JP2007045040A - Bookbinding device and image forming system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming system equipped with a bookbinding device, with which a sure cover casing-in bookbinding is performed, the improved finishing quality of a bookbinding is realized and a productivity such as a high speed processing is maintained. <P>SOLUTION: In the bookbinding device for casing-in bookbindingly processing a paper bundle with a cover, a cover wrapping means, on which a cover is installed and which can move to a predetermined position, at which the cover is brought into contact with the paper bundle and a booklet conveying means, which conveys a booklet formed by casing-in bookbinding the paper bundle with the cover and which is provided in the cover wrapping means, are provided under the condition that the booklet conveying means can move to positions, which are equal to the inside and outside of the booklet in the width direction normal to the conveying direction of the booklet. <P>COPYRIGHT: (C)2007,JPO&INPIT

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 gluing device, a gluing device is used to eject gluing paper, a gluing wheel is installed in the gluing box, glue is attached to the outer circumference of the rotating gluing wheel, and the outer circumference of the gluing wheel is brought into contact with the paper. Contact transfer device, hot melt application device that discharges a mixture of hot melt agent (heat fusion agent) and heated compressed air from nozzle, back of paper bundle while heating tape pre-applied with adhesive glue A tape applicator for attaching to a tape 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.

  For example, an electrophotographic image forming apparatus has high-speed performance, multiple functions, a network function, and the like, and uses as a printing apparatus are expanded by connecting a large-capacity paper feeding apparatus and a large-capacity stacker.

  When the image forming apparatus is used as a printing apparatus, printing to bookbinding can be performed by 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

  The gluing bookbinding apparatus disclosed in Patent Literature 1 and Patent Literature 2 includes a cover sticking means 70 including a movable casing 74 that moves in the vertical direction to press the cover against the glue application surface of the sheet bundle. The booklet conveying means 90 moves in the vertical direction as the movable casing moves up and down. Further, the booklet conveying means 90 includes two discharge belts 91 and 92, and the discharge belt 91 is provided so as to be swingable with respect to the discharge belt 92. When the cover is attached to the sheet bundle by moving the movable housing 74 upward, the discharge belt 91 is swung upward and folded, and when the booklet with the cover attached is received and conveyed, the discharge belt 91 91 is swung downward and stopped at the lower position of the booklet. Therefore, a large space necessary for swinging the discharge belt 91 up and down is required. In addition, there is a problem in the durability of the mechanism that swings the discharge belt 91 up and down greatly.

  An object of the present invention is to solve the above-described problems, improve the bookbinding apparatus, and provide a bookbinding apparatus having a simple configuration. It is another object of the present invention to provide an image forming system including a bookbinding apparatus that enables high-speed processing.

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

  (1) In a bookbinding apparatus that performs a case binding process on a sheet bundle with a cover sheet, a cover sheet exterior unit that places the cover sheet and is movable to a predetermined position where the cover sheet is in contact with the sheet bundle; and the sheet bundle is wrapped with the cover sheet. A booklet transport unit that transports the bound booklet and is provided on the cover cover exterior unit, and the booklet transport unit corresponds to the inside and the outside of the booklet in the width direction orthogonal to the transport direction of the booklet. A bookbinding apparatus capable of moving to a position.

  (2) The bookbinding apparatus according to (1), wherein the booklet transport unit includes an alignment unit that positions the width direction of the cover before bookbinding.

  (3) The booklet transport means moves the booklet from the position corresponding to the outside of the booklet when the cover exterior means moves up to the predetermined position and lowers a predetermined amount after joining the cover to the sheet bundle. The bookbinding apparatus according to (1) or (2), wherein the bookbinding apparatus moves to a position corresponding to the inside.

  (4) The bookbinding according to any one of (1) to (3), wherein the booklet transport unit is configured to change a position corresponding to the inside of the booklet according to the size of the booklet. apparatus.

  (5) An image forming apparatus main body having an image forming unit and a sheet conveying unit, and the bookbinding apparatus according to any one of (1) to (4), which binds a sheet unloaded from the image forming apparatus main body. An image forming system comprising:

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

  (1) Since the cover cover means and the booklet conveying means are integrated, the case-bound booklet can be immediately conveyed to the downstream side, and booklet production efficiency is improved. Further, since the booklet conveying means can be moved to positions corresponding to the inside and outside of the booklet in the width direction orthogonal to the conveying direction, the space required for movement can be made relatively small, and the durability can be increased. You can improve.

  (2) Since the booklet transport means has alignment means for positioning the position in the width direction of the cover before bookbinding, the structure of booklet transport and cover alignment is simplified, a reliable cover bookbinding process is implemented, and high quality Can be produced.

  (3) Since the booklet transport means moves from a position corresponding to the outside of the booklet to a position corresponding to the inside when the cover cover exterior means is lowered by a predetermined amount after the cover sheet is joined to the sheet bundle, the booklet transport means Can be reliably moved below the booklet.

  (4) Since the booklet transport means can be moved to a position corresponding to the size of the booklet, the booklet can be transported at a well-balanced position in consideration of the center of gravity of the booklet. Therefore, the reliability of conveyance can be improved.

  (5) By the image forming system including the bookbinding apparatus of the present invention, the booklet is automatically and continuously bound to the paper carried out from the image forming apparatus body without reducing the productivity of the image forming apparatus body. 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 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 A includes an image forming unit in which a charging unit 2, an image exposure unit 3, a developing unit 4, a transfer unit 5 </ b> A, a charge eliminating unit 5 </ b> B, 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 conveyance unit 40 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 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 placement table 37 that is inclined, a movable sheet rear end positioning member 38, a sheet width alignment 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>
The glue application unit 50 includes a glue application member (also referred to as application roller) 51, a rotation unit 52 that rotationally drives the application roller 51, a glue container 53 that stores glue, and a back surface of the bookbinding apparatus B that supports the glue container 53. A moving body 54 that can move from the initial position on the side to the glue application position on the front side, and a moving means (not shown) that reciprocates the moving body 54.

<Cover Supply Unit 60>
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, is sandwiched between the conveyance rollers 63, 64, 65, and is conveyed to the cover sheet exterior means 80.

<Cover cutting means 70>
A cover cutting means 70 integrally formed on the upper side of the cover supply means 60 in the figure on the right side of a cover cover exterior means 80 described later cuts the length of the cover K in the conveyance direction to a predetermined length.

  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 in the operation unit 9 of the image forming apparatus A, the control unit sets the predetermined cutting length of the cover sheet K. The length of the cover sheet K before cutting is determined in advance corresponding to the maximum number of sheets, and is stored in the sheet feed tray 61 of the cover sheet supply unit 60.

<Cover cover means 80>
The cover cover means 80 receives and conveys the cover sheet K supplied from the cover sheet supply means 60, and transport rollers 81 and 82 that stop at a predetermined position, and a pressure member that presses the cover sheet K against the glue application surface of the sheet bundle Sa. 83, a moving casing 84 that supports the conveying rollers 81 and 82 and the pressure member 83, and an elevating unit that allows the moving casing 84 to move vertically and vertically.

  By rotating the belt 85 of the elevating means, the movable casing 84 is moved to the upper position. At the raised position, the center portion of the cover sheet K placed on the pressure member 83 is pressed and adhered to the glue application surface of the sheet bundle Sa.

<Alignment means 90>
4A is a plan view of the aligning means 90 and the discharge belt 101 as a booklet conveying means attached to the aligning means 90, FIG. 4B is a side view, and FIG. 4C is a front view. . FIG. 5 is a plan view of the driving means of the alignment means 90.

  An aligning means 90 is disposed on the upper part of the cover sheet exterior means 80. The aligning means 90 is a pair of aligning plates 91A and 91B that can move in the width direction orthogonal to the conveying direction of the cover sheet K, a pair of support members 92A and 92B that support the aligning plates 91A and 91B, and a support member 92A. , 92B, and two guide bars 93 that guide the cover 92 so as to be movable in the cover width direction.

  The motor M2 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, and 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 M2. 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 M2, the alignment plates 91A and 91B move to the side end side in the cover width direction and retract to the initial position.

  When the cover cover means 80 stops at the lowered position and introduces the cover K, the aligning means 90 moves from the initial position according to the size of the cover K and presses both sides in the width direction of the cover K before the cutting process. Perform width alignment. The cover K whose width is aligned and the curvature is corrected is switched back in the direction opposite to the introduction direction, conveyed to the cover cutting means 70, and cut at a predetermined position.

  Further, before the cover cover means 80 adheres and cuts the cut cover K to the back portion of the sheet bundle Sa in the lowered position, the aligning means 90 moves again from the initial position to move the both sides of the cover K in the width direction. Press to perform width alignment and place the cover K in place. Thereafter, the aligning means 90 returns to the initial position so as not to hinder the joining of the cover sheet K and the sheet bundle Sa, and then the cover sheet exterior means 80 is raised. When rising, the cover K is supported at a predetermined position.

  Therefore, the aligning means 90 installed on the cover covering means that can be moved up and down performs positioning in the cover width direction before and after the cutting of the cover K by the cover cutting means 70, thereby improving the cover cutting accuracy and the sheet bundle Sa and the cover. Improvement in alignment accuracy with K and simplification of the structure are achieved.

  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 folding>
A cover folding means is provided on the upper part of the cover exterior means 80. The cover folding means includes a pair of symmetrical folding members 86. The bending member 86 can be contacted and separated in the thickness direction of the sheet bundle Sa. The folding member 86 bends the front cover K along the side edge of the glue application surface of the paper bundle Sa, and superimposes the front cover and the back cover on the front and back surfaces of the paper bundle Sa.

  After the folding process of the cover sheet K, the cover sheet exterior means 80 is lowered and retracted by a predetermined amount by driving the belt 85 downward, and the discharge belt 101 is positioned below the booklet Sb, that is, the width orthogonal to the conveyance direction of the booklet Sb. It moves from the position corresponding to the outside of the booklet Sb in the direction to the position corresponding to the inside and stops. Thereafter, when the holding by the gripping means 41 is released, the booklet Sb descends and stops at a position where the lower portion of the booklet Sb contacts the upper surface of the discharge belt 101.

  The pair of carry-out belts 101 moves to a position in contact with the booklet Sb at a position equal to the center of gravity of the booklet Sb on the inner side in the width direction of the booklet Sb to be transported based on the input or detected paper size. Stop. At this time, if the distance between the pair of carry-out belts 101 in the width direction is too narrow with respect to the width of the booklet Sb, the booklet Sb cannot be conveyed sufficiently stably. On the other hand, the same is true if the pair of carry-out belts 101 is too wide in the width direction.

  Therefore, it stops at an appropriate position for each size of each booklet Sb. The number of pulses of the motor M2 necessary for moving each carry-out belt 101 to a position suitable for each size is stored in advance in a storage unit (not shown), and the driving of the motor M2 is appropriately controlled.

<Booklet transport means 100>
A booklet Sb having a front cover and a back cover formed by attaching a cover K to the back (opposite side of the small edge) of the sheet bundle Sa to which glue has been applied is discharged from the discharge opening 102 by the discharge belt 101 to the sheet discharge apparatus C outside the apparatus. To be discharged. The booklet transport unit 100 is disposed above the cover cover unit 80.

<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.

[Production process for glued book with cover]
<Conveying a stack of sheets and a cover>
As shown in FIG. 3, a sheet bundle Sa composed of a predetermined number of sheets S stacked and aligned on the sheet placing table 37 of the sheet bundle accommodating means 30 is grasped by the grasping means 41. The sheet rear end positioning member 38 is swung by a driving means (not shown) and retracts below the sheet placing table 37. The gripping means 41 that grips the sheet bundle Sa moves obliquely downward as indicated by the broken line in the figure and then turns to hold the sheet bundle Sa in an upright state so that the surface of the sheet bundle Sa on which the paste is applied is on the lower side. Stop in place.

  On the other hand, 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, is sandwiched between the conveyance rollers 63, 64, 65, and is conveyed by the conveyance roller 81 of the cover sheet exterior means 80. , 82 and stopped at a predetermined position.

  The cover sheet cutting means 70 disposed on the right side of the conveyance roller 65 in the drawing cuts the length of the cover sheet K in the conveyance direction to a predetermined length. That is, the length in the conveyance direction of the cover sheet K differs depending on the sheet size and the thickness of the sheet bundle Sa, so that the cover sheet can be obtained by inputting or detecting the sheet size, the number of sheets S, and the thickness of the sheet S in advance. The case length of K is calculated, and the excess portion of the cover sheet K is cut to the optimum length by the cover sheet cutting means 70 prior to the cover sheet sticking.

<Applying glue to the paper bundle>
6 is a cross-sectional view of the bookbinding apparatus B showing the glue application process to the sheet bundle Sa, FIG. 7 is a plan view of the glue application means 50, FIG. 8 is a side view of the glue application means 50 and the gripping means 41, and FIG. 4 is a perspective view of the glue applying unit 50 and the gripping unit 41. FIG.

  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 M2 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.

<Adhesion between paper bundle and cover>
FIG. 10 is a cross-sectional view of the bookbinding apparatus B that bonds the cover sheet K to the sheet bundle Sa.

  After the glue application process on the sheet bundle Sa is completed, the belt 85 is rotated by a driving unit (not shown) to move the movable casing 84 to a rising position as a predetermined position. At the raised position, the center portion of the cover sheet K placed on the pressure member 83 is pressed and adhered to the glue application surface of the sheet bundle Sa.

  Note that the discharge belt 101 is retracted prior to ascent of the cover sheet covering means 80 to prevent interference with the sheet bundle Sa held in an upright state.

<Bending the cover>
FIG. 11 is a cross-sectional view of the cover cover means 80 and the sheet bundle Sa showing the folding of the cover K. FIG. 11 (a) is at the start of cover folding, FIG. 11 (b) is at the middle of cover folding, FIG. ) Shows the time when the cover folding is completed, and FIG. 11D shows the time when the cover bending is released.

  FIG. 12A is a perspective view of the sheet bundle Sa to which the cover sheet K is attached, and FIG. 12B is a perspective view of the booklet Sb produced by folding the cover sheet K around the sheet bundle Sa.

  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 drive unit (not shown) in the raised state of the cover sheet exterior unit 80 shown in FIG. The gripping member 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 bent from the side edge portion of the glue application surface of the sheet bundle Sa (see FIG. 11B).

  Thereafter, the pair of bending members 86 moves in the horizontal direction toward the glue application surface side of the sheet bundle Sa, presses and shapes both side surfaces of the sheet bundle Sa, and forms the booklet Sb.

<Ejection of booklet>
FIG. 13 is a front view showing the discharge process of the booklet Sb composed of the sheet bundle Sa and the cover K.

  After the cover sheet K folding process is finished, the cover cover exterior means 80 is lowered by the lowering drive of the belt 85.

  After the cover sheet K folding process is completed, the cover cover exterior member 80 is lowered and retracted by the lowering drive of the belt 85, and then the cover support member 106 swings to lift a part of the cover sheet K (see FIG. 13A). ).

  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 bonded descends, so that the lower end of the sheet bundle Sa contacts the discharge belt 101 and is slid in the transport direction by the discharge belt 101. (See FIG. 13B).

  The booklet Sb in which the cover sheet K is bonded to the sheet bundle Sa is placed on the surface of the rotating discharge belt 101, conveyed, and discharged outside the apparatus (see FIG. 13C).

  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.

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. 4 is a plan view, a side view, and a front view of an aligning unit and a discharge belt attached to the aligning unit. The top view of the drive means of an alignment means. Sectional drawing of a bookbinding apparatus which shows the paste application | coating process process to a paper bundle. The top view of a paste application means. The side view of a glue application means and a holding means. The perspective view of an adhesive application means and a holding means. Sectional drawing of a bookbinding apparatus which shows the process of adhering a cover sheet to a sheet bundle. FIG. 5 is a cross-sectional view of a cover cover means and a sheet bundle showing a cover folding process. The perspective view of the paper bundle which stuck the cover, and the perspective view of the booklet produced by folding the cover on the paper bundle. 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 conveyance means 20 Paper discharge means 30 Paper bundle accommodation means 31 Conveyance path switching means 37 Paper mounting base 38 Paper rear end positioning member 39 Paper width alignment member 40 Paper bundle conveyance means 41 Grip means 50 Glue application means 51 Glue application member ( Application roller)
53 glue container 54 moving body 60 cover sheet supply means 62 sheet feeding means 70 cover sheet cutting means 71 rotating blade 72 fixed blade 73 moving member 74 support member 80 cover sheet exterior means (case binding means)
81, 82 Conveying roller 83 Pressure member 84 Moving housing 85 Belt 86 Bending member 90 Alignment means 91A, 91B Alignment plates 92A, 92B Support member 93 Guide bar 100 Booklet transport means 101 Discharge belt 106 Cover sheet support member A Image forming apparatus K Cover N Paste S Paper Sa Paper bundle Sb Booklet

Claims (5)

In a bookbinding device that performs case binding on a bundle of sheets with a cover,
A cover provided on the cover covering means for carrying the cover covering means for placing the cover and moving the cover to a predetermined position where the cover is in contact with the sheet bundle, and carrying the booklet in which the sheet bundle is wrapped with the cover. Conveying means,
The bookbinding apparatus, wherein the booklet transport means is movable to positions corresponding to the inside and the outside of the booklet in the width direction orthogonal to the booklet transport direction. The bookbinding apparatus according to claim 1, wherein the booklet transport unit includes an alignment unit that positions the width direction of the cover before bookbinding. The booklet conveying means moves from the position corresponding to the outside of the booklet to the inside of the booklet when the cover exterior means moves up to the predetermined position and lowers a predetermined amount after joining the cover to the sheet bundle. The bookbinding apparatus according to claim 1, wherein the bookbinding apparatus moves to a corresponding position. The bookbinding apparatus according to any one of claims 1 to 3, wherein the booklet transport unit is configured to change a position corresponding to the inside of the booklet according to a size of the booklet. 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 4, which binds a sheet unloaded from the image forming apparatus main body. A featured image forming system.

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