JP4631614B2 - 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.

  In addition, recent electrophotographic image forming apparatuses have high-speed performance, multi-functions, network functions, etc., and their use as printing apparatuses has been expanded by connecting large-capacity paper feeders and large-capacity stackers. ing.

  When an image forming apparatus such as an electrophotographic system 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

  However, in the gluing bookbinding apparatus disclosed in Patent Literature 1 and Patent Literature 2, the boundary portion between the back cover and the front cover of the front cover glued to the sheet bundle and the boundary portion between the back cover and the back cover are accurately folded. The configuration is not always sufficient.

  Since the thickness of the paper bundle varies depending on the number of sheets, the amount of paper, etc., the position where the cover is folded differs depending on the thickness of the paper bundle. High quality folding is difficult unless the cover is folded at the same time, and the ridgeline at the boundary does not become a straight line or does not form a right angle.

  The present invention improves the bookbinding apparatus by eliminating the above-mentioned problems, and presses and folds the cover sheet evenly against the glued sheet bundle, thereby improving the finishing quality of case binding and the production of high-speed processing. It is an object of the present invention to provide an image forming system that enables the image quality.

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

(1) In a bookbinding apparatus for producing a booklet by carrying out a case binding process in which a cover is pasted on the back of a sheet bundle that has been subjected to glue application processing,
A first folding member that folds a boundary portion between the spine and the front cover of the cover that is attached to the back portion of the sheet bundle, and attaches the cover;
A second bent member that folds the boundary between the back cover and the back cover of the cover and attaches the cover;
First driving means for driving the first bending member;
Second driving means for driving the second bending member;
Have a, and control means for individually controlling the driving of the drive and the second drive means of said first driving means,
The control means controls each moving speed of the first bending member and the second bending member and at least one cover folding start position of the first bending member and the second bending member. A bookbinding apparatus characterized by:

(2) each cover folding start position of the said first bent member second bending member is characterized position der Rukoto equidistant from both sides in the thickness direction of the sheet bundle (1 ).

(3) the initial position of each bending member before at least one of moving the cover folding start positions of the first bending member and the second bending member, the case binding processing can be maximum thickness The bookbinding apparatus according to (1) or (2), wherein the bookbinding apparatus is located at an equal distance from both side surfaces in the thickness direction of the sheet bundle when the cover is attached to the back of the sheet bundle.

(4) has a detection means for detecting a thickness of the sheet bundle, wherein the control means, based on the detection result by said detecting means, from and controls the cover folding start position (1) The bookbinding apparatus according to any one of (3).

(5) It has a detecting means for detecting the thickness of the sheet bundle, and the control means controls the moving speed based on a detection result by the detecting means (1) to (4 ) The bookbinding apparatus according to any one of the above.

(6) The control means includes the first driving means and the first driving means so that the first bending member and the second bending member are simultaneously in contact with both side surfaces in the thickness direction of the sheet bundle to which the cover is attached. The bookbinding apparatus according to any one of (1) to (5), wherein the second bending member is individually controlled.

(7) The cover folding end positions of the first bending member and the second bending member are driven by the first bending member driven by the first driving means and the second driving means. The bookbinding according to any one of (1) to (6) , wherein the second bending member is a position for sandwiching both side surfaces in the thickness direction of the sheet bundle with a predetermined pressing force. apparatus.

(8) the image forming unit, the image forming apparatus main body having a paper conveying means, from integrating a sheet on which an image is formed by the image forming apparatus main body to the case binding process by sticking the cover to the sheet bundle (1) An image forming system comprising: the bookbinding apparatus according to any one of (7) .

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

(1) each moving speed of the first bending member and the second bent member, and the control of at least one of the cover folding start position of the first bending member and the second bending member This makes it possible to adjust the contact timing for the sheet bundle with the cover attached at the same time. As a result, it is possible to produce a high-quality booklet by folding the cover accurately. Also, according to the thickness of the sheet bundle, it is possible to perform a quick and accurate folding process, and each distance from the both side surfaces in the thickness direction of the booklet to the movement start position of each folding member is different. In addition, it can be brought into contact with both side surfaces at the same time, and rapid processing is possible.

(2) move the start positions of the first bending member and the second bending member, since the both sides in the thickness direction of the sheet bundle is positioned equidistant, first bending member and the second bending By starting the folding with the member abutting against the cover at the same time, a biased bias is not applied to the sheet bundle, and a high-quality booklet can be produced by an accurate folding process.

(3) the initial position of each bending member before at least one of the first bending member and the second bending member is moved to the start position folding cover is the back part of the sheet bundle of the case binding process can be maximum thickness In the case where the cover is attached to the paper sheet, the first folding member and the second folding member are provided at the same distance from both side surfaces in the thickness direction of the sheet bundle. by the start of the in fold bending at the same time from the initial position, it is possible to quickly start the folding process.

(4) It has a detection unit that detects the thickness of the sheet bundle, and controls the cover folding start position based on the detection result by the detection unit , so that an appropriate folding according to the detection result of the sheet bundle thickness is performed. Music processing becomes possible, and higher quality booklets can be produced .

(5) has a detection means for detecting the thickness of the sheet bundle on the basis of the detection result by the detecting means, by controlling the moving speed, the control of the movement speed in accordance with the detection result of the thickness of the sheet bundle This makes it possible to produce a higher quality booklet.

(6) The first driving means and the second bending member are arranged so that the first bending member and the second bending member are simultaneously in contact with both side surfaces in the thickness direction of the sheet bundle to which the cover is attached. By controlling individually, a high-quality booklet can be produced by an accurate folding process .

(7) The cover folding end positions of the first bending member and the second bending member are the first bending member driven by the first driving means and the second bending member driven by the second driving means. Is a position where both side surfaces in the thickness direction of the sheet bundle are sandwiched with a predetermined pressing force, and the first bundle member and the second folded member are in contact with the cover sheet evenly to bend the sheet bundle. it is not applied pressing the biased, no be booklet deformed is produced, it is possible to produce a high-quality booklet.

(8) By the image forming system in which the image forming apparatus is connected to the bookbinding apparatus of the present invention, the case binding process is performed on the image-formed paper carried out from the main body of the image forming apparatus at high speed, and automatically continuously It is possible to make a booklet and produce a desired booklet immediately on demand .

  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 into 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 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. Thereafter, the sheet bundle Sa is gripped by the gripping means 41 of the sheet bundle transporting means 40, and is swung so that the surface (back part) for applying the glue to the sheet bundle Sa is held downward while holding the sheet bundle Sa. Stopped in position.

<Glue application means 50>
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. A movable body 54 that can be supported and moved from the initial position on the back side of the bookbinding apparatus B to the glue application position on the front side, and a moving means (not shown) that reciprocates the movable body 54 are provided.

  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 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 adhesive container 53 containing the adhesive N is rotated by the motor M1 and the rotating means 52 of the adhesive application driving means. 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>
FIG. 6 is a cross-sectional view of the cover cutting means 70 and the cover exterior means 80.

  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 sheet cutting means 70 is a roller cutter unit including a rotary blade 71 and a fixed blade 72. The rotary blade 71 rotates while being in sliding contact with the fixed blade, and shears the cover K in the cover width direction. The scrap portion of the sheared cover sheet K falls and is stored in the waste box 73.

  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. In the operation unit 9 of the image forming apparatus A, when the paper size, the number of sheets, and the paper thickness are selected and set, or when detection is performed by each detection unit, and further information from an external device such as a computer is received, control is performed. The means sets a predetermined length for cutting the cover sheet K. The length of the cover sheet K before cutting is determined in advance corresponding to the maximum number of sheets.

<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.

  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 nipping position between the transport roller 81 and the driven roller 883 that are driven to rotate, and is further driven and rotated. Passes through the nipping position between the conveying roller 82 and the driven roller 893.

  The motor M2A of the second drive means swings and drives the cover sheet pressing member 88 via a drive transmission system Z1 composed of a belt and a gear train. The motor M2B as the second drive means 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 driven 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 driven 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 presses the transport roller 81 that rotates the driven roller 883. . At substantially the same time, the motor M2B starts to drive, swings the lever 892, and presses the driven roller 893 against the conveying roller 82 that rotates.

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

  FIG. 7 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 first drive means of the cover cover means 80, the cover press members 88 and 89 are shaken by the motor M3 of the first drive means. The cover K is pressed and held. 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.

  FIG. 8 is a cross-sectional view showing the upper limit position of the cover sheet exterior means 80.

  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.

<Driving member drive>
FIG. 9 is a cross-sectional view of the first bent member 86A and the second bent member 86B. FIG. 10 is a plan view showing driving means for the first bending member 86A and the second bending member 86B.

  The first bending member 86 </ b> A slides in contact with the pair of cams 111 and 112 arranged in the width direction of the cover sheet K and moves in a direction orthogonal to the width direction of the cover sheet K.

  A rotating shaft 113 of the cam 111 is rotated by a gear 114 connected to a driving source (not shown). The rotation by the gear 114 rotates the gear 116 via the belt 115 wound around the pulley, and rotates the gear 117 engaged with the gear 116. The gear 117 rotates the cam 112 fixed on the axis of the rotating shaft 118. The cams 111 and 112, the drive source, and the drive transmission means are referred to as first drive means.

  The first bending member 86 </ b> A slides in contact with the pair of cams 111 and 112 arranged in the width direction of the cover sheet K and moves in a direction orthogonal to the width direction of the cover sheet K. The stroke in the radial direction of the cams 111 and 112 is a distance L1 (for example, 15 mm) described later.

  The rotating shaft 123 of the cam 121 is rotated by a gear 124 connected to a driving source (not shown). The rotation by the gear 124 rotates the gear 126 via the belt 125 wound around the pulley, and rotates the gear 127 that meshes with the gear 126. The gear 127 rotates the cam 122 fixed on the rotation shaft 128. The cams 121 and 122, the drive source, and the drive transmission means are referred to as second drive means.

  The second bending member 86B slides in contact with the pair of cams 121 and 122 arranged in the width direction of the cover sheet K and moves in a direction orthogonal to the width direction of the cover sheet K. The stroke of the cams 121 and 122 in the radial direction is a distance L2 (for example, 45 mm) described later.

<Bending the cover>
FIG. 11 is a cross-sectional view showing the cover K folding process.

  FIG. 11A shows the initial position of cover cover folding. The sheet bundle Sa to which the glue has been applied is held by the fixed-side holding member 41A and the moving-side holding member 41B of the holding unit 41, and comes into contact with the cover sheet K placed on the cover cover exterior unit 80.

At this time, the cover sheet pressing surface XA of the first bending member 86A stands by at a position separated by a distance L1 (for example, 15 mm) from the sheet bundle gripping surface Y (hereinafter referred to as the reference plane Y) of the fixed-side gripping member 41A. ing. Further, the cover sheet pressure contact surface XB of the second bending member 86B stands by at a position separated from the reference surface Y of the fixed-side gripping member 41A by a distance L2 (for example, 45 mm). This distance L2 is a position separated by a distance L1 (for example, 15 mm) from the maximum thickness Tmax of the sheet bundle Sa capable of case binding processing. The maximum thickness Tmax corresponds to, for example, the thickness (for example, 30 mm) of the sheet bundle Sa in which about 300 sheets S of 80 g / m ² are bundled.

  FIG. 11B shows the cover folding start position. The sheet bundle Sa is gripped and lowered by the fixed gripping member 41A and the movable gripping member 41B, and the pressure member 83 is pressed down to stop at the folding start position. At this time, the second folding member 86B is moved by the rotating cams 121 and 122, and reaches the cover folding start position separated from the reference plane Y by a distance L3 (for example, 25 mm). This distance L3 is the sum (T + L1) of the sheet bundle thickness (for example, 10 mm) T and the above-mentioned distance L1 (for example, 15 mm). Therefore, the cover sheet pressing surface XA of the first bending member 86A and the cover sheet pressing surface XB of the second bending member 86B are located at equal distances (L1 = L4) from both side surfaces of the sheet bundle Sa.

  The sheet bundle thickness T is obtained by detecting the load current value of a motor (not shown) that drives the movable gripping member 41B when the movable gripping member 41B presses the sheet bundle Sa. Alternatively, the sheet bundle thickness T can be obtained by detecting the movement distance of the movement-side gripping member 41B with an encoder when the movement-side gripping member 41B presses the sheet bundle Sa.

  FIG. 11C shows a cover folding end position. When the second folding member 86B reaches the cover folding start position by the rotation of the cams 121 and 122, the cams 111 and 112 start to rotate, the first folding member 86A moves the distance L1, and the cover pressing surface XA One side surface of the sheet bundle Sa in contact with the reference surface Y is pressed through the cover sheet K. The second bending member 86B continues to move the distance L1 by the rotation of the cams 121 and 122, and presses the side surface of the sheet bundle Sa.

  The final position where the first bending member 86A and the second bending member 86B press and stop the sheet bundle Sa via the cover sheet K individually drives the first bending member 86A and the second bending member 86B. It is obtained by detecting the load current value of the motor (not shown) of the driving means that performs this. Alternatively, it is obtained by detecting the sheet bundle thickness T by the movement of the movable gripping member 41B.

  In the present embodiment, the first folding member 86A has the same initial position and cover folding start position. However, the present embodiment is not limited to this embodiment, and the first folding member 86A may also be configured to move a predetermined distance from the initial position to the cover folding start position. However, this configuration is preferable because it can be simplified in terms of configuration and control.

  Further, as another embodiment, the first bending member 86A and the second bending member 86B may be configured to start moving simultaneously from the initial position at different moving speeds according to the moving distances. .

  Further, in the present embodiment, after the second bending member 86B reaches the cover folding start position from the initial position, the movement of the second bending member 86B is continuously started. However, the second folding member 86B may also be a member that once stops at the cover folding start position and then resumes movement simultaneously with the start of movement of the first folding member 86A. Thereby, more accurate drive control becomes possible.

  Further, in the present embodiment, a single-sided reference format is used in which one of the front and rear surfaces of the sheet bundle is a reference surface, but the first folding member 86A is based on the center position in the thickness direction of the sheet bundle. And the second bent member 86B can be applied to an apparatus in which the moving distance from the initial position is equal in design. In such an apparatus, by controlling each bending member individually, it becomes possible to compensate for the difference in the movement distance that occurs during assembly or revelation.

<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 in which the sheet bundle Sa with glue pasted is bound and bound by the cover sheet K bent by the first bending member 86A, the second bending member 86B, and the pressure member 83. It is. FIG. 12C is a perspective view of the booklet Sb bound and bound.

<Ejection of booklet>
After the cover K folding process is completed, the cover cover exterior means 80 is lowered and retracted by the lowering drive of the belt 85 shown in FIG. By doing so, the lower end portion thereof is brought into contact with the discharge belt 101 and is slid in the transport direction by the discharge belt 101. The booklet Sb is placed on the surface of the rotating discharge belt 101 and conveyed, discharged outside the apparatus, and accommodated in the paper discharge apparatus C.

<Discharge device C>
The booklet Sb discharged by the discharge belt 101 is placed on the elevating paper discharge tray 103 of the paper discharge device C through the discharge opening 102 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.

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. Sectional drawing of a cover cutting means and a cover exterior means. Sectional drawing which shows just before the upper limit position of a cover exterior means. Sectional drawing which shows the upper limit position of a cover exterior means. Sectional drawing of a 1st bending member and a 2nd bending member. The top view which shows the drive means of a folding 1st bending member and a 2nd bending member. Sectional drawing which shows the bending process of a cover. The perspective view which shows the preparation process of a booklet.

Explanation of symbols

50 glue application means 60 cover supply means 70 cover cutting means 80 cover exterior means (case binding means)
81, 82 Conveying roller 83 Pressure member 84 Moving housing 85 Belt 86A First bending member 86B Second bending member 90 Alignment means 100 Booklet conveying means 111, 112, 121, 122 Cam 113, 118, 123, 128 Rotation Shaft 114, 116, 117, 124, 126, 127 Gear 115, 125 Belt A Image forming device B Bookbinding device C Paper discharge device K Cover L1, L2, L3 Distance S Paper Sa Paper bundle Sb Booklet T Paper bundle thickness Tmax Maximum Thickness XA, XB Cover cover pressure contact surface Y Paper bundle gripping surface (reference surface)

Claims (8)

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 first folding member that folds a boundary portion between the spine and the front cover of the cover that is attached to the back portion of the sheet bundle, and attaches the cover;
A second bent member that folds the boundary between the back cover and the back cover of the cover and attaches the cover;
First driving means for driving the first bending member;
Second driving means for driving the second bending member;
Have a, and control means for individually controlling the driving of the drive and the second drive means of said first driving means,
The control means controls each moving speed of the first bending member and the second bending member and at least one cover folding start position of the first bending member and the second bending member. A bookbinding apparatus characterized by: Wherein the first bending member each cover folding start position of the second bending member according to claim 1, wherein the position der Rukoto equidistant from both sides in the thickness direction of the sheet bundle Bookbinding equipment. The initial position of each bending member before at least one of moving the cover folding start positions of the first bending member and the second bending member, the sheet bundle of the case binding process can be maximum thickness The bookbinding apparatus according to claim 1 or 2, wherein the bookbinding apparatus is located at an equal distance from both side surfaces in the thickness direction of the sheet bundle when the cover is attached to the back . Has a detection means for detecting a thickness of the sheet bundle, wherein the control means, based on the detection result by the detection means, any of claims 1 to 3, wherein the controller controls the cover folding start position 2. The bookbinding apparatus according to item 1 . Has a detection means for detecting a thickness of the sheet bundle, wherein the control unit, the based on the detection result by the detecting means, any one of claims 1 to 4, wherein the controller controls the moving speed 1 The bookbinding apparatus according to item. The control means includes the first driving means and the second bending means so that the first folding member and the second folding member are simultaneously in contact with both side surfaces in the thickness direction of the sheet bundle to which the cover is attached . The bookbinding apparatus according to any one of claims 1 to 5, wherein the bending members are individually controlled. The cover folding end positions of the first folding member and the second folding member are the first folding member driven by the first driving means and the second folding driven by the second driving means. The bookbinding apparatus according to any one of claims 1 to 6 , wherein the bending member is a position that sandwiches both side surfaces of the sheet bundle in the thickness direction with a predetermined pressing force . Image forming means, both the image forming apparatus main body having a paper conveying means, claims 1 to case binding process by integrating the sheets with an image formed by the image forming apparatus main body is stuck to cover the sheet bundle 7 An image forming system comprising the bookbinding apparatus according to claim 1 .

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