JP2001328763A - Method and device for applying paste, gluing bookbinder and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gluing bookbinder in which improvement of the bookbinding finishing quality for a sheet bundle is achieved by positioning a sheet accurately and supplying paste uniformly, and miniaturization of the device is realized. SOLUTION: Before applying paste, the sheet S is conveyed being nipped by a conveying means consisting of drive rollers and driven rollers. After the sheet S is stopped temporarily and the press contact of the driven rollers is released, an alignment correcting plate 37 being in a retreating position is moved a prescribed amount in the direction orthogonal to the direction of a sheet conveying and a side end of the sheet S is abutted to an alignment reference plate 36 fixed on the side of paste application to correct a slant and offset of the sheet S generated during conveying. The side edge of the sheet is pressed by a press roller 391 whose end surface is placed on the outside of a sheet abutting surface of the alignment reference plate 36, and then the alignment correction plate 37 is retracted and the sheet S is conveyed to a paste applying area by the conveying means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for aligning an image-formed sheet discharged from an image forming apparatus main body and applying a band-like paste near the side edge of the sheet during sheet transport. Device, glue binding device with glue application device,
And an image forming apparatus provided with a glue binding apparatus.

[0002]

2. Description of the Related Art In recent years, there has been provided a glue binding apparatus which performs a gluing process on a predetermined position of a sheet on which an image is recorded by a main body of an image forming apparatus such as a copying machine, a printer, or a multifunction machine of the same to perform bookbinding. I have.

[0003] As a gluing processing device, (1) a device for discharging glue on paper using a glue discharge nozzle, (2) a glue wheel is set 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 is used.

The bookbinding apparatus described in Japanese Patent Publication No. 59-500907 deflects a sheet conveyed in a first direction in a second conveyance direction orthogonal to the conveyance direction, and thereafter, deflects the end of the running sheet. The glue is applied linearly to the portion, and after the stacking and alignment, pressure is applied to bookbinding.

[0005] The gluing method and apparatus described in Japanese Patent Application Laid-Open No. 7-80377 is to blow high-pressure air onto the glue discharged from the glue discharge nozzle to form a thin film.

[0006]

Problems to be Solved by the Invention The above-mentioned glue application device and glue binding device have the following problems.

Before the glue coating process, one side edge in the width direction of the paper is pressed by an alignment correcting member by the bending offset correcting means, and the other side edge of the paper is brought into contact with the alignment reference plate. When the alignment correction plate is retracted from the crimping position after the alignment, the paper may shift due to the rigidity of the paper.

In order to prevent the sheet deviation, the sheet correcting means disposed near the alignment reference plate is configured to retract the alignment correction plate from the pressure-bonding position while pressing the side edge of the sheet.

FIG. 14 is a cross-sectional view of a conventional sheet side edge and a sheet pressing means. FIG. 14A shows a state before the sheet pressing operation, and FIG. 14B shows a state at the time of sheet pressing.

The paper holding means 390 is connected to the alignment reference plate 360.
Is desirably placed near the edge of the sheet S and pressed near the end of the side edge of the sheet S. At the time of sheet alignment, the alignment correction plate 370 moves inward from the sheet width to press the side edges of the sheet. The side edge of the sheet S pressed against the alignment reference plate 360 by the alignment correction plate 370 may curl above the sheet lower guide plate 380. When the sheet pressing means 390 descends on the side edge of the curled sheet S and presses the side edge of the sheet S, the leading end of the sheet S may be broken.
The present invention solves the above problems, eliminates the folds and wrinkles of the side edges of the paper generated by the paper pressing means at the time of paper alignment, performs reliable glue application at a predetermined position on the paper, and performs image processing. It is an object of the present invention to provide a glue coating device, a glue binding device, and an image forming apparatus provided with the glue binding device, which achieve improved binding finish quality of a sheet bundle.

[0011] A perforation processing means for arbitrarily perforating a filing hole at a predetermined position of a paper regardless of the paper direction is incorporated in a glue binding apparatus so that a bookbinding in which perforation and glue application are simultaneously processed can be produced.

[0012]

Means for Solving the Problems (1) The above object is solved by a glue applying method according to claim 1 of the present invention or a glue applying apparatus according to claims 2 and 3.

(2) The above object is solved by a glue applying device according to claim 4 of the present invention.

(3) A glue binding apparatus according to the present invention is arranged such that the glue applying apparatus described in (1) or (2) above and a storage means for storing and aligning a plurality of sheets subjected to the glue application processing are aligned. And a paper discharging means for discharging and stacking the booklet produced by the gluing process.

(4) An image forming apparatus according to the present invention includes an image forming apparatus main body including an image writing unit, an image forming unit, a sheet conveying unit, and a fixing unit, and the glue binding apparatus according to the above (3). It is characterized by becoming.

[0016]

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

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, an automatic document feeder DF, and a glue binding apparatus C.

The main body A of the image forming apparatus includes a charging means 2, an image exposure means (writing means) 3, a developing means 4, a transfer means 5,
After the charge removing unit 6A, the separating claw 6B, and the cleaning unit 7 are arranged, and the surface of the photoreceptor 1 is uniformly charged by the charging unit 2, the image data read from the original by the laser beam of the image exposing unit 3 A latent image is formed by performing laser beam scanning based on the laser beam, 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 paper (transfer paper) S fed from the paper storage means 8A is sent to the transfer position. The toner image is transferred onto the sheet S by the transfer unit 5 at the transfer position. Thereafter, the charge on the back surface of the sheet S is erased by the charge removing means 6A, separated from the photoreceptor 1 by the separation claw 6B, transported by the intermediate transport section 8B, and subsequently heated and fixed by the fixing means 9 and then discharged by the discharge roller 8C. Is discharged.

When forming images on both sides of the sheet S,
The sheet S, which has been heated and fixed by the fixing unit 9, is branched from a normal sheet discharge path by the transfer path switching plate 8D, is switched back in the reverse transfer 8E, is turned over, and is discharged outside the apparatus by the sheet discharge roller 8C. You. Discharge roller 8C
Is discharged into the receiving section 11 of the glue binding apparatus C.

On the other hand, the developer remaining on the surface of the photoreceptor 1 after image processing is removed by the cleaning means 7 downstream of the separation claw 6B, and the surface is prepared for the next image formation.

At the top of the image forming apparatus main body A, an automatic document feeder DF of a document moving type (sheet through type) reading system is supported so as to be openable and closable. Automatic Document Feeder D
F has a one-sided original reading function and a two-sided original reading function.

The glue binding apparatus C includes an aligning and pressurizing means 50 in the upper part of the drawing, a glue applying means 40 and a sheet skew correcting means (hereinafter referred to as a sheet position correcting means) 30 in the middle part, and a sheet direction changing means in the lower part. 20, the cover paper feeding means 8 at the bottom
0s are arranged in tandem in a substantially vertical direction.

On the right side of the glue binding apparatus C in the figure, an entrance conveying means 10 and a folding means 70 are arranged. On the left side in the drawing of the glue binding apparatus C, there is disposed a paper discharging means 60 for stacking the bound book.

FIG. 2 is a configuration diagram showing a paper transport path of the glue binding apparatus C. FIG. 3 is a schematic diagram showing a process of gluing and binding the paper S.

In the glue binding apparatus C, the receiving section 11 of the entrance section conveying means 10 is provided with the discharge roller 8 of the image forming apparatus main body A.
It is installed at a position and height that match C.

The transport path of the paper S connected to the receiving section 11 is formed by an upper paper transport path 12 to the uppermost fixed discharge tray 15.
The sheet S is fed to any one of the transport paths depending on the selection of the angle occupied by the switching gate G1.

The upper paper transport path 12 is provided with transport rollers 13
A, 13B, and 13C, a discharge roller 14, a guide plate, and the like. The lower paper transport path 16 is provided with transport rollers 17A,
17B, 17C, a switching gate G2, a guide plate and the like.

The paper transporting path connected to the lower paper transporting path 16 is branched into two systems, that is, a middle paper direction changing means 20 and a lowermost folding means 70, and selects an angle occupied by the switching gate G2. The sheet S is fed to one of the transport paths.

(1) Discharge Directly to Fixed Discharge Tray 15 at the Top of the Apparatus The sheet S on which an image has been formed discharged from the image forming apparatus main body A is introduced into the receiving section 11 and passes through the sheet transport path 12. The sheet is conveyed by the conveying rollers 13A, 13B, 13C and the guide plate, is sandwiched by the discharge rollers 14, is discharged onto the fixed sheet discharge tray 15 on the upper outside of the apparatus, and is sequentially stacked.

In the paper transport process, the switching gate G
1 is oscillated by the driving of the solenoid, and
Is closed, the sheet transport path 12 is opened, and the sheet S can pass through the fixed sheet discharge tray 15.

(2) 90 ° Rotation of Paper When this paper rotation mode is set, the switching gate G
Reference numeral 2 denotes a state in which the solenoid is off, the sheet transport path 18B is closed, the sheet transport path 18A is kept open, and the sheet S can pass through the sheet transport path 18A.

The image-formed sheet S discharged from the image forming apparatus main body A is supplied to the receiving section 11, the sheet transport path 16,
After passing through the conveying rollers 17A and 17B, the switching gate G
2, the sheet is deflected in a substantially right-angle direction on the left side in the figure, is sandwiched by the transfer rollers 17 </ b> C, and is sent to the sheet direction conversion unit 20.

Sheet S introduced into sheet direction changing means 20
Pass through the paper transport path 200 opened above the switching gate G3, and are transported by the transport rollers 22A, 22B, 22C,
22D and the guide plate, and proceeds in the left direction shown by the arrow in the figure.

When the central portion of the paper S reaches the rotating member 23, the paper transport is temporarily stopped, and the transport rollers 22A, 22A
The pressure contact between B, 22C, and 22D is released, and the separated state is maintained. The transport rollers 22A, 22B, 22C, 22
In the state where the pressure contact of D is released, the upper and lower rotating disks 2 of the rotating member 23
3A and 23B rotate while pinching the paper S,
The direction of the sheet S is changed by 90 degrees. For example, A4 size paper S is converted by the rotating member 23 in the A4R direction.

The paper direction changing means 20 can simultaneously execute the 90-degree rotation of the paper S and the shifting process of the paper S.
Alternatively, the sheet direction conversion unit 20 can independently execute the 90-degree rotation of the sheet S and the sheet shift processing.

The paper S whose rotation direction has been changed is conveyed by the press-contact rotation of the conveyance rollers 22A, 22B, 22C and 22D, carried out of the paper direction conversion means 20, and guided by the conveyance rollers 24A and 24B and the guide plate. Is deflected upward in a direction substantially perpendicular to the drawing, passes through the switching gate G4, is further deflected rightward in the drawing, and is fed into the sheet position correcting means 30.

The paper S that does not require the glue binding process passes through the paper transport path on the left side of the switching gate G4 by the driving of the solenoid, and is transported by the transport rollers 61 and 62 and the guide plate. The sheet is discharged to the elevating sheet discharge tray 64 outside the apparatus.

(3) Skew deviation correction processing Sheet position correcting means 30 for correcting the skew deviation of the sheet S
Are transport rollers 31, which enable the sheet S to be pinched and released,
32, 33, 34, paper transport path 300, alignment reference plate 3
6, the alignment correction plate 37 and the punching means 35, the sheet S before the glue application processing is brought into contact with the alignment reference plate 36 to be aligned on one side, and a binding hole for filing is punched.

(4) Glue coating process on the paper S The paper S sent from the paper position correcting means 30 to the glue applying means 40 advances rightward as shown by the arrow. The thin film forming roller 42 of the glue applying means 40 and the paper transport path 300 of the paper position correcting means 30 are all formed substantially parallel to the paper transport path 200 of the paper direction converting means 20, and the transport direction of the paper S is changed in the paper direction. It is opposite to the conveying direction of the means 20.

The glue discharging means 41 stores glue supplied from a bag-shaped container (not shown), and discharges glue on one side edge of the running paper S in a band shape or intermittent broken line shape to form a glue coating portion N.
To form

The sheet S that has been subjected to the glue coating process is transported by the transport rollers 4.
The paper is nipped and conveyed by 3, 44, and 45, rises along the paper conveyance path 400 formed of a guide plate, is nipped by the discharge roller 46, and is discharged to the aligning and pressing means 50.

(5) Alignment and pressurization processing The first sheet S that is not subjected to the glue application processing is supplied to the gripper unit 5
1 and is placed at a predetermined position on a sheet storage means (hereinafter, referred to as a stacker) 52 with its leading end contacting a stopper 53. The gripper means 51 includes a rotating belt 5.
4 to move.

The second and subsequent sheets S that have been subjected to the glue coating process are:
Similarly, the paper is sandwiched by the gripper means 51 and is sequentially placed on the preceding paper S on the stacker 52 with the glue application section facing downward. Reference numeral 55 denotes a pair of width alignment members movable in the width direction, and regulates the width direction of the sheet S.

The pressing roller member 56 is configured to rotate the belt 5.
4 and moves together with the gripper means 51. The pressure roller member 56 moves while pressing the glued back side of the paper S, and ensures adhesion between the papers.

The pressing of the sheet S by the pressing roller member 56 may be performed each time the second or subsequent sheet S is placed on the stacker 52. Alternatively, the pressing process may be performed each time a plurality of sheets S are stacked.

Through the above-described steps, one bookbinding subjected to the gluing process is completed. In this glue binding apparatus C, a maximum of 200 sheets S can be glued and bound.

(6) Paper Bundle Loading A part of the paper loading surface of the stacker 52 is provided with a driving roller 57.
And a plurality of discharge belts 59 wound around driven rollers 58
Are rotatably arranged.

The last sheet of paper S is stacked on the stacker 52, pressed, and glued and bound. The sheet claw of the discharge belt 59 holds the trailing end of the sheet bundle. The sheet slides on the stacking surface of the stacker 52 and is nipped by the sheet ejection rollers 63 of the sheet ejection means 60 to move up and down the sheet ejection tray 64.
Discharged and loaded on top.

A sheet S that has been subjected to glue application processing and a sheet S that has not been subjected to glue application processing can be stacked in the elevating discharge tray 64, and a large amount of paper S can be accommodated by driving up and down.

(7) Cover Paper Feeding The cover paper feeding means 80 comprises a paper feeding cassette 81 and a paper feeding member 82. One cover sheet K fed from the sheet feed cassette 81 is fed to the feed path 83
4, the sheet is fed to the sheet direction changing means 20, passes through the sheet position correcting means 30, and is pasted on the upper or lower surface of the sheet bundle by the glue applying means 40 and the aligning and pressurizing means 50 to be bound and bound. .

Further, the first sheet fed from the sheet feeding cassette 81 is
The cover sheet K is diverged by a switching gate G5 via a paper feed path 83, fed into a folding unit 70 described later, is folded in half, passes through a conveying roller 84, and is fed to a sheet direction changing unit 20. Through the sheet position correcting means 30, the glue applying means 40, and the aligning and pressing means 50,
It can be glued and bound on a stack of paper.

(8) Folding Process The sheet S conveyed downward from the sheet conveying path 16 as shown in FIG.
The sheet is branched at the switching gate G2,
B is carried into the folding means 70. The folding means 70 includes folding rollers 71, 72, 73 and a transport path switching plate 74.
, The folded sheet S is folded in half,
Alternatively, a Z-folding process is performed. The folded sheet S joins the cover sheet feeding path by the switching gate G5, is sent to the sheet direction converting means 20 via the transport roller 84 and the switching gate G2, and further is fed to the sheet position correcting means 30. Then, the book is glued and bound via the glue applying means 40 and the aligning and pressing means 50.

FIG. 4 is a perspective view showing the glue application position on various types of paper S. FIG. 4A shows the glue application section N on the long side of the sheet S.
FIG. 4B is a diagram in which a glue applying portion N is formed on the short side of the sheet S, FIG. 4C is a diagram in which a glue applying portion N is formed on the folded sheet S, FIG. 4D is a diagram in which a glue application section N is formed on the sheet S that has been Z-folded.

(First Embodiment, Sheet Position Correcting Means 3
FIG. 5A is a plan view of the vicinity of the glue discharging means 41 of the paper position correcting means 30 and the glue applying means 40, and FIG. 5B is a front view. FIG. 6 is a sectional view of the sheet position correcting means 30.

The transport rollers 31 to 31 of the sheet position correcting means 30
Reference numeral 34 includes a drive roller disposed below the paper transport path 300 and a driven roller above the paper transport path 300. Each drive roller has substantially the same structure. Each driven roller also has substantially the same structure. The structure and operation of the transport roller 32 shown in FIG. 6 will be described below.

The driven roller 32B is rotatably supported at the tip of the swing lever 32D. The base of the swing lever 32D is fixed to a swing shaft 32F rotatably supported by a fixed support frame 32E. The oscillating shaft 32F is driven by a solenoid (not shown) to oscillate the oscillating lever 32D in the clockwise direction shown by the arrow, and to drive the driven roller 32B with the driving roller 32.
A is separated from the nip position with A.

The driven roller 32B is urged by a spring 32C and presses against the driving roller 32A when the solenoid is not driven.

In the sheet position correcting means 30, the upper and lower guide plates 38A and 38B constitute a pair of upper and lower guide plates which form the sheet transport path 300 through which the sheet S can pass. Between the driving roller 32A and the driven roller 32B, alignment means for correcting the skew of the sheet S is provided. The alignment means includes an alignment reference plate 36 and an alignment correction plate 37 which are arranged to face each other in the width direction of the sheet S orthogonal to the sheet transport direction.

The alignment reference plate 36 is fixed to the main body of the apparatus in parallel with the paper transport direction. Matching reference plate 36
Is to position the sheet S by bringing the sheet S into contact with a side end in the width direction of the sheet S. The alignment correction plate 37 is movable in a direction perpendicular to the paper transport direction according to the width size of the paper S, and is moved from a predetermined retreat position in a direction perpendicular to the paper transport direction by a driving unit (not shown). The side edge of the sheet S is pressed.

The width dimension of the alignment correction plate 37 parallel to the paper transport direction is set smaller than the width dimension of the alignment reference plate 36 parallel to the paper transport direction, and the center of the alignment correction plate 37 in the width direction is aligned. They are arranged line-symmetrically so as to match the center of the reference plate 36 in the width direction. Therefore, the alignment correction plate 37
Presses the vicinity of the center of the alignment reference plate 36 across the sheet S,
The sheet S is prevented from hitting the alignment reference plate 36, and the sheet S
Is brought into close contact with the matching reference plate 36.

The retracted position of the alignment correcting plate 37 is set to be different depending on the sheet length (sheet width) in the direction orthogonal to the sheet conveying direction of the sheet S to be conveyed. The alignment correction plate 37 presses the side end of the sheet S by 2 mm or more (for example, 5 mm) closer to the alignment reference plate 36 than the sheet width position of the sheet S to be conveyed.

A sheet pressing means 39 is disposed at an intermediate portion between the conveying rollers 32 and 33 and near the alignment reference plate 36. The paper pressing means 39 includes a shaft 393 disposed at a fixed position, and a swing lever 3 swingably supported by the shaft 393.
92, a pressing roller 391 rotatably supported at one end of the swing lever 392, and a solenoid 394 which engages with the other end of the swing lever 392 and swings the swing lever 392 about the shaft 393. ing. The pressing roller 391 is arranged near the center of the alignment reference plate 36.

When the solenoid 394 is driven, the swing lever 392 swings about the shaft 393, and the pressing roller 391 presses the upper surface side near the side edge of the sheet S in the sheet transport path 300. .

The surface portion of the lower guide plate 38A in contact with the pressing roller 391 of the paper pressing means 39 is
It is formed on a protruding surface 38C that protrudes so as to coincide with the extended surface of the paper holding surfaces 2 and 33. When the pressing roller 391 descends to pinch the sheet S, the pressing roller 391 presses against the protruding surface 38C via the sheet S, so that the sheet S pressed by the pressing roller 391 is conveyed by the transport rollers 32 and 3.
3, the paper S is not deformed because it is kept flush with the holding surface of the paper S.

Before applying the glue, the paper S is nipped and transported by transport rollers 31 to 34 comprising a drive roller and a driven roller, and temporarily stopped at a predetermined position between the lower guide plate 38A and the upper guide plate 38B. 32A and driven roller 32B
After the pressing of the drive roller 33A and the driven roller 33B is released, the alignment correcting plate 37 at the retracted position is moved by a predetermined amount corresponding to the sheet width in a direction orthogonal to the sheet conveying direction, and the side edge of the sheet S is moved. After the sheet S is brought into contact with the alignment reference plate 36 to correct the bend and deviation of the sheet S during conveyance and to align the glue application positions, the paper pressing means 39 disposed near the center of the alignment reference plate 36 is pressed. The alignment correction plate 37 is moved to the retracted position while the upper surface of the side edge of the sheet S is pressed by the roller 391. As a result, during the retraction operation of the alignment correcting plate 37, the occurrence of the skew and deviation due to the movement of the sheet S is prevented.

FIG. 7A is a plan view of the sheet position correcting means 30 near the sheet pressing means 39, and FIG. 7B is a front view. FIG. 8A is a cross-sectional view showing a state before the sheet pressing unit 39 presses the sheet, and FIG. 8B is a cross-sectional view showing a state where the sheet pressing unit 39 presses the sheet.

A portion near the center of the alignment reference plate 36 in the sheet transport direction is formed in a cutout portion 36a indicated by a broken line, and the pressing roller 391 can be lowered. The outer end surface 391a of the pressing roller 391 of the paper pressing means 39 is
It descends into the space of a.

The outer end surface 391a of the pressing roller 391 is
The distance Δ between the alignment reference plate 36 and the outer end surface 391a of the alignment reference plate 36 protruding from an extension of the sheet abutment surface 36b is set to 1 to 2 mm.

When a voltage is applied to the solenoid 394, the pressing roller 391 descends against the bias of the spring, and the sheet S placed on the upper surface of the protruding surface 38C of the lower guide plate 38A.
Press near the side edge of At the time of this pressing, the pressing roller 3
Since the outer end surface 391a of the sheet 91 is located outside the side edge of the sheet S, the pressing roller 391 sufficiently presses the side edge of the sheet S to press the upper side of the protruding surface 38C. Thereby, the side edges of the sheet S are flattened, and the alignment reference plate 3
6 is securely brought into contact with the sheet abutting surface 36b, and the side edge of the sheet S is
6 is eliminated.

(Second Embodiment, Perforating Unit 35) In the glue binding apparatus of the present invention, a perforating unit 35 for perforating a filing hole h in a sheet S is provided in a sheet position correcting unit 30. It is characterized by having.

FIG. 9 is a plan view showing various examples of the sheet S perforated by the perforating means 35. FIG. 9A shows an example in which holes h are punched in two places of the sheet S (two-hole file). FIG. 9B shows an example in which holes h are formed in three places of the sheet S (three-hole file). FIG. 9C shows the sheet S 4
An example in which a hole h is drilled at a location is shown (four-hole file). The intervals between the holes h are standardized. Also, paper S
The hole end surface distance e from the end surface c to the hole h can be arbitrarily set, but is generally 9 to 11 mm.

FIG. 10 is a sectional view of the sheet pressing means 39 and the punching means 35 provided in the sheet position correcting means 30, and FIG. 11 is a plan view.

The sheet S introduced into the perforating means 35 passes through the sheet conveying path 300 formed by the lower guide plate 38A and the upper guide plate 38B, is pressed against and held by the conveying rollers 31 to 34, and is conveyed in the conveying direction. At a predetermined position. Next, the pressure contact of the driven rollers 31B to 34B is released, and the alignment reference plate 36, the alignment correction plate 37, and the sheet pressing means 39 perform positioning of the sheet S in the width direction.

The sheet S in the stopped state after the sheet is positioned
Is perforated. A sensor PS for detecting the trailing edge of the sheet is provided at a predetermined position on the upstream side in the sheet conveying direction with respect to the conveying roller 32.
The control unit 90 detects a rear end of the sheet S passing through the sheet conveying path 300 and sends a signal to the control unit 90.

Two sets of punching means 35 are arranged at an intermediate position between the transport rollers 32 and 33.

The upper mechanism of the perforating means 35 includes an upper guide plate 3
8B, a punch 352 fitted to the inner peripheral surface of the punch holder 351 and supported so as to be able to move up and down, and a cam 353 for driving the punch 352 to move up and down.
And a cam shaft 354 that rotatably supports the cam 353. 355, the punch 352 is
3 is a spring that urges the cam surface.

The lower mechanism of the perforating means 35 includes a lower guide plate 3
Consists of a die 356 fixed to 8A. Dice 356
Fits into the punch 352 and punches a hole h in the sheet S.

The shaft end of the cam shaft 354 is connected to an electromagnetic clutch (not shown), a gear train, and a drive source. When the electromagnetic clutch is turned off, the drive transmission from the drive source is cut off,
The rotation of the cam shaft 354 is stopped, and the punch 352 is stopped at the top dead center.

FIG. 12 is a block diagram showing the control of the glue binding apparatus C. FIG. 13 is a timing chart of the sheet correcting process and the punching process. FIG. 13 is an example of conveyance of an A4R size sheet S having a sheet length of 297 mm in the sheet conveyance direction.

(1) Deceleration section: T1 transport rollers 31 to 34, punching means 35, alignment correction plate 37
The control unit 90 for controlling the driving of the sheet S temporarily stops the sheet S nipped and conveyed by the conveying rollers 31 to 34 at a predetermined position between the lower guide plate 38A and the upper guide plate 38B before applying the glue. The stop position is determined by the sheet size signal, the detection signal from the sheet trailing edge sensor PS1 and the timer 91.
Is set at a predetermined position. That is, after a lapse of a predetermined time t0 from the detection signal by the sheet trailing edge detection sensor PS1, the sheet conveyance by the conveyance rollers 31 to 34 starts to decelerate, the deceleration section T1 shown in the drawing, and the sheet S stops (time t1). ).

(2) Compression release section: T2 After the paper is stopped, the pressure application of the driven rollers 31B to 34B is released (time t2).

(3) Correction section: T3 After the pressure-bonding of the driven rollers 31B to 34B is released, the alignment correction plate 37 at the retreat position is moved by a predetermined amount in a direction orthogonal to the sheet conveying direction, and the side end of the sheet S is moved. Is brought into contact with the alignment reference plate 36 to correct the skew and deviation during the conveyance of the sheet S (time t3). After correcting the skew and deviation, the pressing roller 391 is lowered to press the upper surface near the side edge of the sheet S. In this sheet pressing state, the alignment correction plate 3
Evacuate 7.

(4) Crimping operation and perforation processing section: T4 After the correction of the deviation and deviation, the driven rollers 31B to 31B
At the same time as the press bonding of 4B is started, the punching process is performed by the punching means 35 (time t4).

(5) Acceleration section: T5 After the completion of the pressure bonding operation and the perforation processing, the driving of the transport rollers 31 to 34 is started and accelerated (time t5). Thereafter, the sheet S is transported at a predetermined constant speed.

(6) Conveyance of Glue Application Processing Unit The perforated sheet S is nipped and conveyed by conveyance rollers 31 to 34 and advances to the glue application means 40. When it is detected that the leading end of the sheet S has passed the sensor PS2 for detecting the leading end of the sheet, the paste discharge unit 41 starts discharging the paste after a predetermined time has elapsed from the generation of the detection signal. That is,
The control means 90 instructs driving of the electromagnetic valve of the glue discharging means 41.

The control of the glue discharging time by the glue discharging means 41 is determined by the length of the paper S in the transport direction and the paper transport speed by the transport rollers 31 to 34.

The second and subsequent succeeding sheets S are also conveyed through the sections T1 to T4.

The glue binding apparatus C of the present invention is connected to an image forming apparatus such as a copying machine, a printer, and a multifunction peripheral thereof. Desired digital processing is performed by the image forming apparatus,
After the processing such as single-sided recording, double-sided recording, and page editing, the discharged paper is subjected to accurate and efficient cover attaching, gluing, and punching by an image forming apparatus including the glue binding apparatus C of the present invention. It is bound.

It is also possible to form the glue binding apparatus C of the present invention as an independent apparatus and to glue and bind a sheet processed by another image forming apparatus.

[0091]

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

(1) With the glue applying apparatus and the glue applying method having the paper position correcting means according to the first to third aspects of the present invention, the side edges of the paper are prevented from being bent or damaged, and the paper is bent or misaligned. Has been corrected with high precision, and it has become possible to form the glue application portion very close to the side edge of the paper without the glue application portion during glue application protruding from the side edge of the paper. Thereby, the finishing quality as bookbinding is improved. That is, the binding (throat) when the booklet is spread is reduced as much as possible, and a bookbinding that is easy to read and has good handleability can be obtained.

(2) A filing hole is formed near the side edge of the sheet at the same time as the sheet alignment before the glue applying process by the glue applying apparatus provided with the perforating means according to the fourth aspect of the present invention. This improves the accuracy of the hole position from the side edge of the sheet. Further, by performing the sheet correction process and the punching process after the sheet direction conversion process, the punching process can be performed at any of the vertical position and the horizontal position of the sheet.

(3) With the glue binding apparatus according to the fifth aspect of the present invention, the paper that has been glued at a predetermined position of the paper is stored in the paper storage means, accurately positioned by the alignment means, and pressurized. The roll is pressed into contact with the glue application section, thereby improving the finishing quality of bookbinding.

(4) By connecting a glue binding apparatus to the image forming apparatus according to the sixth aspect of the present invention, it is possible to automatically and automatically bind a sheet conveyed at a high speed from the image forming apparatus. It is possible to process.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus, an automatic document feeder, and a glue binding apparatus.

FIG. 2 is a configuration diagram illustrating a sheet transport path of the glue binding apparatus.

FIG. 3 is a schematic diagram showing a process of gluing and binding to paper.

FIG. 4 is a perspective view showing a glue application position on various types of paper.

FIGS. 5A and 5B are a plan view and a front view in the vicinity of a glue discharging unit of a correcting unit and a glue applying unit.

FIG. 6 is a cross-sectional view of a correction unit.

FIGS. 7A and 7B are a plan view and a front view of a sheet position correcting unit near the sheet pressing unit. FIGS.

FIG. 8 is a cross-sectional view showing a state before and after the paper is pressed by the paper pressing means.

FIG. 9 is a plan view showing various examples of sheets punched by a punching unit.

FIG. 10 is a cross-sectional view of a sheet pressing unit and a punching unit provided in a sheet position correcting unit.

FIG. 11 is a plan view of a sheet pressing unit and a punching unit.

FIG. 12 is a block diagram illustrating control of the glue binding apparatus.

FIG. 13 is a timing chart of a paper correction process and a punching process.

FIG. 14 is a cross-sectional view of a conventional paper side edge portion and a paper pressing means.

[Explanation of symbols]

 30 sheet skew correction means (sheet position correction means) 300 sheet conveyance path 31, 32, 33, 34 conveyance rollers 31A, 32A, 33A, 34A drive rollers 31B, 32B, 33B, 34B driven rollers 35 punching means 352 punch 353 Cam 356 Dice 36 Alignment reference plate 36a Notch portion 36b Paper abutment surface 37 Alignment correction plate 38A Lower guide plate 38B Upper guide plate 38C Projecting surface 39 Paper pressing means 391 Press roller 391a Outer end face 40 Glue applying means 400 Paper transport path 41 Glue discharging means 50 Alignment and pressurizing means 90 Control means 91 Timer A Image forming apparatus main body C Glue binding apparatus N Glue coating section PS1 Sensor for detecting trailing edge of paper PS2 Sensor for detecting trailing edge of paper S Sheet T1 to T5 Section h hole

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mikihiko Yamakawa Konica Corporation, 2970, Ishikawacho, Hachioji-shi, Tokyo Inventor Katsunori Takahashi 2970, Ishikawacho, Hachioji-shi, Tokyo, Konica Corporation (72) Inventor Matsumoto Toshitaka 3-51-4 Kanamecho, Toshima-ku, Tokyo F-term (reference) 3F108 GA02 GA04 GB01 HA02 HA12

Claims (6)

[Claims] In a glue applying method for applying glue in the form of a line or a dot in the direction of paper transport in the vicinity of a side edge of a paper transported by a transport means, the paper is driven by a driving roller before the glue application process. After the sheet is nipped and conveyed by a conveying means composed of a driven roller, temporarily stopped and the pressure contact of the driven roller is released, the alignment correction plate at the retreat position is moved by a predetermined amount in a direction orthogonal to the sheet conveying direction, and the sheet After the side end of the roller is brought into contact with the alignment reference plate fixed to the glue application side to correct the bending and the deviation during the conveyance of the sheet, the roller end surface is located outside the sheet abutting surface of the alignment reference plate. A glue applying method, comprising: pressing a paper side edge by an arranged pressing roller, retracting the alignment correction plate, and transporting the paper to a glue applying unit by the transport unit. 2. A glue applying device for applying glue in the form of a line or a dot in the paper transporting direction by a glue discharging device in the vicinity of a side edge of a paper transported by a transporting device, comprising: a driving roller for transporting the paper; Conveying means consisting of a driven roller, a pair of upper and lower guide plates allowing passage of the sheet, and a fixed position for positioning the sheet by abutting one side end parallel to the side end of the sheet. A matching reference plate, an alignment correcting plate that moves from a predetermined retreat position in a direction orthogonal to the sheet conveying direction and presses the other side end of the sheet, and a roller that is outside the sheet abutting surface of the matching reference plate. A pressing means for pressing and releasing a pressing roller having an end face near the side edge of the paper, a pressing means for releasing the paper, and a control means for controlling the driving of the conveying means, the alignment correcting plate, and the pressing means, And the control means comprises: Before the glue coating process, the sheet is nipped and conveyed by the conveying means, temporarily stopped and the pressure contact of the driven roller is released, and then the alignment correction plate at the retreat position is moved in a direction orthogonal to the sheet conveying direction. After moving by a predetermined amount, the side end of the paper is brought into contact with the alignment reference plate fixed to the glue application side, and the bending and the deviation during the transport of the paper are corrected, and then the paper is abutted against the alignment reference plate. A glue coating device, wherein the alignment correction plate is retracted after pressing a side edge of the sheet with a pressing roller disposed outside the surface. 3. An alignment correcting plate of the sheet position correcting means,
3. The glue coating device according to claim 2, wherein a side edge of the paper is pressed by 2 mm or more toward the alignment reference plate from a paper length position in a direction orthogonal to the paper transport direction of the paper to be transported. . 4. A sheet discharged from the image forming apparatus is 90
Paper rotation means to perform the rotation and shift processes, and temporarily stop the paper before the glue application process, release the pressure contact between the drive roller and the driven roller, and then move the alignment correction plate at the retreat position perpendicular to the paper transport direction. Paper position correcting means for moving the paper by a predetermined amount in the direction in which the paper is transported, bringing the side end of the paper into contact with an alignment reference plate fixed to the glue-applied side, and correcting the bend and deviation during transport of the paper; And a glue applying means for applying glue in a linear or dot-like manner in the paper transport direction by the glue discharging means near the side edge of the paper. A glue coating device provided with a perforating means for making the paste. 5. A glue application device having the paper position correcting means according to claim 2, and a storage means for storing and aligning a plurality of papers subjected to the glue application processing. A glue binding apparatus comprising: a pressurizing means for pressing a plurality of sheets; and a paper discharging means for discharging and stacking a booklet prepared by performing a gluing process. 6. An image forming apparatus comprising: an image forming apparatus main body including an image writing unit, an image forming unit, a sheet conveying unit, and a fixing unit; and the glue binding apparatus according to claim 5.