JP2003089284A - Pasting bookbinding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a pamphlet having a quality responding to purpose or necessity by a method wherein a user can select either the desire for strengthen the bonding strength between papers or that for making the undulation of the papers smaller. SOLUTION: In a pasting bookbinding device C, in which band-like paste coating part N is formed by coating emulsion paste with a paste delivering means 80 near the side edge part of a paper S delivered from an image forming device A so as to adjust the pasted papers in order to produce a pamphlet Sa under pressure, when a paper undulation preventing mode is set in the operating part 9 of the image forming device A, the image forming device A forms a specified image T1 in advance near the side edge part of the paper or the paste coating part N and then the paste coating part N is formed by coating the emulsion paste on the specified image T1 of the paper S with the paste delivering means 80 of the pasting bookbinding device C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention forms a booklet by forming a band-shaped glue application portion near a side edge of a sheet of paper which has been subjected to image forming processing and which has been discharged from an image forming apparatus, while the sheet is being conveyed. A glue binding device.

[0002]

2. Description of the Related Art In recent years, there has been provided a gluing bookbinding apparatus for gluing a book 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 complex machine of these machines. There is.

The glue binding apparatus includes (1) a device for ejecting glue onto a sheet by using a glue ejection nozzle, (2) a glue wheel is installed in a glue storage box, and the glue is attached to the outer circumference of the rotating glue wheel. A device for contacting and transferring the outer periphery of the glue wheel to the paper,
(3) A hot melt coating device that discharges a mixture of a hot melt agent (heat fusion agent) and heated compressed air from a nozzle,
(4) A tape sticking device, which sticks a double-sided sticky tape to which adhesive paste is applied in advance to one side edge of a sheet bundle while heating, is used.

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

The bookbinding apparatus described in Japanese Patent Publication No. 59-500907 discloses that the sheet conveyed in the first direction is deflected in the second conveying direction orthogonal to the conveying direction, and thereafter, the edge of the traveling sheet is moved. The glue is linearly applied to the section, and after binding and alignment, pressure is applied to bind the book.

As a method for binding the back tape, a tape to which adhesive paste having adhesive property is previously applied is applied while being heated, or a tape to which adhesive paste having water adhesive property is previously applied is used. It has been known. The conventional tape application methods are disclosed in JP-A-62-284795, US Pat. No. 4,985,729 and JP-A-3.
It is disclosed in Japanese Patent Laid-Open No. 1511286.

[0007]

The conventional gluing bookbinding apparatus has the following problems.

(1) When papers are bonded with an emulsion paste, the water contained in the aqueous emulsion paste is
The paper is wavy due to being absorbed by the paper.
The degree of waviness of the paper is determined by the amount of water absorbed in the paper, but in order to obtain the adhesive force, the adhesive dissolved in the water between the fibers of the paper needs to be sufficiently absorbed in the paper. Therefore, it is difficult to satisfy the condition that the paper waviness is small and a sufficient adhesive force is obtained. Therefore, it is convenient to be able to change, depending on the conditions, whether importance is attached to less waviness or adhesion strength.

(2) In a gluing bookbinding apparatus using a vinyl acetate emulsion paste, a peculiar odor is generated from the vinyl acetate emulsion paste, which makes the surrounding environment unpleasant. In particular, in an office or the like in which an image forming apparatus equipped with a glue binding apparatus is installed, this unpleasant odor is a problem.

(3) When an adhesive paste is formed on the surface of the paper by ejecting the emulsion glue from the glue discharging nozzle of the glue discharging means, in order to uniformly apply a small amount of the emulsion glue to the paper surface, It is necessary to make the distance from the tip of the nozzle close. In particular, when the viscosity of the emulsion paste is several hundreds to 1,000 mPa · s, the emulsion paste tends to be a bead-like shape at the tip of the nozzle due to the interfacial tension, which makes uniform coating difficult.

(4) In a gluing bookbinding apparatus that uses a double-sided adhesive tape for adhering between sheets, if the double-sided adhesive tape is attached to each sheet, the adhesive portion becomes thicker by the thickness of the adhesive tape. As the number of sheets of paper increases, the difference in thickness between the adhesive portion and the non-adhesive portion becomes more noticeable, and the appearance of the finished booklet is impaired. For example, when 100 sheets of paper are adhered to form a booklet, when the thickness of one sheet of paper is 0.1 mm and the thickness of the double-sided adhesive tape is 0.6 mm, the double-sided adhesive tape is sandwiched for each sheet of paper. When you transfer in
The thickness of the bonded part is about 16 mm, and the thickness of the non-bonded part is 10 mm.
mm and 6 mm, resulting in a significant step, which deteriorates the appearance quality of the booklet.

It is an object of the present invention to solve the above problems and improve a gluing and binding apparatus to realize stabilization of the gluing process, elimination of defective paper conveyance in the gluing section, and prevention of defective booklet production. To do.

[0013]

The above-mentioned problems can be solved by the following glue applying apparatus and glue binding apparatus of the present invention.

(1) Adhesive emulsion glue is applied to the vicinity of the side edges of the paper discharged from the image forming apparatus to form a band-shaped glue application portion, and the glue-coated paper is aligned and added. In the gluing bookbinding apparatus that presses to produce a booklet, when the paper waviness prevention mode is set in the operation unit of the image forming apparatus, the image forming apparatus preliminarily displays a specific image in the vicinity of the side edge of the paper serving as the glue applying section. A glue binding apparatus, characterized in that the glue is applied to the specific image on the sheet by the glue discharging means of the glue binding apparatus to form a glue application portion.

(2) Adhesive emulsion glue is applied to the vicinity of the side edges of the paper discharged from the image forming apparatus to form a band-shaped glue application portion, and the glue-coated paper is aligned and added. A glue binding apparatus for producing a booklet by pressing, wherein a deodorizing filter and an exhaust fan are provided on the main body of the glue binding apparatus.

(3) Adhesive emulsion means is applied to the vicinity of the side edges of the paper discharged from the image forming apparatus to form a strip-shaped glue application portion, and the glue-coated paper is aligned and added. In a glue binding apparatus for producing a booklet by pressing, the glue binding apparatus is characterized in that the tip of the glue discharging nozzle of the glue discharging means is brought into contact with the surface of the paper to be passed to form a glue applying section. .

(4) Adhesive binding in which a double-sided adhesive tape is attached near the side edges of the sheet discharged from the image forming apparatus, and the sheet having the band-shaped adhesive surface is aligned and pressed to produce a booklet. In the device, a sheet of paper having a plurality of through holes in the adhesive surface portion for sticking the double-sided adhesive tape, or a sheet of paper having a plurality of slits, and a sheet of paper having no through holes or slits are mixed and superposed. A gluing bookbinding device characterized by adhering a booklet.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a gluing bookbinding apparatus of the present invention,
An image forming apparatus equipped with a glue binding device will be described with reference to the drawings.

[Embodiment of Image Forming Apparatus] FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus A, an image reading apparatus B, and a glue binding apparatus C.

In the image forming apparatus main body A, a charging means 2, an image exposing means (writing means) 3, a developing means 4, and a transfer means 5 are provided around a rotating image carrier (hereinafter referred to as a photoconductor) 1.
An image read from the original by the laser beam of the image exposing unit 3 after the surface A of the photoconductor 1 is uniformly charged by the charging unit 2 by disposing A, the discharging unit 5B, the separation claw 5C, and the cleaning unit 5D. Exposure scanning is performed based on the data to form a latent image, and the latent image is reversely developed by the developing means 4 to form a toner image on the surface of the photoconductor 1.

On the other hand, the paper S fed from the first paper feeding means 6A or the second paper feeding means 6B is sent to the transfer position via the intermediate paper feeding means 7A. Transfer means 5A at the transfer position
Thus, the toner image is transferred onto the sheet S. After that, the electric charge on the back surface of the sheet S is erased by the discharging unit 5B, separated from the photoconductor 1 by the separation claw 5C, conveyed by the conveying unit 7B, and subsequently heated and fixed by the fixing unit 8 and discharged by the sheet discharge roller 7C. To be done.

When images are formed on both sides of the paper S,
The sheet S heated and fixed by the fixing means 8 is branched from the normal sheet discharge path by the conveyance path switching plate 7D, and is switched back by the reversal conveyance means 7E to reverse the front and back,
The sheet is discharged to the outside of the apparatus by the sheet discharge roller 7C. The paper S discharged from the paper discharge rollers 7C is sent to the receiving unit 11 of the glue binding apparatus C.

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

On the upper part of the image forming apparatus A, an image reading apparatus B equipped with an automatic original feeding apparatus of a moving original reading type is installed.

[Glue Binding Device] The paper transporting device of the glue binding device C includes a direct paper discharge means 10, a horizontal transport means 20,
Direction changing conveyance means 30, sheet storage section 40, discharge means 5
0, a sheet discharging unit 60, a front cover sheet feeding unit 70A, and a back cover sheet feeding unit 70B. The glue applying device of the glue binding apparatus C includes a first glue discharging means 80A for forming a glue applying portion on the first surface of the paper S, a second glue discharging means 80B for forming a glue applying portion on the second surface of the paper S, And a glue supply device 89 for supplying glue to the first glue discharging means 80A and the second glue discharging means 80B.

FIG. 2 is a front sectional view of the glue binding apparatus C. The sheet S introduced into the receiving unit 11 is the switching plate 12
Thus, either the upper direct paper discharging means 10 or the horizontal conveying means 20 is selected.

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

When the shift mode or the non-sort large-volume sheet discharging mode is set, the switching plate 12 directly closes the sheet discharging path of the sheet discharging means 10 and opens the conveying path of the horizontal sheet conveying means 20 to allow the sheet S to pass therethrough. to enable. The paper S introduced into the horizontal transport means 20 is transported by the transport rollers 21, 22, 23, 24.
The sheet S, which is sandwiched and conveyed by the sheet, and which is not subjected to the glue application process, is sandwiched by the ejection roller 61 through a shift unit (not shown), and is ejected from the first ejection port 62 onto the elevating and ejecting table 63 outside the machine. . For example, up to 3
It is possible to stack a large amount of 000 sheets of paper S.

(Paper Transport for Glue Application) FIG. 3 is a side sectional view of the glue binding apparatus C, and FIG. 4 is a plan view. 5 and 6 are schematic perspective views of the glue binding apparatus C.

When the mode of the orthogonal U-turn conveyance and gluing bookbinding process of the sheet by the direction changing and conveying means 30 is set, the sheet S discharged from the image forming apparatus main body A is conveyed by the conveying roller 21 driven by the motor M1. It is sandwiched by 24 to be conveyed. When the leading end of the sheet S comes into contact with the positioning member 25, the bending of the sheet S is corrected, and the sheet S is positioned in the transport direction (first transport direction X shown in FIGS. 2 and 4 to 6).
1). After that, 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 the conveying rollers 31 and 32 which are driven and rotated by the motor M2, and conveyed in the conveying direction deflected by 90 degrees (the second conveying direction Y1 shown by the arrows in FIGS. 3 to 6). ). The paper S is continuously conveyed by the transport rollers 33, 34.
The sheet is sandwiched by and conveyed by the U-turn to be fed into the sheet storage section 40 (third conveying direction Z shown by arrows in FIGS. 3 to 6).

(Glue discharging means) The glue discharging means is a first glue discharging means 80A for forming the glue applying portion N on the first surface of the paper S.
And a second glue ejecting means 80B for forming a glue applying portion N on the second surface of the paper S. Since the first glue discharging means 80A and the second glue discharging means 80B have almost the same structure, the structure will be referred to as the glue discharging means 80 hereinafter.

FIG. 7 is a cross-sectional view of the glue discharging means 80, and FIG. 8 is a cross-sectional view of the glue discharging means 80 in a glue applied state.

The glue discharging means 80 is provided with an opening 8 for discharging glue.
A nozzle member (hereinafter referred to as a nozzle) 81 having 1a,
A movable needle member (hereinafter referred to as a needle) 82 that opens and closes the opening 81a, a casing 83 that movably accommodates the needle 82, a solenoid SL that movably drives the needle 82, and the like.

The return spring 85 is used for the casing 8 of the glue discharging means 80.
4 and the upper surface of the flange portion 82b, the needle 82 is pressed downward. Solenoid S
When L is inactive, the tip end 82a of the needle 82 closes the opening 81a of the nozzle 81 by the return spring 85.

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, the opening 81a of the nozzle 81 is opened, and the glue can be discharged. Opening 81a
The gap distance between the front end portion 82a and the front end portion 82a is variable by the nozzle adjusting knob 86.

An inlet member 87 is fixed to the side surface of the casing 83, and the glue supplied from a glue supply device 89 described later is introduced into the glue accommodating chamber 83a through a supply pipe 88.

(Applying Glue to Paper S) FIG. 9 is a plan view showing a linear glue applicator N formed near the side edge of the paper S. FIG. 9A shows a linear glue application portion N formed on the long side of the paper S. FIG. 9B shows a linear glue application portion N formed on the short side of the paper S. The linear glue application portion N firmly adheres the sheets to each other over substantially the entire length in the vicinity of the side edge portions of the sheets S to produce a glued sheet bundle.

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

(Stacking, aligning, pressurizing process of the paper S) (see FIGS. 3 to 5) The first paper S not subjected to the glue application process is nipped and conveyed by the conveyance rollers 33 and 34 which are driven and rotated. The sheet is conveyed in the fourth conveying direction Y2 and placed on the sheet table 41.
The subsequent second and subsequent sheets of paper S that have been subjected to the glue application are nipped and conveyed by the conveyance rollers 33 and 34, and are conveyed in the fourth conveyance direction Y2.
And is stacked on the preceding paper S on the paper table 41.

That is, the leading end of the sheet S nipped and conveyed by the conveying rollers 34 is grasped by the grasping means (gripper) 43 held by the rotating endless belt 42, and the upper part of the sheet placing table 41 is moved upward. 4 is transported in the transport direction Y2. The pressurizing means 44 held by the moving gripping means 43 pressurizes and moves the back surface side of the paste application portion N forming surface of the preceding paper S placed on the paper placing table 41, and adheres between the paper sheets. To ensure. The leading edge of the sheet S gripped by the gripping means 43 contacts the leading edge stopper 45 to align the leading edge. The leading end stopper 45 can be moved by a driving unit (not shown), and stops at a predetermined position depending on the size setting of the paper S. The rear end of the sheet S has a sheet aligning and pressing member 46 that is movably driven.
Thereby, the rear end of the sheet is aligned and the upper surface of the rear end of the sheet is pressed.

Both side edges of the sheet S have width matching reference members 47.
The sheet is aligned by the aligning means including the sheet aligning and pressing member 46. The leading end portion, the trailing end portion, and both side end portions of the sheet S are aligned and positioned 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 mounting table 41. Alternatively, the pressing process may be performed every time a plurality of sheets S are stacked.

Through the above steps, a single bundle of sheets bound and glued is completed. In the glue binding apparatus C, for example, a maximum of 200 sheets of paper S can be glued and bound into a book.

(Discharge) A plurality of discharge belts 53 wound around a driving roller 51 and a driven roller 52 are rotatably arranged on a part of the sheet stacking surface of the sheet mounting table 41.

The final sheet Sn is stacked on the sheet mounting table 41 and subjected to a pressure process. The booklet Sa that has been bound and bound is
The discharge claw 5 of the discharge belt 53 rotated by the motor M3
It is held by 3a, slides on the mounting surface of the sheet mounting table 41, is sandwiched by the discharge rollers 64 provided in the second discharge ports 65 of the sheet discharging means 60, and is discharged onto the elevating sheet discharging table 63. , And are stacked (fifth transport direction X2 indicated by an arrow in FIG. 5). Prior to this paper discharge processing, the pressing means 44 and the width alignment reference member 47.
Is evacuated to the upper side of the conveyance path by a driving means (not shown).

On the elevating and discharging tray 63, the paper S which has been discharged from the first discharge opening 62 and which has not been coated with glue and the booklet Sa which has been discharged from the second discharge opening 65 and which has been coated with glue can be stacked. And a large amount of paper S and booklet S are driven by the lifting drive.
a can be accommodated.

. (Paper bundle preparation processing) Glue binding device C
Is a paper bundle manufacturing function that glues and binds the side edges of paper.
The front cover and the back cover are attached to the front and back sides of the sheet bundle, and the case has a cover and case binding function for binding and binding.

FIG. 10A is a partially enlarged sectional view showing a sheet bundle process by the sheet bundle producing function, and FIG. 10B is a partially enlarged sectional view of the produced sheet bundle.

The glue application portion N is not formed on the first sheet S1 and is placed on the sheet placement table 41. The glue applying portion N is formed on the second and subsequent sheets S, and the sheets S are sequentially stacked on the preceding sheets S on the sheet mounting table 41. After the final sheet Sn is placed and adhered, the pressure application unit 44 presses the glue application portion N to make the adhesion uniform.

(Cover cover binding process) FIG. 11
FIG. 11A is a partially enlarged cross-sectional view showing a sheet bundle process by the cover case binding bookbinding manufacturing function, and FIG. 11B is a partially enlarged cross-sectional view of the produced cover case binding bookbinding.

After the front cover Ka is bent at a right angle on the sheet mounting table 41 at the first fold a, the sheets S having the glue application portion N formed thereon are sequentially stacked on the preceding sheet S. Near the side edge of the final sheet Sn, a glue applying section N on the front side of the sheet by the first glue ejecting means 80A and a second glue ejecting means 80B.
After the adhesive coating portion Na on the back surface side of the sheet is formed, the sheet is stacked and adhered on the preceding sheet Sn-1.

Then, by a folding means (not shown),
The front cover sheet Ka is bent at a right angle on the back cover sheet portion c at the second fold line d to form a folded portion. The folded portion is pressed by the pressing means to make the adhesion uniform.

Similarly to the paper S, the back cover Kb is formed and conveyed with the glue application portion N, and is fed onto the paper placing table 41 with the glue application portion N facing down, and the final paper Sn and the front cover sheet. K
It is placed on the folded-back portion of a and adhered by the glue application portion N.

[First Embodiment] FIG. 12 is a plan view of a sheet S on which a specific image has been formed in advance by the image forming apparatus A in the area where the glue application portion N is formed. FIG.
Shows an example in which the specific image is the intermediate density image T1, and FIG. 12B shows an example in which the specific image is the lattice pattern image T2.

In the glue binding apparatus, the adhesive ejecting means 80 applies emulsion glue to the vicinity of the side edges of the paper S discharged from the image forming apparatus A to form a band-shaped glue applying portion N, and the glue is applied. The sheet S is aligned and pressed to produce a booklet Sa.

The operation section 9 of the image forming apparatus A is provided with a sheet corrugation prevention mode setting means. The paper wavy prevention mode setting means is an input means for forming a specific image, or a means for selecting thin paper and thick paper. When the paper wavy prevention mode is set, the image forming apparatus A forms a specific image in advance outside the image forming area and in the vicinity of the side edge of the paper at the position to be the glue application section N.

The sheet S on which the specific image is formed is discharged from the image forming apparatus A and introduced into the gluing bookbinding apparatus C, and the adhesive discharging means 80 applies emulsion glue onto the specific image on the sheet S to apply the adhesive. Form N.

By applying an emulsion glue on the specific image on the paper S to form the glue application portion N, the toner resin is present on the surface of the paper S and partially prevents the contact between the paper S and the glue. The absorption of water in the emulsion paste into the paper S is weakened. Therefore, adhesiveness is weaker when glued on the specific image than when glued on a white background without the specific image, but less water absorption and less waviness of the paper S.
Therefore, by controlling the specific image, it is possible to control the adhesive force and the waviness, so that the bookbinding quality suitable for the type of the paper S and the purpose can be obtained. The specific image is not limited to the intermediate density image or the lattice pattern image.

(Example) Nozzle 81 of glue discharge means 80
Adhesive strength and waviness were evaluated by changing the flow rate of the glue in the glue binding apparatus C, in which the vinyl acetate emulsion glue was flowed out from and the glue was applied to the paper S.

The glue flow rate is determined by the stroke of the needle 82 in the nozzle 81 of the glue discharge means 80 and the pressure applied to the glue in the nozzle 81. Here, the flow rate of glue was measured continuously for 10 seconds, and this was taken as the glue flow rate (Fig. 7,
(See FIG. 8).

FIG. 13A is a plan view for explaining the adhesive strength measurement of the paper S, and FIG. 13B is a front view thereof.

The adhesive strength was measured by pulling the edge of the sheet S with the spring SB only when the booklet Sa was opened 180 ° and measuring the load when the sheet S was damaged.

FIG. 14 is a schematic view of an apparatus for measuring the corrugation of the paper S. It is difficult to evaluate only the height of the corrugation or the number of corrugations, because the corrugation state is different for each. Therefore, the following method was used to evaluate with a certain index.

The booklet Sa is placed on the moving stage, passed through the test position under the non-contact laser displacement sensor, the wavy profile is read, the tilt angle of each wavy wave is obtained by the memory hi-coder, and the graph is drawn. Draw and evaluate based on the size of the area that intersects the scanning distance on the horizontal axis.

FIG. 15 is a characteristic diagram showing the glue flow rate and the adhesive strength, and the glue flow rate and the waviness. When gluing the paper S discharged from the image forming apparatus A, the adhesive strength and the waviness were evaluated in the case where the intermediate density image was previously formed in the glue margin portion and in the case where the glue margin portion was blank.

The fold line shown in FIG. 15 shows the adhesive strength when the glue margin portion is blank, and the fold line shows the adhesive strength when the glue margin portion is an intermediate density image. The fold line shows waviness when the glue margin part is blank, and the fold line shows wavy when the glue margin part is an intermediate density image. The ripples are
It is a numerical value when the wavy surface of the paper S is read by the Memory HiCorder.

As shown in FIG. 15, when the intermediate density image is formed, the adhesive strength is weaker than that in the case of blank paper,
It turns out that there is little waviness. Therefore, the user can select the setting of the presence / absence of the intermediate density image depending on whether the adhesive strength is to be increased or the waviness is to be reduced, so that the booklet Sa having a quality according to the purpose or need can be produced. it can.

[Second Embodiment] In a gluing bookbinding apparatus C using a vinyl acetate emulsion paste, a peculiar odor is generated from the vinyl acetate emulsion paste, which makes the surrounding environment unpleasant. In particular, in an office or the like in which the image forming apparatus A including the glue binding apparatus C is installed, this unpleasant odor is a problem.

A fan motor FM and a deodorizing filter F such as activated carbon were installed on the back side of the exterior body of the glue binding apparatus C. Before the air in the gluing bookbinding device C is discharged to the outside of the machine by creating a flow of air in the gluing bookbinding device C by the fan motor FM, the deodorizing filter F prevents the odor from leaking to the outside (see FIG. 3). ).

The glue binding device C is continuously operated, and the paper S
Table 1 shows the results of odor sensory evaluation performed by 10 people on the gluing bookbinding apparatus C in which the fan motor FM and the deodorizing filter F are installed and the gluing bookbinding apparatus C in which the fan motor FM and the deodorizing filter F are not installed. .

[0071]

[Table 1]

As shown in Table 1, although there are individual differences,
With the gluing bookbinding device C in which the fan motor FM and the deodorizing filter F were installed, no one felt the odor was uncomfortable, and the effect of the deodorizing measure was confirmed.

[Third Embodiment] When the glue 81 is ejected from the nozzle 81 of the glue ejecting means 80 to form the glue application portion N on the paper surface, a small amount of emulsion glue is applied uniformly on the paper surface. Therefore, it is necessary to make the distance between the paper S and the tip of the nozzle close. In particular, when the viscosity of the emulsion paste is several hundreds to 1,000 mPa · s, the emulsion paste tends to be a bead-like shape at the tip of the nozzle due to the interfacial tension, which makes uniform coating difficult.

FIG. 16 is a partial cross-sectional view showing a state in which the tip of the nozzle 81 is brought into contact with the sheet S to apply it.

The solenoid SL is applied by bringing the tip of the nozzle 81 into contact with the surface of the sheet S passing through and applying glue.
It is possible to apply a fixed amount of glue to the paper S within the ON time, and it is possible to form a uniform glue coating layer with a small amount of glue and also obtain adhesive strength.

In FIG. 17, the tip of the nozzle 81 is brought into contact with the surface of the sheet S, and the tip of the nozzle 81 is set to the sheet S.
FIG. 6 is a characteristic diagram in which the adhesive strength was measured by changing the glue flow rate when the adhesive was placed at a position 0.5 mm away from the surface of FIG.

As shown in FIG. 13, the adhesive strength is obtained by measuring the load when the sheet S is broken by pulling the edge of the sheet S with the spring SB only while the booklet Sa is opened 180 °. Is.

FIG. 17 is a characteristic diagram showing the relationship between the glue flow rate and the adhesive strength when the tip of the nozzle 81 and the surface of the paper S are brought into contact or non-contact with each other.

As shown in FIG. 17, when the tip portion of the nozzle 81 is brought into contact with the surface of the paper S, it is not in contact (0.
It is found that the adhesive strength (tear strength of the paper) is large because the adhesive can be applied more uniformly than the case of 5 mm), and the difference in the strength is more remarkable as the adhesive flow rate is smaller.

However, when tens of thousands to hundreds of thousands of sheets S are passed through the glue application position, the nozzle 8 made of stainless steel is used.
Even with 1, the tip of the nozzle 81 is worn due to friction with the paper S.

Therefore, by selectively using the nozzle 81 in the non-contact position with respect to the surface of the paper S, the life of the nozzle 81 can be extended as compared with the case where the nozzle 81 is always in contact.

Further, the nozzle 81 is variably controlled to contact / non-contact depending on the type of the sheet S to be passed. The glue discharging means 80 shown in FIG. 7 is supported by a drive source and a lifting means (not shown) so that it can be driven up and down.

In the case of a paper S such as thin paper which requires a small amount of glue application due to absorption of moisture in the glue, waviness of the glue application surface is likely to occur, and the glue application is performed at the contact position. In the case of thick paper that is less likely to wavy and can be coated with a relatively large amount of glue, setting it to a non-contact position reduces the wear of thick paper that has a high rigidity and a large frictional force. It is possible to effectively improve the adhesive strength and the durability of the nozzle 81.

Further, as shown in FIG. 8, a guide plate 91 for guiding the leading end of the sheet S to be passed to the leading end of the nozzle 81 is provided on the upstream side of the nozzle 81 in the sheet carrying direction. Information board 9
1 is made of a film-shaped resin material such as polyethylene terephthalate (PET). The guide plate 91 prevents the leading edge of the sheet S from coming into contact with the nozzle 81 and causing a sheet jam.

[Fourth Embodiment] FIG. 18 is a partial sectional view of a gluing bookbinding apparatus of the present invention which uses a double-sided adhesive tape for adhering sheets.

The double-sided adhesive tape holding means is held by the endless belt 42 and is mounted on the pressing means 44 which is linearly movable, and is movable in the sheet conveying direction. The double-sided pressure-sensitive adhesive tape holding means is composed of an original winding portion 48 that holds and supplies the double-sided pressure-sensitive adhesive tape NT in a roll shape, and a winding portion 49 that winds the release paper of the double-sided pressure-sensitive adhesive tape NT.

The strip-shaped double-sided adhesive tape NT pulled out from the original winding portion 48 is wound around the winding portion 49 by winding the pressure roller 44A of the pressure means 44. The double-sided adhesive tape NT is pressed by the pressure roller 44A, and the adhesive paste is adhered onto the uppermost sheet of the sheet bundle Sa.

FIG. 19 (a) is a diagram for explaining stacking of a plurality of sheets S and double-sided adhesive tape NT, FIG. 19 (b).
FIG. 4 is a plan view of a sheet S having a through hole h to which a double-sided adhesive tape NT is attached. FIG. 20A shows a plurality of sheets S.
And FIG. 20B is a cross-sectional view illustrating stacking of the double-sided adhesive tape NT, and FIG. 20B is a cross-sectional view of a plurality of sheets S attached by the double-sided adhesive tape NT.

The first sheet S1 having no through hole h is placed on the sheet table 41, and the second sheet S2 having the through hole h is placed thereon. Next, after the double-sided adhesive tape NT is attached to the paper S2 to remove the release paper, the third paper S3 having the through holes h is placed thereon, and the transparent paper is further placed thereon. A fourth sheet S4 having no holes h is placed and pressed.

By this pressurization, the adhesive glue of the double-sided adhesive tape NT passes through the through hole h and enters the paper S1 and the paper S4 to be bonded.

In this way, one double-sided adhesive tape N
With T, it is possible to bond four sheets S1 and S4 without the through hole h and four sheets S2 and S3 with the through hole h opened.

Thereafter, in the same manner, two sheets of double-sided adhesive tape NT are used to bond five sheets of paper S7 and S9 having no through holes h and sheets S5, S6 and S8 having through holes h to each other. To do.

In this way, conventionally, eight double-sided adhesive tapes NT were required to bond the nine sheets S, but in the pasting and binding apparatus C of the present invention, the nine sheets S are bonded together. To do this, use three double-sided adhesive tapes NT. Therefore, the usage amount of the double-sided adhesive tape NT becomes 1/3, and the thickness of the adhesive portion of the sheet bundle is reduced.

The sheets S2, S3, S5, S6, S8
The arrangement of the through holes h is the same, but by shifting the arrangement position of the through holes h, it is possible to bond more sheets S with one double-sided adhesive tape NT.

As described above, the sheet S having the plurality of through holes h formed in the attaching surface portion for attaching the double-sided adhesive tape NT and the sheet S without the through holes h are mixed and overlapped to form a plurality of sheets. The amount of the double-sided adhesive tape NT used can be reduced by adhering the sheet S of No. 2 with the double-sided adhesive tape NT. and,
It is possible to minimize the increase in the thickness of the sheet bundle due to the adhesion of the double-sided adhesive tape NT.

FIG. 21 (a) is a diagram for explaining a sheet bundle preparation in which a sheet having slits e is arranged instead of a sheet having a through hole h, and FIG. 21 (b) is a double-sided adhesive tape NT.
FIG. 3 is a plan view of a sheet S2A having a slit e attached thereto.

Papers S2A, S3A, S5 having a plurality of slits e on the adhesive surface portion to which the double-sided adhesive tape NT is attached
A, S6A, S8A and sheets S1, S without notches e
4, S7, S9 are mixed and superposed, and paper S2A,
S3A, paper S5A, S6A, and between S8A, S9, with double-sided adhesive tape NT interposed, respectively,
Create a stack of paper.

[0098]

As is apparent from the above description, the sizing and binding apparatus of the present invention has the following effects.

(1) The user selects the setting of the paper corrugation prevention mode when it is desired to increase the adhesive strength between the paper and when it is desired to reduce the corrugation of the paper. Can be made.

(2) Adhesive binding A fan is installed in the main body of the apparatus to create a flow of air in the main body of the apparatus, and the air inside the main body of the apparatus is passed through a deodorizing filter before being discharged to the outside of the main body of the apparatus. The odor emitted from the adhesive paste does not leak out and environmental pollution is prevented.

(3) By applying the glue by bringing the tip of the nozzle of the glue discharge means into contact with the paper, it becomes possible to apply the glue evenly with a small amount of glue, and sufficient adhesive strength can be obtained. In addition, the life of the tip of the nozzle can be extended by selecting the tip of the nozzle so that it can be contacted / non-contacted with the paper depending on the type of paper. Further, by installing a guide plate on the upstream side of the nozzle in the paper conveyance direction and urging the paper below the nozzle, it is possible to prevent the occurrence of a paper jam in which the leading end of the conveyed paper hits the nozzle.

(4) A sheet having a plurality of through holes or slits in the sticking surface portion for sticking the double-sided adhesive tape, and a through hole,
Alternatively, it is possible to reduce the amount of double-sided adhesive tape used by mixing and stacking non-cut sheets and adhering a plurality of sheets with a double-sided adhesive tape. In addition, it is possible to minimize the increase in the thickness of the sheet bundle due to the adhesion of the double-sided adhesive tape.

[Brief description of drawings]

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

FIG. 2 is a front cross-sectional view of a glue binding device.

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

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

FIG. 5 is a schematic perspective view of a glue binding apparatus.

FIG. 6 is a schematic perspective view of a glue binding apparatus.

FIG. 7 is a cross-sectional view of the glue discharging means.

FIG. 8 is a cross-sectional view of the glue discharging means in a glue applied state.

FIG. 9 is a plan view showing a linear glue application portion formed near a side edge portion of a sheet.

FIG. 10 is a partially enlarged cross-sectional view of a sheet bundle process using the sheet bundle production function and the produced sheet bundle.

FIG. 11 is a partially enlarged cross-sectional view of a sheet bundling process by the cover-covered case binding production function and the produced cover-covered case binding.

FIG. 12 is a plan view of a sheet on which a specific image is formed in advance by an image forming apparatus in a range where a glue application section is formed.

13A and 13B are a plan view and a front view illustrating the measurement of the adhesive strength of a sheet.

FIG. 14 is a schematic diagram of an apparatus for measuring waste of paper.

FIG. 15 is a characteristic diagram showing glue flow rate and adhesive strength, and glue flow rate and waviness.

FIG. 16 is a partial cross-sectional view showing a state in which the tip portion of the nozzle is brought into contact with a sheet to apply the sheet.

FIG. 17 is a characteristic diagram showing the relationship between the glue flow rate and the adhesive strength when the tip of the nozzle and the surface of the paper are brought into contact or non-contact with each other.

FIG. 18 is a partial cross-sectional view of a gluing bookbinding apparatus using a double-sided adhesive tape for adhesion between sheets.

FIG. 19 is a diagram illustrating stacking of a plurality of sheets of paper and a double-sided adhesive tape, and a plan view of a sheet having a through hole to which the double-sided adhesive tape is attached.

FIG. 20 is a cross-sectional view illustrating stacking of a plurality of sheets of paper and a double-sided adhesive tape, and a cross-sectional view of a plurality of sheets of paper adhered with the double-sided adhesive tape.

21A and 21B are views for explaining a sheet bundle production in which sheets having cutouts are arranged, and a plan view of a cutout sheet to which a double-sided adhesive tape is attached.

[Explanation of symbols]

9 Operation part 48 former winding part 49 Winding part 80 glue discharge means 81 Nozzle member (nozzle) 82 Needle member 89 glue supply device 91 Information board A image forming apparatus C glue binding device F deodorant filter FM fan motor N, Na glue application part NT double-sided adhesive tape S, S1-S9, Sn-1, Sn paper T1 intermediate density image (specific image) T2 lattice pattern image (specific image) e Notch h through hole

Claims (8)

[Claims] 1. A strip-shaped glue application portion is formed by applying an emulsion glue by means of a glue discharge means in the vicinity of a side edge portion of a paper discharged from an image forming apparatus, and the glue-coated paper is aligned and pressed. In a gluing bookbinding device that produces a booklet
When the paper waviness prevention mode is set in the operation unit of the image forming apparatus, the image forming apparatus forms a specific image in the vicinity of the side edge portion of the paper serving as the glue applying unit, and thereafter,
A glue binding apparatus, wherein emulsion glue is applied to a specific image on the sheet by a glue discharging means of the glue binding apparatus to form a glue application section. 2. The paper corrugation prevention mode setting means,
The glue binding apparatus according to claim 1, which is a means for selecting thin paper or thick paper. 3. A paper adhesive discharged from the image forming apparatus is applied to the vicinity of a side edge portion of the paper by an emulsion adhesive to form a band-shaped adhesive applying portion, and the adhesive-coated paper is aligned and pressed. In a gluing bookbinding device that produces a booklet
A glue binding apparatus, wherein a deodorizing filter and an exhaust fan are provided on the main body of the glue binding apparatus. 4. A strip-shaped glue applying section is formed by applying an emulsion glue by means of a glue discharging means in the vicinity of a side edge of a sheet discharged from the image forming apparatus, and the glue-coated sheet is aligned and pressed. In a gluing bookbinding device that produces a booklet
A glue binding apparatus, wherein a tip of a glue discharge nozzle of the glue discharge means is brought into contact with a surface of a paper sheet to be passed therethrough to form a glue application portion. 5. The glue discharging means is movably supported by a driving means, and a tip portion of a glue discharging nozzle of the glue discharging means is controlled to be in contact with or out of contact with a sheet to be passed. The gluing bookbinding device according to claim 4, wherein 6. The glue binding apparatus according to claim 4, wherein the control of contact or non-contact with the paper is made variable depending on the type of the paper to be passed. 7. A guide plate is provided on the upstream side of the glue discharging nozzle in the paper conveying direction, and a guide plate is provided for guiding the leading end of the sheet to be passed to the leading end of the glue discharging nozzle. The gluing bookbinding apparatus according to item 4. 8. A glue binding apparatus for adhering a double-sided adhesive tape in the vicinity of a side edge portion of a sheet discharged from an image forming apparatus, aligning and pressing the sheet having a strip-shaped adhesive surface portion to produce a booklet. In, in the adhesive surface portion for adhering the double-sided adhesive tape, a paper sheet having a plurality of through holes, or a paper sheet having a plurality of slits, and a sheet without the through holes or slits are mixed and superposed and adhered. A gluing bookbinding device, which is characterized by producing a booklet.