover sheet supply means 60 is separated and fed by the sheet supply means 62, and is sandwiched between the transport rollers 63, 64, 65 to be covered with the cover sheet exterior. It is conveyed to the means 80.

<Cover cutting means 70>
On the upper side of the cover sheet supply means 60, a cover sheet cutting means 70 is integrally formed on the right side of a cover sheet exterior means 80, which will be described later. The cover cutting means 70 cuts the length in the conveyance direction of the cover K to a predetermined length.

  The cover cutting means 70 is a roller cutter unit composed of a rotary blade and a fixed blade. The rotary blade rotates while being in sliding contact with the fixed blade, and shears the cover K in the cover width direction. The scrap part of the sheared cover sheet K falls and is stored in the waste box.

  The cutting length of the cover sheet K is a length obtained by adding the length of the back portion of the sheet bundle Sa to the length of two sheets in the traveling direction of the sheet S. When the sheet size, the number of sheets, and the sheet thickness are selected or detected by the operation unit 9 of the image forming apparatus main body A or detected by the detection unit, the control unit sets a predetermined cut length of the cover sheet K.

<Cover cover means 80>
The cover sheet K stored in the sheet supply tray 61 of the cover sheet supply means 60 is separated and fed by the sheet supply means 62, sandwiched between the conveying rollers 63, 64, 65, and introduced into the cover sheet exterior means 80. Then, it is conveyed in the reverse direction and enters the cover cutting means 70. The cover sheet K cut to a predetermined length by the cover sheet cutting means 70 is conveyed again to the cover sheet exterior means 80.

<Alignment means 90>
6A is a plan view of the aligning means 90 and the discharge belt 101 attached to the aligning means 90, FIG. 6B is a side view, and FIG. 6C is a front view. FIG. 7 is a plan view of the driving means of the aligning means 90.

  An aligning means 90 and a discharge belt 101 are arranged on the upper part of the cover sheet exterior means 80. The aligning means 90 includes a pair of aligning plates 91A and 91B that can move in the width direction of the cover sheet K, a pair of support members 92A and 92B that support the aligning plates 91A and 91B, and support members 92A and 92B. And two guide bars 93 that are movably guided in the direction.

  The motor M3 rotates the pulley 95A via the belt 94A, the intermediate pulley 94B, and the belt 94C. The belt 96 around which the pulley 95A is wound is wound around the other pulley 95B arranged symmetrically in the cover width direction and rotated.

  The pulley 95A rotates the pulley 98A via the belt 97. The belt 99 around which the pulley 98A is wound is wound around the other pulley 98B arranged symmetrically in the cover width direction and rotated.

  A support member 92A is locked to a part of the belts 96 and 99, a support member 92B is locked to the other part of the belts 96 and 99, and the alignment plates 91A and 91B are covered by the normal rotation of the motor M3. The cover sheet K moves to the center in the width direction and is aligned by the alignment plates 91A and 91B. Further, due to the reverse rotation of the motor M3, the alignment plates 91A and 91B move to the side end portion side in the cover width direction and retract to the initial position.

  When the cover sheet covering unit 80 stops at the lowered position and introduces the cover sheet K, the aligning unit 90 moves from the initial position and presses both side surfaces in the width direction of the cover sheet K before the cutting process to perform width alignment. The cover K whose width is aligned and the curvature is corrected is conveyed to the cover cutting means 70 and cut at a predetermined position.

  Further, prior to attaching the cut cover sheet K to the back of the sheet bundle Sa, the aligning means 90 moves from the initial position and presses both sides in the width direction of the cover sheet K to perform width alignment. Place in place. After that, the cover sheet K is raised while the cover sheet K is held at a predetermined position by a holding unit (not shown), and the cover sheet K is adhered to the back of the sheet bundle Sa to which the glue is applied.

  Accordingly, the aligning means 90 installed on the cover cover means that can be moved up and down is positioned in the cover width direction when the cover K is cut by the cover cutting means 70, and the cover width direction before the cover K is pasted by the cover cover means By performing the positioning, the cover cutting accuracy is improved, the cover exterior accuracy is improved, and the structure is simplified.

  Further, the discharge belt 101 disposed on the upper part of the aligning unit 90 discharges the booklet Sb that has been subjected to the bookbinding process by sticking the cover K to the sheet bundle Sa to the outside of the apparatus.

<Cover transport process>
FIG. 8 is a cross-sectional view of the cover sheet cutting means 70 and the cover sheet exterior means 80, and FIG. 9 is a perspective view showing the elevation drive of the cover sheet exterior means.

  The cover sheet K introduced into the cover sheet exterior means 80 is transported by the transport roller 65, travels along the guide plate 87, passes through the transport roller 81 that rotates, and passes through the transport roller 82 that rotates.

  The motor M2A swings and drives the cover sheet pressing member 88 via a drive transmission system Z1 including a belt and a gear train. The motor M2B swings and drives the cover sheet pressing member 89 via a drive transmission system Z2 including a belt and a gear train.

  The cover sheet pressing member 88 is rotatably supported by a rotating shaft 881 that can be rotated by being connected to the final gear of the drive transmission system Z1, a lever 882 that is fixed to the rotating shaft 881 and can be swung, and one end of the lever 882. And a roller 883.

  The cover sheet pressing member 89 is rotatably supported by a rotating shaft 891 that can be rotated by being connected to the final gear of the drive transmission system Z2, a lever 892 that is fixed to the rotating shaft 891 and can be swung, and one end of the lever 892. And a roller 893.

  When the cover sheet K enters along the guide plate 87 in the cover sheet exterior means 80, the motor M2A starts driving, swings the lever 882, and comes into pressure contact with the transport roller 81 driving and rotating the roller 883. At almost the same time, the motor M2B starts driving, swings the lever 892, and presses against the conveying roller 82 that rotates the roller 893.

  The cover sheet K entering along the guide plate 87 is nipped and conveyed by the conveyance roller 81 and the roller 883 on the upstream side in the conveyance direction, and is subsequently nipped and conveyed by the conveyance roller 82 and the roller 893 on the downstream side in the conveyance direction. After that, it is stopped at a predetermined position.

  FIG. 10 is a perspective view showing the raising / lowering driving of the cover exterior means 80.

  The movable casing 84 of the cover sheet exterior means 80 is supported by two belts 85A arranged on the front side F and two belts 85B arranged on the back side R. The motor M2A of the first drive means rotates the belt 85A and drives the front side F of the movable housing 84 up and down. The motor M1B of the second drive means rotates the belt 85B and drives the back side R of the movable casing 84 up and down. By separately raising and lowering the front side F and the back side R of the movable casing 84, the pressing member 83 disposed on the movable casing 84 is gripped by the gripping means 41 stopped at the fixed position. The sheet bundle Sa can be uniformly pressed against the ground side L and the top side U of the back of the sheet bundle Sa.

  FIG. 11 is a cross-sectional view of the front cover exterior means 80 immediately before the upper limit position.

  While the cover K placed on the cover cover means 80 is moved to the vicinity of the paste application processing surface by the drive means of the cover cover means 80, the cover press by the drive means (motors M2A and M2B) of the cover press members 88 and 89 is performed. The members 88 and 89 are swung, and the cover sheet K is pressed by a spring (not shown). As a result, the cover K is prevented from moving during the movement of the cover cover means 80, and is accurately adhered to the glue application surface of the sheet bundle Sa.

  When the detection means PS detects that the cover sheet K is close to the glue application surface of the sheet bundle Sa, the cover sheet pressing members 88 and 89 release the cover sheet pressing by the motors M2A and M2B.

<Production of booklet>
FIG. 12 is a perspective view showing a booklet production process. FIG. 12A is a perspective view showing the cover sheet K placed on the movable casing 84 of the cover sheet exterior means 80 and the sheet bundle Sa attached to the center of the cover sheet K. FIG. FIG. 12B is a perspective view showing a state where the glue-attached sheet bundle Sa is bound and bound by the cover sheet K folded by the folding member 86 and the pressing member 83. FIG. 12C is a perspective view of the booklet Sb bound and bound.

  In these drawings, F represents the front side of the cover sheet exterior means 80, and R represents the back side. U represents a top portion representing the top surface when the sheet bundle Sa and booklet Sb are upright, and L represents a ground portion representing the bottom surface side of the sheet bundle Sa and booklet Sb.

<Bending the cover>
FIG. 13 is a cross-sectional view showing the cover K folding process. FIG. 13A shows the start of cover folding, FIG. 13B shows the middle of cover folding, and FIG. 13C shows the end of cover folding.

  After the cover sheet K is adhered to the sheet bundle Sa to which the glue N is adhered, the pair of folding members 86 are driven by a driving unit (not shown) in the ascending state of the cover sheet exterior unit 80 shown in FIG. The gripping means 41 that grips the sheet bundle Sa descends. By lowering the sheet bundle Sa, the cover sheet K is sandwiched and lowered by the pair of bending members 86, and is curved from the side edge portion of the glue application surface of the sheet bundle Sa. The pair of bending members 86 moves in the horizontal direction toward the glue application surface side of the sheet bundle Sa and presses and shapes both side surfaces of the sheet bundle Sa to form a booklet Sb.

  FIG. 13D shows the time when the cover folding pressurization is released.

<Ejection of booklet>
FIG. 14 is a front view showing the lowering process of the cover sheet exterior means 80.

  A first cover sheet holding member 111 is fixed on the axis of the rotation shaft 891 of the cover sheet pressing member 89 supported by the movable casing 84 of the cover sheet exterior means 80. The first cover sheet holding member 111 swings around the rotation shaft 891 together with the cover sheet pressing member 89.

  After the cover sheet K folding process is completed, the cover cover exterior unit 80 is lowered in the direction of the white arrow by the lowering drive of the belts 85A and 85B.

  In the process of lowering the cover sheet covering means 80 by the lowering driving of the belts 85A and 85B, the motor M2B is driven, and the first cover sheet holding member 111 swings to lift the illustrated left side of the cover sheet K.

  Also, the right side of the cover sheet K in the figure is placed on the upper surface of the second cover sheet holding member 112 that is raised by the activation of the solenoid SOL and lifted.

  FIG. 15 is a front view showing the discharge process of the booklet Sb composed of the sheet bundle Sa and the cover K.

  The rotation of the discharge belt 101 is started by a driving means (not shown), and the sheet bundle Sa to which the cover sheet K is attached is lowered, so that the lower end portion of the discharge belt 101 contacts the discharge belt 101 and rotates. Is slid.

  The booklet Sb in which the cover sheet K is bonded to the sheet bundle Sa is placed flat on the surface of the rotating discharge belt 101, conveyed, discharged outside the apparatus, and discharged from the discharge opening 102 to the sheet discharge apparatus C outside the apparatus. It is discharged (see FIG. 1).

<Discharge device C>
The booklet Sb discharged by the discharge belt 101 is placed on the lifting / lowering discharge tray 103 of the discharge device C shown in FIG. When the booklet Sb is discharged and stacked on the lifting / lowering tray 103, the lifting / lowering tray 103 is sequentially lowered by the rotating wire 104. When the elevating / discharging tray 103 reaches the bottom dead center, the booklet Sb is transferred to the transport belt 105 and is discharged out of the apparatus by the rotation of the transport belt 105.

  Note that the bookbinding apparatus B of the present invention is formed in an independent apparatus and the sheet bundle Sa processed by another image forming apparatus is loaded on the sheet bundle accommodating means 30, and then the glue application process and the cover cover exterior process are performed. It is also possible to make case binding.

  By the image forming system including the bookbinding apparatus of the present invention, the sheet S carried out from the image forming apparatus main body A at high speed is subjected to an accurate gluing process between the sheet bundle Sa and the cover sheet K, and continuously automatically. It is now possible to perform bookbinding processing.

1 is an overall configuration diagram of an image forming system including an image forming apparatus, a bookbinding apparatus, and a paper discharge apparatus. 1 is an external perspective view of an image forming system. FIG. 3 is a cross-sectional view illustrating a paper conveyance path of the bookbinding apparatus according to the present invention. FIG. 3 is a cross-sectional view of a bookbinding apparatus showing a glue application process on a sheet bundle. The perspective view of an adhesive application means and a holding means. FIG. 4 is a plan view, a side view, and a front view of an alignment unit and a discharge belt attached to the alignment unit. The top view of the drive means of an alignment means. Sectional drawing of a cover cutting means and a cover exterior means. The perspective view which shows the raising / lowering drive of a cover sheet exterior means. The perspective view which shows the raising / lowering drive of a cover sheet exterior means. Sectional drawing which shows just before the upper limit position of a cover exterior means. The perspective view which shows the preparation process of a booklet. Sectional drawing which shows the bending process of the cover K. FIG. The front view which shows the descent | fall process of a cover sheet exterior means. The front view which shows the discharge process of the booklet which consists of a sheet bundle and a cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Paper introduction means 20 Paper discharge means 30 Paper bundle storage means 40 Paper bundle conveyance means 41 Grip means 50 Glue application means 60 Cover sheet supply means 70 Cover sheet cutting means 80 Cover sheet exterior means (case binding means)
81, 82 Conveying roller 83 Pressure member 84 Moving housing 85, 85A, 85B Belt 86 Bending member 87 Guide plate 88, 89 Cover sheet pressing member 90 Alignment means 100 Booklet conveying means 101 Discharge belt 111 First cover sheet holding member 112 Second cover holding member A Image forming apparatus main body B Bookbinding apparatus C Paper discharge apparatus Sa Paper bundle Sb Booklet SOL Solenoid

Claims (4)

In a bookbinding device that creates a booklet by binding a cover onto the back of a paper bundle that has undergone glue application processing,
A bookbinding process is performed in which the cover is transported toward the back of the sheet bundle gripped by the gripping means, which is disposed opposite to the gripping means that grips the sheet bundle that has been subjected to the glue application process. Movable cover exterior means,
Booklet transport means for placing and transporting the booklet that has been bound and bound by the cover by the cover cover means;
A movable cover holding member for supporting the case-bound cover;
Driving means for driving the cover holding member,
After the cover sheet is adhered to the back of the sheet bundle by the cover sheet exterior unit, the cover sheet exterior unit is retracted from the cover sheet adhesion position, and the sheet bundle having the cover sheet adhered is placed on the booklet conveying unit. The cover holding member is moved by the driving means to lift the cover , and
The booklet conveying means is orthogonal to the booklet conveying direction and is movable in parallel with the booklet conveying surface, and is arranged in a direction orthogonal to the booklet conveying direction before the booklet is placed. Move to a position according to the size,
A bookbinding apparatus characterized by that. The booklet conveying means has an aligning means at an end position in a direction orthogonal to the conveying direction of the cover before being attached to the sheet bundle, and after aligning the cover by the aligning means, the conveying Go retracted in a direction perpendicular to the plane and parallel to the transport direction, then the feature to move in the booklet in accordance with the direction of the size perpendicular to the conveying direction of the booklet before being placed position The bookbinding apparatus according to claim 1. It said cover holding member, bookbinding device according to claim 1 or 2, characterized that you have been placed in the discharge direction downstream of at least a case binding process booklet of the cover-sheet outfitting device. An image forming apparatus main body having an image forming unit and a sheet conveying unit, and a bookbinding apparatus according to any one of claims 1 to 3, which binds a sheet on which an image is formed by the image forming apparatus main body. An image forming system characterized by comprising:

Images