JP2002331774A - Gumming bookbinding method, gumming bookbinding device and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gumming bookbinding device for forming a paste coating surface on a paper for a cover, to which the back part of a paper bundle is bonded, within a short period of time upon producing wrapping bookbinding. SOLUTION: The gumming bookbinding device is provided with a first transfer means 30B for transferring reciprocally a front cover Ka into a paper transferring direction, a paste discharging unit 80B having a plurality of paste discharging means installed by changing the phases thereof into a direction orthogonal to the transferring direction of the front cover Ka through the first transfer means 30B, a second transfer means 20B for moving the front cover Ka into a direction orthogonal to the transferring direction of paper and a control means for controlling a timing of discharging paste out of the plurality of paste discharging means of the paste discharging unit 80B and the transfer of the first transfer means 30B as well as the movement of the second transfer means 20B to form a paste coating surface part, parallel to the transferring direction of the paper, on a predetermined area of the front cover Ka, which is opposed to the back part of the paper bundle Sa.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of applying book-form glue to a sheet on which image forming processing has been performed, in the vicinity of a side edge of the sheet, and covering the spine of the sheet bundle and its vicinity with a cover. More particularly, the present invention relates to a glue binding apparatus suitable for being connected to an image forming apparatus such as a copying machine, a facsimile apparatus, a printer, or the like online, or incorporated in the image forming apparatus.

[0002]

2. Description of the Related Art Generally, paper on which an image is recorded by a main body of an image forming apparatus such as a copying machine, a facsimile machine, a printer, and a multifunction peripheral thereof is subjected to post-processing such as punching, stapling, and saddle stitching. Various processes such as folding, attaching a cover, folding, stamping, and glue binding are performed.

[0003] As the glue binding apparatus, (1) a device that discharges glue onto paper using a glue discharge nozzle, (2) a glue wheel is installed in a glue storage box, and glue is attached to the outer periphery of the rotating glue wheel. Device that makes the outer periphery of the glue wheel contact the paper to transfer
(3) a hot melt coating device that discharges a mixture of a hot melt agent (heat fusing agent) and heated compressed air from a nozzle;
(4) a tape sticking device for sticking one side edge of a sheet bundle while heating a tape to which adhesive paste is applied in advance;
Etc. are used.

The gluing method and apparatus described in Japanese Patent Application Laid-Open No. 7-80377 is to blow high-pressure air onto glue discharged from a glue discharging nozzle to form a thin film.

[0005] The bookbinding apparatus described in JP-T-59-500907 deflects a sheet conveyed in a first direction in a second conveyance direction orthogonal to the conveyance direction, and then deflects the end of the traveling sheet. The glue is applied linearly to the portion, and after the stacking and alignment, pressure is applied to bookbinding.

As the bookbinding method using a backside tape, there is a method in which a tape on which adhesive having adhesive property is applied before heating is applied while heating or a tape on which adhesive having adhesive property is applied in advance containing water is used. It has been known.

[0007] A conventional tape sticking method is disclosed in
No. 284795, U.S. Pat. No. 4,985,729, JP-A-3-151286, JP-A-6-1
No. 15,275, and the like.

[0008]

The conventional glue binding apparatus has the following problems.

(1) In the backside tape bonding method, a tape is stuck on the spine of a sheet bundle and then folded on the front cover side and the back cover side. If the tape can be attached with high reliability, the structure of the device becomes complicated and the device becomes large.

(2) The method of wrapping a sheet bundle and bonding the back side of the sheet bundle with the front cover and the back cover integrated with the front cover requires a cover length corresponding to the maximum thickness of the sheet bundle. It is necessary to use a special large-sized cover sheet and, after bonding the cover sheet, a step of cutting and removing an extra cover part protruding from the sheet bundle.

(3) A glue binding apparatus for producing a high-quality bookbinding by aligning a sheet bundle, a front cover, and a back cover at high speed and accurately is complicated and large in size.

(4) In a glue binding apparatus in which glue is discharged from the glue discharging means to form a glue application portion on the cover paper and wrap around the back of the paper bundle and bond the glue, the glue is discharged onto the reciprocating cover paper. When forming the glue application surface by means,
It takes a long time to reciprocate the cover paper repeatedly, and the completion time of the glue binding becomes long. Further, at the end of the glue coating process, the glue first applied is solidified, so that uniform glue adhesive strength cannot be obtained, and the adhesive portion is damaged when the back of the sheet bundle is sufficiently opened, thereby lowering the finished quality.

(5) A sheet bundle producing mechanism for conveying and stacking the sheets coated with the glue and pressing the glue application portion of the sheet to form a bundle of sheets, a front side, a back side and a back side of the sheet bundle. And a case binding production mechanism that wraps and attaches them with the cover in an integrated glue binding device.If the glue application time on the cover paper is long, a waiting time occurs in the glue binding process, and the Is reduced. In particular, when performing case binding on a sheet discharged from an image forming apparatus capable of high-speed processing, high-speed productivity of the image forming apparatus is impaired.

The present invention solves the above-mentioned problems, improves a glue binding apparatus, realizes simplification of the apparatus configuration and simplification of control, and improves the finishing quality of bookbinding and the productivity of high-speed processing. It is an object of the present invention to provide a glue binding method and a glue binding device that maintain the above.

[0015]

The above objects can be attained by the following glue binding method and glue binding apparatus of the present invention.

(1) A glue application section is formed on the surface of the cover sheet by the glue discharging means while the cover sheet is being transported by the transport means.
In a glue binding method in which the cover sheet and the glued sheet bundle are stacked on a sheet mounting table, and the back of the sheet bundle is wrapped and adhered by the glue-coated cover sheet, the glue discharging unit includes It has a plurality of glue discharge nozzles installed with their phases changed in a direction orthogonal to the cover paper transport direction, and the glue is simultaneously discharged from the plurality of glue discharge nozzles during the transport of the cover paper by the transport unit. Then, a plurality of parallel linear glue applying portions are simultaneously formed on the cover paper, and a glue applying surface portion is formed in a predetermined area of the cover paper.

(2) A linear glue applying section is formed on the paper surface by the first glue discharging means while the paper is being conveyed, the glued-coated paper is stacked and aligned, and the glue applying section of the paper is applied. A sheet bundle producing apparatus for forming a sheet bundle by applying pressure, and forming a glue applying section on the cover paper surface by a second glue discharging unit installed at a predetermined position while the cover sheet is being transported by the transport unit. A case binding apparatus that stacks the cover sheet and the sheet bundle on a mounting table and wraps and glues the back of the sheet bundle with the cover sheet that has been subjected to the glue coating process; First transport means for reciprocating the paper in the paper transport direction, second transport means for moving the cover sheet in a direction perpendicular to the paper transport direction, and a direction orthogonal to the transport direction of the cover sheet by the first transport means Change the phase to A glue discharging unit having a plurality of second glue discharging units installed in a predetermined position, a timing for discharging the glue from the plurality of glue discharging units of the glue discharging unit,
By controlling the conveyance of the conveyance means and the movement of the second conveyance means, a predetermined area of the cover sheet corresponding to the spine of the sheet bundle is provided with a glue application surface section including a plurality of glue application sections parallel to the paper conveyance direction. A gluing bookbinding apparatus, comprising: a control unit for forming.

(3) A glue application section is formed on the cover paper surface by the glue discharging means while the cover paper is being transported by the transport means,
In a glue binding method in which the cover sheet and the glued sheet bundle are stacked on a sheet mounting table, and the back of the sheet bundle is wrapped and adhered by the glue-coated cover sheet, the glue discharging unit includes It has a glue discharge nozzle formed in an elongated opening in a direction perpendicular to the cover paper transport direction, and discharges the glue from the glue discharge nozzle during the transport of the cover paper by the transport unit. A glue binding method, wherein a band-shaped glue application section is formed on the cover paper, and a glue application surface portion parallel to a paper transport direction is formed in a predetermined area of the cover paper.

(4) A linear glue application section is formed on the paper surface by the first glue discharging means while the paper is being conveyed, and the paper subjected to the glue application processing is stacked and aligned. A sheet bundle producing apparatus for forming a sheet bundle by applying pressure, and forming a glue applying section on the cover sheet surface by a second glue discharging means while the cover sheet is being conveyed by the conveying means. And the sheet bundle are stacked, and the back of the sheet bundle is
And a case binding apparatus configured to wrap and bond with the cover sheet that has been subjected to the glue application processing.
A conveying unit, a second conveying unit for moving the cover sheet in a direction perpendicular to the sheet conveying direction, and an adhesive discharge nozzle having an opening shape elongated in a direction perpendicular to the conveying direction of the cover sheet by the first conveying unit. The second glue discharging means, the timing of discharging the glue from the glue discharging nozzle of the second glue discharging means, and the movement of the first transporting means and the movement of the second transporting means are controlled. Control means for forming a glue application surface portion parallel to the paper transport direction in a predetermined area of the cover paper corresponding to the spine portion.

(5) An image comprising: an image forming apparatus main body comprising an image writing means, an image forming means, and a paper conveying means; and the glue binding apparatus according to (2) or (4). Forming equipment.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a glue binding apparatus according to the present invention will be described with reference to the drawings.

[One Embodiment of Image Forming Apparatus] FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus main body A, an image reading apparatus B, a first glue binding apparatus C1, and a second glue binding apparatus C2. It is.

The main body A of the image forming apparatus includes a charging unit 2, an image exposure unit (writing unit) 3, a developing unit 4, and a transfer unit 5 around a rotating image carrier (hereinafter, referred to as a photosensitive member) 1.
A, the charge removing means 5B, the separating claw 5C, and the cleaning means 6 are arranged, and the surface of the photoreceptor 1 is uniformly charged by the charging means 2 and thereafter, the image read from the original by the laser beam of the image exposing means 3 A latent image is formed by performing exposure scanning based on the data, and the latent image is reversely developed by the developing unit 4 to form a toner image on the surface of the photoconductor 1.

On the other hand, the transfer paper (hereinafter referred to as paper) S fed from the paper storage means 7A is sent to the transfer position.
At the transfer position, the toner image is transferred onto the sheet S by the transfer unit 5A. After that, the paper S is discharged by the discharging means 5B.
As a result, the charge on the back surface is erased, separated from the photoreceptor 1 by the separation claw 5C, conveyed by the intermediate conveyance unit 7B, subsequently heated and fixed by the fixing unit 8, and discharged by the paper discharge roller 7C.

When forming images on both sides of the sheet S,
The sheet S, which has been heated and fixed by the fixing unit 8, is branched from the normal sheet discharge path by the transfer path switching plate 7D, is switched back in the reverse transfer unit 7E, is turned over, and is discharged out of the apparatus by the sheet discharge roller 7C. Is done. Paper discharge roller 7
The sheet S discharged from C is sent to the receiving unit 11 of the glue binding apparatus C.

On the other hand, the developer remaining on the surface of the photoreceptor 1 after the image processing is removed by the cleaning means 6 downstream of the separation claw 5C, and the surface is prepared for the next image formation.

On the upper part of the image forming apparatus main body A, an image reading apparatus B provided with an automatic document feeder of a document moving type reading system is installed.

[Gluing and Binding Apparatus] The gluing and binding apparatus includes a first gluing and binding apparatus C1 connected to the paper discharge unit side of the image forming apparatus main body A, a sheet discharge port of the first glue and binding apparatus C1, and a sheet bundle discharge. Second glue binding apparatus C2 connected to the outlet
Consisting of

[First glue binding apparatus C1] FIG.
1 is a front sectional view of a glue binding apparatus (sheet bundle producing apparatus) C1.

The first glue binding apparatus C1 comprises a direct discharge means 10 at the uppermost stage, a horizontal transport means 20A below it, a direction change transport means 30A, a paper storage section 40A, and a discharge means 50.
A, a paper transport device including a first paper supply unit (cover cover paper supply unit) 70A and a second paper supply unit (back cover paper supply unit) 70B;
And a first glue discharging means 80A and a glue supply device 89.

The sheet S introduced into the receiving section 11 is selected by the switching plate 12 to either the upper direct sheet discharging means 10 or the horizontal conveying means 20A.

The paper S introduced directly into the paper discharging means 10 is
The sheet is conveyed upward, is nipped by the conveying rollers 13 and 14, and is discharged onto the fixed sheet discharge tray 16 by the discharge roller 15.

When the shift mode or the non-sorted large-volume paper discharge mode is set, the switching plate 12 directly closes the transport path of the paper discharge means 10, opens the transport path of the horizontal transport means 20 A, and allows passage of the paper S. enable. Horizontal transfer means 20A
The paper S introduced into the transport rollers 21, 22, 23,
24. The sheet S that is not subjected to the glue application processing is nipped by the sheet discharge roller 26 and is introduced into a second glue binding apparatus C2 to be described later from the upper discharge port 27. Second
The paper S that has not been subjected to the glue application process and that has been introduced into the glue binding apparatus C2 is pinched and conveyed by the horizontal conveying means 20B, pinched by the discharge rollers 61, and lifted and lowered from the upper discharge port 62 to the elevating discharge tray 63 outside the machine. It is discharged upward (see FIG. 1). On the elevating sheet discharge tray 63, for example, a maximum of 3000 sheets S can be stacked. The shift process shifts the sheet S by a predetermined amount in a direction orthogonal to the transport rollers 21 to 24 by the rotation of the transport roller 31 of the direction changing transport unit 30A.

FIG. 3 is a side view of the first glue binding apparatus C1, FIG. 4 is a plan view, and FIG. 5 illustrates a paper transport path and a glue applying process during the glue applying process. It is a schematic perspective view.

Orthogonal U-turn conveyance of the sheet by the direction changing / conveying means 30A When the mode is set to the glue binding process, the sheet S discharged from the image forming apparatus main body A is driven by the motor M1 shown in FIG.
The sheet is nipped and conveyed by conveying rollers 21 to 24 driven and rotated by. The leading end of the sheet S is positioned by the positioning member 25.
, The skew of the sheet S is corrected, and positioning is performed in the transport direction (the first transport path X1 in the direction of the arrow in FIGS. 2, 4, and 5). Thereafter, the driving of the motor M1 is stopped, and the upper rollers of the transport rollers 21 to 24 are retracted upward from the sheet surface by a driving means (not shown) to release the pressure contact.

Further, the sheet S is nipped by conveying rollers 31 and 32 driven and rotated by a driving source (not shown),
The sheet is conveyed in the conveyance direction deflected by an angle (the second conveyance path Y1 in the direction indicated by the arrow in FIGS. 3 to 5). The paper S is continuously nipped by the transport rollers 33 and 34, transported in a U-turn, and sent to the paper storage unit 40A (third direction in the arrow direction in FIGS. 3 to 5).
Transport path Z).

(Process of Applying Glue to Sheet S) The first glue discharging means 80A is driven by the conveying rollers 31 to 34 so that the second conveying path Y
Glue is discharged in a linear or broken line shape on one side edge of the paper S traveling from the first transport path Z to the third transport path Z to form a glue application portion N on the upper surface of the paper S (see FIG. 7).

The first sheet S is not subjected to the glue coating process.
The sheet is nipped and transported by the transport rollers 33 and 34 of the direction changing transport unit 30A, sent to the fourth transport path Y2, and placed on the paper table 41A. The subsequent second and subsequent sheets S that have been subjected to the glue coating process are nipped by the transport rollers 33 and 34,
The sheet is conveyed and stacked on the preceding sheet.

(Glue discharging means) FIG. 6 shows the first glue discharging means 8.
0A and second glue discharging means 80B1, 80B2, 80B3
FIG. Note that the first glue discharging means 80A and the second
Since the glue discharging means 80B1 to 80B3 have the same configuration,
Hereinafter, the first glue discharging means 80A will be described as a representative.

The first glue discharging means 80A has a nozzle member 81 having an opening 81a for discharging glue, a movable needle member (hereinafter, referred to as a needle) 82 for opening and closing the opening 81a, and a needle 82 movable. The housing 83 includes a solenoid SL that drives the needle 82 so as to be movable, and the like.

The return spring 85 is inserted between the bottom of the housing 84 of the first glue discharging means 80A and the upper surface of the flange 82b, and presses the needle 82 downward. When the solenoid SL is not operated, the return spring 85 causes the needle 8 to move.
The second end 82 a closes the opening 81 a of the nozzle member 81.

When a voltage is applied to the solenoid SL, the plunger SLa is moved upward, the needle 82 directly connected to the plunger SLa is pulled up, and the opening 81a of the nozzle member 81 is opened to allow the paste to be discharged. Opening 8
The gap distance between the opening 1a and the tip portion 82a when opened is variable by the nozzle adjustment knob 86.

An inlet member 87 is fixed to the side surface of the casing 83, and feeds the glue supplied from the glue supply device 89 to the supply pipe 8
8 and is introduced into the glue accommodating chamber 83a.

(Glue Application Section) FIG. 7 is a plan view showing various types of glue application sections formed near the side edges of the sheet S. FIG.
(A) shows a continuous linear glue application section N. FIG.
(B) shows a linear glue application portion N formed on the short side of the paper S. The linear glue application section N firmly adheres between the sheets over the entire length near the side edge of the sheet S.

(Attaching Cover Paper) When attaching cover paper (cover and back cover) of the same size as the paper bundle Sa to the paper bundle Sa, the first glue binding apparatus C1 is attached to the lower part of the first glue binding apparatus C1. The cover sheet is supplied from the disposed first paper supply means 70A or the second paper supply means 70B.

The paper feed cassette 71 of the first paper feed means 70A
A, or the cover sheet stored in the paper feed cassette 71B of the second paper feed unit 70B is fed by the paper feed unit 72A or the paper feed unit 72B, passes through the transport rollers 73 and 74, and is fed by the horizontal transport unit 20A. After being transported, the direction changing transport means 3
After passing through 0A, it is fed into the paper storage unit 40A. In this cover paper transporting step, the cover Ka is removed by the first glue discharging means 80A.
As a result, the glue application section N is not formed, and is placed on the paper storage section 40A. Back cover K of the same shape as paper S and front cover Ka
b is attached to the uppermost surface of the sheet bundle Sa after the glue application section N is formed (see FIG. 5).

The paste used in the embodiment of the present invention is a water-soluble vinyl acetate resin emulsion paste, and has a viscosity of 750 to 1500 mPa · s at room temperature. The sheet bundle Sa adhered with the water-soluble glue can be reused as recycled paper.

(Loading, Alignment, and Pressing of Sheets S) (See FIGS. 3 and 5) The first sheet S on which the glue is not applied is nipped and conveyed by the driven and rotated conveying rollers 33 and 34. The sheet is conveyed to the fourth conveyance path Y2 and is placed on the sheet table 41A.
Subsequent second and subsequent sheets S that have been subjected to the glue coating process are nipped and conveyed by the conveying rollers 33 and 34, conveyed to the fourth conveying path Y2, and stacked on the preceding sheet S on the sheet mounting table 41A. .

That is, the leading end of the sheet S nipped and transported by the transport rollers 34 is gripped by gripping means (grippers) 43 held by the rotating endless belt 42, and the upper side of the sheet mounting table 41A is moved upward. The sheet is transported to the four transport path Y2. The pressing means 44 held by the moving gripping means 43 presses and moves the back side of the adhesive coating portion N forming surface of the preceding sheet bundle Sa placed on the sheet placing table 41A, and moves between the sheets. Ensure adhesion. The leading end of the sheet S gripped by the gripping means 43 contacts the leading edge stopper 45 and the leading edge is aligned. The leading end stopper 45 can be moved by a driving unit (not shown), and stops at a predetermined position according to the size setting of the sheet S.
The trailing end of the sheet S is movably driven by the sheet aligning and pressing means 46 to align the trailing end of the sheet and to press the upper surface of the trailing end of the sheet. Both ends of the sheet S are aligned with the width aligning means 4.
7 position. The alignment and positioning of the leading end, the trailing end, and both sides of the sheet S are performed before the pressing process by the pressing unit 44. The pressing process of the sheet S by the pressing unit 44 may be performed every time the second and subsequent sheets S are placed on the sheet placing table 41A. Alternatively, the pressing process may be performed each time a plurality of sheets S are stacked.

Through the above steps, one sheet bundle Sa that has been glued is completed. This first glue binding apparatus C1
Then, for example, a maximum of 200 sheets S can be glued and bound.

(Discharge from the first glue binding apparatus C1) A plurality of discharge belts 53 wound around a driving roller 51 and a driven roller 52 are provided on a part of the sheet stacking surface of the sheet mounting table 41A. It is arranged rotatably.

The final sheet Sn is stacked on the sheet mounting table 41A and pressed to form a sheet bundle Sa. The glued and bound sheet bundle Sa holds the rear end of the sheet bundle Sa by the discharge claw 53a of the discharge belt 53 rotated by the motor M2, and slides on the mounting surface of the sheet mounting table 41A.
The sheet is nipped by the sheet bundle discharge roller 54 and discharged from the lower discharge port 55 to the entrance of the second glue binding apparatus C2 (fifth transport path X2 in FIG. 5). Prior to the sheet discharging process, the pressing unit 44 and the width aligning unit 47 are retracted above the transport path by a driving unit (not shown).

[Second glue binding apparatus C2] The glue binding apparatus of the present invention is a first glue binding apparatus (sheet bundle producing apparatus) C1 for gluing and binding between sheets to produce a sheet bundle Sa.
And a second glue binding device (case binding making device) C2 for gluing and binding the front and back covers to the front and back and back of the sheet bundle Sa to produce the booklet Sb.

FIG. 8 is a schematic perspective view for explaining the paper transport path and the glue applying process in the first glue binding device C1 and the second glue binding device C2 during the glue applying process. FIG. 9 is a schematic perspective view showing a sheet transport path and a glue applying process of the second glue binding apparatus C2. FIG. 10 is a front sectional view of the second glue binding apparatus C2.

In these figures, a horizontal conveying means (second conveying means) 20B and a direction changing conveying means (first conveying means) 3 constituting a paper conveying path of the second glue binding apparatus C2.
0B, paper storage unit 40B, and second glue discharging means 80B1
To 80B3 are the horizontal conveying means 20A, the direction changing conveying means 30A of the first glue binding apparatus C1,
The members having the same functions as those of the first glue binding apparatus C1 are denoted by the same reference numerals because they have substantially the same configuration as the members forming the paper storage unit 40A and the first glue discharging unit 80A. Omitted.

The paper S not subjected to the glue binding process or the shifted paper S is transported by the horizontal transport means 20A and the horizontal transport means 20B, is sandwiched by the discharge rollers 61, and is discharged from the upper discharge port 62. External lifting tray 6
3 (see FIG. 1).

The sheet bundle Sa produced by the first gluing and binding apparatus C1 is conveyed by the discharging means 50A, discharged from the lower discharge port 55, and is discharged to the second gluing and binding apparatus C2.
And is conveyed by the discharge means 50B, discharged from the lower discharge port 65, and placed on the elevating discharge tray 63 outside the machine.

The mechanism of the case binding production function includes a horizontal transport unit 20B, a direction changing transport unit 30B, and a paper storage unit 40.
B, creasing roller 91, second glue discharging means 80B1
80B3, and first sheet feeding means (cover sheet feeding means) 70
A, a second paper feeding means (back cover paper feeding means) 70B is provided.
A plurality of second glue discharging units, for example, three second glue discharging units 80B1, 80B2, and 80B3 shown in the figure are unitized to form a glue discharging unit 80B.

Three second glue discharging means 80B1, 80B
2, 80B3 are installed with their phases changed in a direction perpendicular to the transport direction of the cover Ka. Second glue discharging means 80B
1 forms glue application sections N1 and N4 described later. The second glue discharging means 80B2 forms glue application sections N2 and N5. The second glue discharging means 80B3 forms glue application sections N3 and N6.

The creasing roller 91 is connected to the second conveying path Y1.
A first fold a is formed on the front cover Ka to be conveyed and conveyed, and the front cover Ka is folded into a loose V-shape to form a front cover part b and a spine part c having the same size as the paper S.

The first sheet feeding means 70A shown in FIG.
Paper feed cassette 71A for storing front cover Ka, paper feed unit 72
A. One cover sheet Ka fed from the sheet feeding cassette 71A by the sheet feeding section 72A rises while being nipped by the conveying rollers 73 and 74, and is moved upward by the horizontal conveying means 20A.
And the horizontal transfer means 2 of the second glue binding apparatus C2
0B, the first fold a is formed by the fold roller 91 via the direction changing conveyance means 30B, and the paper storage unit 4
0B.

The lower second sheet feeding means 70B shown in FIG.
Paper cassette 71B that accommodates back cover Kb, paper supply unit 72
B. One back cover Kb fed from the paper feed cassette 71B by the paper feed section 72B is nipped by the transport rollers 73 and 74 and rises, and the horizontal transport means 20A
And the horizontal transfer means 2 of the second glue binding apparatus C2
The paper is then fed into the paper storage unit 40B via the direction changing / conveying means 30B, and is stacked and bound on the upper surface of the paper bundle Sa.

FIG. 11 is a perspective view showing a step of gluing the front cover Ka and the back cover Kb to the sheet bundle Sa and performing case binding, FIGS. 12, 13, and 15 to 19.
FIGS. 21 and 22 are perspective views showing details of a glue case binding production process by the glue binding apparatus. Hereinafter, the glue case binding production process will be described.

(1) FIG. 12 is a perspective view showing a first creasing step in the second glue binding apparatus C2. The cover Ka, which is conveyed by the conveying roller 32B in the direction Y1A indicated by the white arrow on the second conveying path Y1, is subjected to the first fold a by the pair of fold rollers 91,
It is bent into a loose V-shape to form a cover surface portion b and a spine portion c having the same size as the paper S (see FIG. 11A).

(2) FIG. 13 (a) shows a glue applying unit N1, a glue applying unit N1 on a cover Ka by a glue discharging unit 80B including a plurality of second glue discharging means 80B1, 80B2, 80B3.
It is a schematic perspective view which shows the process of forming the paste application surface part Nx1 which consists of N2 and N3. FIG. 13B shows the glue application units N4, N5, and G5 on the front cover Ka by the glue discharge unit 80B.
It is a schematic perspective view which shows the process of forming the paste application surface part Nx2 which consists of N6. FIG. 14 is a plan view of the glue discharge unit 80B and a plan view of the cover Ka on which the glue application surface portions Nx1 and Nx2 are formed.

The transport roller 32 of the direction changing transport means 30B
B is rotated in the reverse direction, and the cover Ka is conveyed in the reverse direction in the Y1B direction of the white arrow in the upstream direction of the second conveyance path Y1. In the step of transporting the cover Ka in the Y1B direction, the plurality of second glue discharging units 80B1 and 80B of the glue discharging unit 80B are provided.
2, 80B3, the glue is ejected, and a plurality of linear glue application portions N1 to N2 parallel to the second fold d are provided near the second fold d on the surface of the spine portion c of the front cover Ka. A glue application surface portion Nx1 made of N3 is formed (see FIG. 13A).

Next, the transport roller of the horizontal transport means 20B is driven to rotate, the cover Ka is moved in the X1A direction indicated by a white arrow orthogonal to the Y1B direction, and the transport roller 32B is switched to the forward rotation to thereby rotate the cover Ka. Is transported in the Y1A direction. In the step of transporting the cover Ka in the Y1A direction, the second glue discharging unit 80B of the glue discharging unit 80B is used.
The glue discharged from 1, 80B2, 80B3 is the cover Ka
Next, a glue application surface portion Nx2 composed of a plurality of linear glue application portions N4 to N6 is formed adjacent to the glue application surface portion Nx1 (see FIG. 11 (2) and FIG. 13 (b)).

The total width of the glue application surface portions Nx1 and Nx2 is set to be wider than the width of the back of the bundle of sheets Sa to be glued and bound, that is, the distance between the first fold a and the second fold d.
The setting is made by the control means 9 controlling the number of movements of the glue discharge unit 80B and the number of reciprocations of the cover Ka. Further, the control means 9 controls the solenoids S of the second glue discharging means 80B1, 80B2, 80B3 so that both ends of the glue application sections N1 to N6 substantially coincide with the vicinity of both ends of the cover Ka.
The driving of L is controlled.

The plurality of glue application portions N1, N2,... Formed on the glue application surface portions Nx1, Nx2 of the front cover Ka are closely adhered to the respective end portions of the back of the bundle of sheets Sa, and Adhesion between Ka and the back of the sheet bundle Sa is performed uniformly and reliably, and the appearance of the bookbinding back is good. Further, by applying a plurality of glue applying portions N1, N2... To the cover Ka at predetermined intervals, sufficient adhesive strength can be obtained by forming a minimal glue applying portion, and the amount of glue consumed can be reduced. Savings.

FIG. 15 is a perspective view showing a reverse transport process of the cover Ka in the second glue binding apparatus C2.

The cover Ka on which the wide glue application surface portions Nx1 and Nx2 are formed is nipped by the transport roller 32B of the direction changing transport unit 30B and is once transported downward in the direction of the third transport path Z. The sheet is switched upward, transported upward, transported in the direction of the fourth transport path Y2, placed on the paper loading table 41B of the paper storage unit 40B with the spine portion c facing upward, and the width direction is adjusted by the paper alignment pressing means 46B. It is regulated and comes into contact with the front end stopper 45B and stops (see FIG. 9).

The paper storage unit 4 of the first glue binding apparatus C1
0A indicates that the preceding sheet bundle Sa is the second glue binding apparatus C2.
Then, the paper S discharged from the image forming apparatus main body A can be continuously placed in the paper storage unit 40A.

(3) FIG. 16 is a perspective view of the sheet bundle Sa placed on the front cover Ka. FIG. 17A is a perspective view showing a first folding step in the glue binding apparatus.

After the cover Ka is conveyed onto the paper placing table 41B and placed at a predetermined position, the first glue binding apparatus C1 is used.
Is bundled into the second glue binding apparatus C2, and the cover K on the paper storage unit 40B is introduced.
and is positioned by the sheet alignment pressing means 46B.

Next, the first folding means 93 supported at the retracted position below the paper placing table 41B rises, and the cover K
a, the backstrip portion c is pressed, and the backstrip portion c is bent substantially at a right angle along the first fold a to form a wide glue-applied surface portion formed on the surface of the backstrip portion c of the front cover Ka. Nx is adhered to the back of the sheet bundle Sa (see FIG. 11C).

(4) FIG. 17B is a perspective view showing a second folding step. FIG. 18 is a perspective view of the cover Ka in a state where it is bent at two right angles. After the front cover Ka is bent at a right angle, the second folding means 94 is advanced in the horizontal direction by the driving means to form a second fold d on the cover Ka, and to fold the cover Ka at a right angle to form a folded portion (FIG. 11).
(4)).

(5) FIG. 19A is a perspective view showing a sheet bundle pressing step in the glue binding apparatus. The second folding means 94 retracts and retracts to the initial position, the cover pressing member 92 descends, presses the upper surface side of the folded portion of the cover Ka, and presses the folded portion against the final sheet Sn of the sheet bundle Sa. Adhere (see FIG. 11 (5)).

When the cover cover Ka and the sheet bundle Sa are pressed by the cover pressing member 92, the glue application portion N of the paper S is rolled, the glue protrudes from the end of the paper, and is joined to the cover Ka.

(6) FIG. 19B is a perspective view showing a back cover placing step in the glue binding apparatus. The cover pressing member 92 is driven up and retracts upward. On the other hand, the second
The back cover Kb sent out by the paper feeding means 70B is transported in the first transport path X1 direction by the horizontal transport means 20A and 20B, the second transport path Y1 direction, the third transport path Z direction by the direction changing transport means 30B, and the After the conveyance in the direction of the four conveyance paths Y2, the paper is sent to the paper mounting table 41B with the glue application section N facing downward.

FIG. 20 is a partially enlarged sectional view of a sheet bundle Sa stacked on the sheet mounting table 41B. The second and subsequent sheets S on which the glue application section N is formed are stacked on the preceding paper S and the sheets are adhered to each other, and the back of the front cover Ka and the back of each sheet S are formed with a wide glue application surface Nx. It is adhered by.

The glue application section N is formed, and the paper placing table 41B
The back cover Kb sent to the upper side is
B presses the side edge of the back cover Kb to align the width,
It is placed on the uppermost layer of the sheet bundle Sa and the folded portion of the cover Ka, and is adhered to the back of the cover Ka (FIG. 11).
(6)).

(7) FIG. 21 is a perspective view showing a step of pressing the sheet bundle, the front cover, and the back cover. The upper surface of the joint surface between the folded portion of the front cover Ka and the back cover Kb is pressed by the cover pressing member 92 to strengthen the adhesion (see FIG. 11 (7)).

(8) FIG. 22 is a perspective view showing a step of discharging the booklet Sb. Lower the first folding means 93,
Retract to the lower initial position. Glued booklet S
b, the rear end of the booklet is held by the discharge claws 53Ba of the rotating discharge belt 53B, and is discharged onto the elevating discharge tray 63.
The sheets are stacked (fifth transport path X2 in the direction indicated by the arrow). (FIG. 11
(8)).

FIG. 23A is a perspective view showing the finish of case binding, and FIG. 23B is a perspective view showing the case binding with the back cover half opened.

(Discharge from Second Gluing and Binding Apparatus C2) Discharging means 60 on the side of the second gluing and binding apparatus C2
Is composed of an upper discharge roller 61, a lower discharge roller 64, an upper discharge port 62, a lower discharge port 65, and an elevating discharge tray 63.

From the upper discharge port 62, the shifted paper S that has not been subjected to the glue coating processing is discharged.
To be loaded. When the case binding production processing mode is selected in the operation unit of the image forming apparatus main body A, the sheet bundle Sa glued and bound by the first glue binding apparatus C1.
Is discharged by the discharging means 50A, is conveyed to the second glue binding apparatus C2, and is subjected to case binding production processing.
A booklet Sb is produced and discharged by the discharging means 50B.
From the lower outlet 65 of the second glue binding apparatus C2, the booklet S
b is discharged and stacked on the elevating sheet discharge tray 63.

In the elevating sheet discharge tray 63, a sheet S which is sandwiched between the discharge rollers 61 and discharged from the upper discharge port 62 and is not subjected to the glue coating process, and which is held between the discharge rollers 64 and the lower discharge port 6.
The sheet bundle Sa subjected to the glue coating process and the booklet Sb subjected to case binding discharged from the stack 5 can be stacked, and a large amount of sheets S, the sheet bundle Sa, and the booklet Sb can be accommodated by driving up and down.

When the non-case binding production processing mode is selected on the operation unit of the image forming apparatus main body A,
The sheet bundle Sa glued and bound by the first glue binding apparatus C1 is discharged from the lower discharge port 55 (see FIG. 2).
The sheet is conveyed to the sheet storage section 40B of the second glue binding apparatus C2, further ejected by the ejection means 50B, sandwiched by the ejection rollers 64, ejected from the lower ejection port 65, and stacked on the elevating ejection tray 63. (See FIG. 10).

[Another Embodiment of Second Glue Discharging Means] FIG. 2
4A is a cross-sectional view of the second glue discharging means 80C of this embodiment, and FIG. 24B is a bottom view of the second glue discharging means 80C. FIG. 25 is a plan view of the cover Ka on which the second glue discharging means 80C and the glue application surface portions Nx1 and Nx2 are formed. Note that, in the reference numerals used in these drawings, portions having the same functions as those in FIG. 6 are denoted by the same reference numerals. Further, points different from the above embodiment will be described.

The second glue discharging means 80C has a nozzle member 81 having a slit opening 81c for discharging a long and narrow glue. The distal end 82c of the needle 82 connected to the plunger SLa of the solenoid SL and capable of opening and closing the slit opening 81c of the nozzle member 81 has a slit opening 81c.
And discharges and shuts off the glue accommodated in the casing 83.

The slit opening 81c of the nozzle member 81
Has an elongated slit shape in a direction perpendicular to the transport direction of the cover sheet. Slit length m of slit opening 81c
Is 10 to 20 mm, slit width n is 0.5 to 1 mm
It is. The slit length m = 20 mm corresponds to the thickness of the back of the sheet bundle Sa of the front cover Ka to which about 50 sheets S are covered and bonded.

The transport roller 32 of the direction changing transport unit 30B
B is rotated in the reverse direction, and the cover Ka is conveyed in the reverse direction in the Y1B direction of the white arrow in the upstream direction of the second conveyance path Y1. In the step of transporting the cover Ka in the Y1B direction, the glue is discharged from the slit opening 81c of the second glue discharging means 80C,
One band-shaped glue application surface portion Nx1 is formed on the surface of the spine portion c of the front cover Ka.

Next, the transport roller of the horizontal transport means 20B is driven to rotate, and the cover Ka is moved in the X1A direction indicated by a white arrow orthogonal to the Y1B direction.
Is switched to forward rotation, and the front cover Ka is transported in the Y1A direction. In the step of transporting the cover Ka in the Y1A direction,
The glue discharged from the slit opening 81c of the second glue discharging means 80C forms a glue application surface portion Nx2 on the cover Ka adjacent to the glue application surface portion Nx1.

Glue-coated surface portion Nx formed on front cover Ka
1, Nx2 is the number of sheets S, that is, the sheet bundle Sa.
Is selected by the control means 9 according to the thickness of the back of the robot.

[Control of binding processing with case cover] FIG. 26
FIG. 3 is a block diagram illustrating control of the glue binding apparatus.

In the operation section of the image forming apparatus main body A, a cover case folding glue binding mode is set. Next, the number of sheets bundle Sa is set by a processing signal from the image reading device B or an external device. The control unit 9 controls the sheet bundle Sa
The application width of the glue application surface portion Nx is determined by the number of sheets.

The entire width of the glue application surface portion Nx is determined by the thickness of the sheet bundle Sa, that is, the number of sheets S. That is, the control means 9 causes the glue discharge unit 80B to move the glue discharge unit 80B so as to be wider than the interval between the first fold a, which is the width of the spine of the sheet bundle Sa to be glued and bound, and the second fold d. It is set by controlling the number of reciprocations of the cover Ka.

The control means 9 includes a plurality of glue application sections N1.
, N2,..., N6 so as to substantially coincide with the vicinity of both ends of the cover Ka.
The drive of each solenoid SL of B3 is controlled. The glue application length of the glue application surface portion Nx is controlled by setting the paper size, that is, the length of the paper S in the transport direction.

In accordance with the application width of the glue application surface portion Nx and the paper size, the control means 9 controls the reciprocating drive of the horizontal transport means 20B of the second glue binding apparatus C2 and the direction change transport means 3
OB is controlled.

The glue discharged from the glue discharging unit 80B by the reciprocating transport of the front cover Ka and the movement of the direction changing / transporting means 30B adheres the back of the sheet bundle on the surface of the spine portion c of the front cover Ka. The first fold a and the second fold a
To form a glue application surface portion Nx parallel to the fold line d.

[0101]

As is apparent from the above description, the following effects can be obtained by the glue binding method and the glue binding apparatus of the present invention.

(1) Since the time for reciprocating the cover sheet is reduced, the case binding is completed before the applied glue is dried and solidified, and the adhesion between the cover sheet and the back of the sheet bundle is uniform and reliable. In this case, the adhesive strength is improved.

(2) The image forming apparatus provided with the glue binding apparatus of the present invention can be applied to a sheet conveyed at a high speed from the image forming apparatus main body without deteriorating the high-speed productivity of the image forming apparatus main body. The glue binding apparatus including the bundle producing apparatus and the case binding producing apparatus makes it possible to perform high-quality and reliable bookbinding at a high speed.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus main body, an image reading device, a first glue binding device, and a second glue binding device.

FIG. 2 is a front sectional view of a first glue binding apparatus.

FIG. 3 is a side view of the first glue binding apparatus.

FIG. 4 is a plan view of a first glue binding apparatus.

FIG. 5 is a schematic perspective view illustrating a paper transport path and a glue application process during the glue application process.

FIG. 6 is a cross-sectional view of a first glue discharging unit and a second glue discharging unit.

FIG. 7 is a plan view showing various glue application sections formed near the side edge of the sheet.

FIG. 8 is a schematic perspective view illustrating a paper transport path and a glue applying process in a glue applying process in a first glue binding apparatus and a second glue binding apparatus.

FIG. 9 is a schematic perspective view showing a sheet transport path and a glue applying process of the second glue binding apparatus.

FIG. 10 is a front sectional view of a second glue binding apparatus.

FIG. 11 is a perspective view showing a step of gluing a front cover and a back cover to a sheet bundle and performing case binding;

FIG. 12 is a perspective view showing a first creasing step in the second glue binding apparatus.

FIG. 13 is a perspective view showing a glue application surface portion forming step in the second glue discharging means.

FIG. 14 is a plan view showing a glue application surface portion forming step in the second glue discharging means.

FIG. 15 is a perspective view showing a reverse cover transport process of the front cover in the second glue binding apparatus.

FIG. 16 is a perspective view showing a sheet bundle placed on a cover.

FIG. 17 shows a first folding step and a second folding step in the glue binding apparatus.
FIG. 4 is a perspective view showing a folding step.

FIG. 18 is a partial perspective view of the cover formed by the first folding step and the second folding step.

FIG. 19 is a perspective view showing a sheet bundle pressing step and a back cover placing step in the glue binding apparatus, and a perspective view of a cover on which a glue application surface portion including a plurality of glue application sections is formed.

FIG. 20 is a partially enlarged cross-sectional view of a sheet bundle stacked on a sheet mounting table.

FIG. 21 is a perspective view illustrating a pressing process of a sheet bundle, a front cover, and a back cover.

FIG. 22 is a perspective view showing a booklet discharging process.

FIG. 23 is a perspective view showing the finish of case binding, and a perspective view showing the case binding with the back cover half opened.

FIG. 24 is a cross-sectional view and a bottom view showing another embodiment of the second glue discharging means.

FIG. 25 is a plan view of a cover on which a glue discharging unit and a glue application surface are formed.

FIG. 26 is a block diagram showing control of the glue binding apparatus.

[Explanation of symbols]

9 Control Means 20B Horizontal Transport Means (Second Transport Means) 30B Direction Change Transport Means (First Transport Means) 31, 32, 32B, 33, 34 Transport Rollers 40A, 40B Paper Storage Units 41A, 41B Paper Placement Table 70A First Paper feeding means (cover cover paper feeding means) 70B Second paper feeding means (back cover paper feeding means) 80A First glue discharging means 80B Glue discharging unit 80B1, 80B2, 80B3, 80C Second glue discharging means 81 Nozzle member 81a Opening Part 81c Slit opening A Image forming apparatus main body C1 First glue binding apparatus (sheet bundle producing apparatus) C2 Second glue binding apparatus (case binding producing apparatus) Ka Front cover (cover sheet) Kb Back cover (cover sheet) N, N1, N2, N3, N4, N5, N6 Glue application part Nx, Nx1, Nx2 Glue application surface part S Transfer paper (paper) Sa Paper bundle ms Tsu door length n slit width

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65H 9/10 B65H 9/10 29/58 29/58 C 37/02 37/02 G03G 15/00 534 G03G 15/00 534 (72) Inventor Katsunori Takahashi 2970 Ishikawacho, Hachioji-shi, Tokyo Konica Corporation (72) Inventor Takenobu Kimura 2970 Ishikawacho, Hachioji-shi, Tokyo Konica Corporation (72) Inventor Satoshi Matsumoto High 3-51-4 Kanamecho, Toshima-ku, Tokyo F-term (reference) 2H072 AB06 CA01 CB01 GA09 HB07 JA02 3F049 AA10 DA12 EA24 LA16 LB03 3F053 CA06 CA21 LA00 LB03 3F102 AA09 AB01 BA10 BB02 DA06 EA14 3F108 GA10 GB01 HA02

Claims (7)

[Claims] 1. A glue application section is formed on a surface of a cover sheet by a glue discharging means while a cover sheet is being transported by a transport means, and the cover sheet and a glued sheet bundle are stacked on a paper placing table. In a glue binding method in which a spine of a sheet bundle is wrapped and adhered with a cover sheet that has been subjected to a glue coating process, the glue discharging unit includes a plurality of glue discharging units that are installed with a phase changed in a direction orthogonal to a transport direction of the cover sheet. Having a nozzle for transporting the cover paper by the transporting means,
It is possible to simultaneously discharge the glue from the plurality of glue discharging nozzles to simultaneously form a plurality of parallel linear glue coating portions on the cover paper, and to form a glue coating surface portion in a predetermined area of the cover paper. A glue binding method. 2. A linear glue application section is formed on a paper surface by a first glue discharging means during conveyance of the paper, and the glue-applied paper is stacked and aligned, and the glue application section of the paper is removed. A sheet bundle producing device for forming a sheet bundle by applying pressure and a glue applying section formed on the cover sheet surface by a second glue discharging unit installed at a predetermined position during the transport of the cover sheet by the transport unit. A case binding apparatus that stacks the cover sheet and the sheet bundle on a mounting table and wraps and adheres the spine of the sheet bundle with the cover sheet that has been subjected to the glue coating process; Transport means for reciprocating the cover paper in the paper transport direction, second transport means for moving the cover sheet in a direction perpendicular to the paper transport direction, and a cover in a direction perpendicular to the transport direction of the cover sheet by the first transport means. Installation with changing phase A paste discharging unit having a plurality of second paste discharging units, a timing at which the paste is discharged from the plurality of paste discharging units of the paste discharging unit, and a transfer of the first transfer unit and a movement of the second transfer unit. Control means for forming a glue application surface portion comprising a plurality of glue application portions parallel to the paper transport direction in a predetermined area of the cover paper corresponding to the spine of the paper bundle. Bookbinding equipment. 3. A plurality of glue discharging nozzles of the second glue discharging means are connected to a driving means, respectively, and enable glue discharging from a glue discharging nozzle selected from the plurality of glue discharging nozzles. 3. The glue binding apparatus according to claim 2, wherein: 4. A glue application section is formed on the surface of the cover sheet by the glue discharging means while the cover sheet is being transported by the transport means, and the cover sheet and the glued sheet bundle are stacked on a paper placing table. In a glue binding method in which a back portion of a sheet bundle is wrapped and adhered by a cover sheet that has been subjected to a glue coating process, the glue discharging unit includes a glue discharging unit formed in an elongated opening formed in a direction perpendicular to a transport direction of the cover sheet. A nozzle for discharging the paste from the paste discharge nozzle during the transfer of the cover sheet by the transfer means to form a band-shaped paste application portion on the cover sheet, and to a predetermined area of the cover sheet. A glue binding method comprising forming a glue application surface portion parallel to a paper transport direction. 5. A linear glue application section is formed on a paper surface by a first glue discharging means during conveyance of the paper, and the glue-coated paper is stacked and aligned, and the glue application section of the paper is removed. A sheet bundle producing apparatus for forming a sheet bundle by applying pressure, and forming a glue application section on the cover sheet surface by the second glue discharging means while the cover sheet is being transported by the transport means. A case binding apparatus that stacks the sheet bundle and wraps and glues the back of the sheet bundle with a cover sheet that has been coated with glue. A first conveying unit for moving the cover sheet in a direction perpendicular to the sheet conveying direction, and a glue discharging opening having a shape elongated in a direction perpendicular to the conveying direction of the cover sheet by the first conveying unit. With nozzle Controlling the second glue discharging means, the timing of discharging the glue from the glue discharging nozzle of the second glue discharging means, and the movement of the first conveying means and the movement of the second conveying means, to Control means for forming a glue application surface portion parallel to the paper transport direction in a predetermined area of the cover paper corresponding to the spine portion. 6. A predetermined area of the cover sheet corresponding to the spine of the sheet bundle includes: a vicinity of a first fold for folding the cover sheet along an edge of the spine of the sheet bundle on the front cover side; The glue binding apparatus according to claim 2 or 5, wherein the area is a region between the back fold of the sheet bundle and the vicinity of a second fold where the cover sheet is bent along an end on the back cover side. 7. An image forming apparatus comprising: an image forming apparatus main body including an image writing unit, an image forming unit, and a sheet conveying unit; and the glue binding apparatus according to claim 2 or 5.