JP2012066451A - Bookbinding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bookbinding apparatus in which the permeability of an adhesive of the end face which becomes the back cover side of a paper bundle is enhanced, and which improves binding strength.SOLUTION: The bookbinding apparatus 11 includes: a matching section 14 which matches a printed paper 3 supplied from an image forming apparatus 1; and an adhesive coating section 22 which holds a matched paper bundle 16 to the thickness direction X, and applies an adhesive A to the end face 16a which becomes the back cover side of the paper bundle 16 after bookbinding, wherein the adhesive coating section 22 includes: an adhesive reservoir 23 which reserves the adhesive A; and an application roller 25 which is arranged so as to be flooded with the adhesive A accumulated in the adhesive reservoir 23, and applies the adhesive A to the end face 16a which becomes the back cover side of the paper bundle 16 revolving centering on a shaft 24, and an end face processing device 17 which contacts with the end face 16a of the paper bundle 16, shaves one of edges at least of the thickness direction of each of papers 3 in the end face 16a, and forms a gap between each of papers 3 before the adhesive coating section 22 applies the adhesive A is included.

Description

  The present invention includes an adhesive application unit that applies an adhesive to an end surface on the spine cover side after bookbinding in an aligned sheet bundle, and an end surface of the sheet bundle to which the adhesive is applied before the adhesive application unit The present invention relates to a bookbinding apparatus provided with an end face processing means for processing the end face in order to increase the permeability of the adhesive on the back cover side.

  Conventionally, there is a bookbinding apparatus that binds a bundle of sheets. The bookbinding apparatus includes an aligning unit that aligns printed sheets, and an adhesive application unit that applies an adhesive to an end surface on the spine cover side after binding in the sheet bundle aligned by the aligning unit. Further, this bookbinding apparatus is provided with milling processing means for milling the end face in front of the adhesive application means for the purpose of improving the permeability of the adhesive on the end face on the spine cover side of the sheet bundle.

  As shown in FIG. 6, the milling means 101 includes a rotating shaft 102 that rotates in a predetermined direction, and a brush 103 that is provided at the upper end of the rotating shaft 102 and has a plurality of needles 104 implanted on the upper surface. Yes. The milling means 101 moves in the thickness direction X with respect to the end surface 105a on the spine cover side of the aligned sheet bundle 105. At this time, the needle 104 of the rotating brush 103 comes into contact with the end surface 105a and this The end surface 105a becomes a rough surface. Thereby, the permeability of the adhesive on the end face 105a is increased.

  The sheet bundle 105 having the roughened end surface 105 a by the milling processing unit 101 is sent to the subsequent adhesive application unit 107. The sheet bundle 105 is nipped in the thickness direction X by the nipping means 106, 106 after being aligned by the aligning means. As shown in FIG. 7, the adhesive application means 107 includes an adhesive reservoir 108 for storing the hot-melt adhesive A, and an upper portion of the adhesive reservoir 108 so as to be immersed in the adhesive A stored in the adhesive reservoir 108. And a coating roller 109 that rotates about a shaft 109 a provided extending in a direction orthogonal to the thickness direction X of the sheet bundle 105. The sheet bundle nipped by the nipping means 106, 106 moves in parallel in the thickness direction X and passes above the application roller 109. At this time, the outer peripheral surface of the application roller 109 is the end surface 105 a of the sheet bundle 105. And the adhesive A is applied to the end face 105a. The adhesive A penetrates into the end surface 105a because the end surface 105a of the sheet bundle 105 is rough. As a result, the sheets of the sheet bundle 105 are firmly bonded, and the cover sheet is bonded firmly after the adhesive application unit 107, so that the binding strength is improved.

  Moreover, there is a technique disclosed in the following Patent Document 1 as a conventional technique for increasing the permeability of the adhesive on the end surface on the spine cover side of the sheet bundle to increase the binding strength. In this technology, in the process of cutting a sheet after printing, the sheet is cut using an irregular cutting blade so that the edges of the sheet become rough, and when the sheets are aligned, the back cover of the sheet bundle The side end face is roughened. In addition, the blade which cuts a sheet | seat is a sawtooth shape and the edge-shaped blade is used.

JP-A-2005-320161

  However, there is a demand for further improvement of the binding strength in the case of the perfect binding such as the case binding. Therefore, just by making the end face 105a of the sheet bundle 105 rough as in the conventional milling processing means 101 shown in FIG. The binding strength was insufficient.

  Further, in the technique disclosed in Patent Document 1, since each paper is aligned after the edges of the paper are roughened by a cutting blade, the edge of each paper spreads in the thickness direction of the paper. The end face on the back cover side of the sheet bundle after alignment becomes rough and a gap is formed between the sheets to increase the permeability of the adhesive on the end face of the sheet bundle. Since the edge of each sheet is processed roughly, there is a problem that alignment of each sheet having a rough edge becomes difficult and the accuracy of alignment is lowered.

  Accordingly, the present invention has been made in view of the above situation, and an object of the present invention is to provide a bookbinding apparatus in which the binding strength is improved by increasing the permeability of the adhesive on the end surface on the spine cover side of the aligned sheet bundle. There is to do. Since the present invention processes the end face of the sheet bundle after being aligned, the alignment of each sheet does not become complicated unlike the technique disclosed in the above-mentioned Patent Document 1.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The bookbinding apparatus according to claim 1 of the present invention is a bookbinding apparatus 11 including an adhesive application means 22 for applying the adhesive A to the end surface 16a on the spine cover side after binding of the sheet bundle 16.
Before the adhesive application means 22 applies the adhesive A, it contacts the end surface 16a on the spine cover side of the sheet bundle 16 and at least one of the end surfaces 16a in the thickness direction of each sheet 3 And an edge surface processing means 17 for forming a gap between the sheets 3.

The bookbinding apparatus according to claim 2, wherein the end surface processing means 17 includes:
A rotating shaft 19 extending in a direction Y perpendicular to the thickness direction X of the sheet bundle 16;
A plurality of rod-like bodies 20 provided on the outer peripheral surface of the rotary shaft 19 and projecting in a substantially radial direction of the rotary shaft 19;
A plurality of protrusions 21 provided on the outer peripheral surface of the rod-shaped body 20 are provided.

The bookbinding apparatus according to claim 3, wherein the adhesive application unit 22 includes:
An adhesive reservoir 23 for storing the adhesive A;
It is arranged on the adhesive reservoir 23 so as to be immersed in the adhesive A accumulated in the adhesive reservoir 23, and is rotated around an axis 24 extending in a direction Y perpendicular to the thickness direction X of the sheet bundle 16. An application roller 25 that applies the adhesive A to the end surface 16a on the spine side of the sheet bundle 16;
The coating roller 25 is characterized in that the outer peripheral surface thereof is subjected to uneven processing.

  According to the bookbinding apparatus of the present invention, the end surface processing means scrapes at least one edge in the thickness direction of each sheet on the end surface on the spine cover side of the sheet bundle and forms a gap between the sheets. As a result, when the adhesive is subsequently applied by the adhesive application means, the adhesive enters the gap between the end faces. That is, the permeability of the adhesive is increased, the sheets of the sheet bundle are firmly bonded, and the adhesion of the cover sheet performed at the subsequent stage of the adhesive application unit is strengthened, so that the binding strength is improved.

  In addition, a plurality of rod-shaped bodies projecting substantially in the radial direction of the rotation shaft on the outer peripheral surface of the rotation shaft come into contact with the end surface when processing the end surface of the sheet bundle, so that each sheet on the end surface of the sheet bundle It is possible to cut at least one of the edges in the thickness direction of the paper and to spread each sheet on the end face in the thickness direction. That is, it is possible to form a gap between the sheets on the end face of the sheet bundle. Further, since the protrusions are provided on the outer peripheral surface of the rod-shaped body, the above-described edge scraping and spread of each sheet become more remarkable.

  Furthermore, by applying uneven processing to the outer peripheral surface of the coating roller, it is possible to apply the adhesive so as to push the gaps between the sheets on the end face of the sheet bundle, and the permeability of the adhesive is increased.

It is a schematic diagram which shows the whole structure of the bookbinding apparatus of this invention. (A) It is a perspective view which shows an end surface processing means. (B) It is a perspective view which shows the other example of an end surface processing means. It is a perspective view which shows an adhesive agent application means (application roller). It is a flowchart which shows a bookbinding process. It is explanatory drawing which shows the end surface process and adhesive application process in a bookbinding process. It is explanatory drawing which shows the conventional milling process means. It is explanatory drawing which shows the conventional adhesive agent application process.

Embodiments of the present invention will be specifically described below with reference to the drawings.
This bookbinding apparatus is provided at the subsequent stage of the image forming apparatus, aligns the printed sheets supplied from the image forming apparatus, holds the aligned sheet bundle in the thickness direction, and holds the sheets. This is a bookbinding apparatus that processes the end surface on the spine cover side after binding in a bundle, applies an adhesive to the end surface of the processed sheet bundle, and wraps and binds the sheet bundle with the adhesive applied to the end surface with the cover sheet.

"Image forming device"
First, the image forming apparatus provided in the front stage of the bookbinding apparatus will be described.
As shown in FIG. 1, the image forming apparatus 1 is an apparatus that forms an image on a sheet (each size paper) 3 based on document data, and includes a paper feeding unit 2, a printing unit 4, and an imposition. A driver 8 and control means 9 are provided.

  The paper feeding unit 2 includes a first paper feeding unit 2a, a second paper feeding unit 2b, and a third paper feeding unit 2c. In the illustrated example, the first paper feeding unit 2a includes A3 size paper 3 (3a). The A4 size paper 3 (3b) is accommodated in the second paper feed unit 2b, and the cover 3 (3c) is accommodated in the third paper feed unit (cover paper feed unit) 2c. Each of the paper feed units 2a, 2b, and 2c has substantially the same structure, and a paper feed that feeds the paper 3 (3a, 3b, 3c) and the paper 3 contained in the cassette one by one at a predetermined timing. Each roller includes a roller and a transport roller group that transports the paper 3 a, 3 b, 3 c fed by the paper feed roller to the printing unit 4. Upon receiving a signal from the control unit 9, each of the paper feeding units 2a, 2b, 2c supplies the respective papers 3a, 3b, 3c to the transport roller group.

  The printing unit 4 includes an inkjet head 5 in this example. The printing unit 4 includes an endless conveyance belt 6 that conveys the paper 3 during printing, and a suction fan 7 provided on the back side of the conveyance belt 6. The conveyor belt 6 is provided with a large number of intake holes penetrating between the front and back surfaces serving as a conveyance surface. The suction fan 7 sucks air through these intake holes, so that the conveyor belt 6 The sheet 3 is sucked and conveyed on the surface.

  The inkjet head 5 forms line heads arranged in a staggered manner along the direction perpendicular to the transport direction of the paper 3 for each color of black (K), cyan (C), magenta (M), and yellow (Y). Ink droplets are selectively ejected.

  The imposition driver 8 drives and controls the inkjet head 5 of the printing unit 4. The inkjet head 5 that is driven and controlled by the imposition driver 8 enables imposition of a series of continuous document data so that each page is arranged in the order of the pages after bookbinding. That is, in this example, printing is usually performed on A3 size paper 3a accommodated in the first paper supply unit 2a, and the paper 3a is cut into A4 size by the bookbinding apparatus 11, but when the book is bound, Printing is performed on the left half and the right half of the front and back of the A3 size paper 3a so as to follow the order.

  The image forming apparatus 1 further includes a cutting unit 12 that cuts the cover 3c printed by the printing unit 4 to a predetermined length and adjusts the length, and a cover tray 28 that temporarily stocks the cover 3c. Yes. The cutting means (cutting unit) 12 includes a cutter blade 13 driven by a motor. After the printed cover sheet 3 c conveyed from the printing unit 4 is cut by the cutter blade 13, the sheet is transferred to the cover tray 28. Supply sequentially. The cover sheet tray 28 stacks the cover sheet 3c sent from the cutting unit 12.

  The image forming apparatus 1 described above supplies the A3 size paper 3 a printed by the printing unit 4 to the bookbinding apparatus 11 provided at the rear stage of the apparatus 1.

Bookbinding device
Next, the bookbinding apparatus will be described.
As shown in FIG. 1, the bookbinding apparatus 11 includes a cutting unit, an alignment unit 14, an end surface processing unit 17, an adhesive application unit 22, and a binding unit 27.

  In the bookbinding apparatus 11, the cutting unit 12 of the image forming apparatus 1 described above is used as a cutting unit that cuts the printed A3 size paper 3 a supplied from the image forming apparatus 1 into the A4 size. Then, the cutting unit 12 sequentially supplies the sheet 3 cut by the cutter blade 13 of the cutting unit 12 to the aligning unit 14.

  The alignment means (alignment unit) 14 includes an alignment tray 15 on which the cut sheets 3 are stacked. The alignment unit 14 aligns the sheet bundle 16 when a predetermined number of sheets 3 are stacked on the alignment tray 15. Then, the aligned sheet bundle 16 is supplied to the end face processing means.

  The end face processing means (end face processing section) 17 processes the end face 16a on the spine cover side after bookbinding in the sheet bundle 16. As shown in FIG. 5, the sheet bundle 16 aligned by the aligning unit 14 is sandwiched in the thickness direction X of the sheet bundle 16 by a clamp unit 18 serving as a clamping unit. As shown in FIG. 2A, the end face processing portion 17 extends in a direction Y orthogonal to the thickness direction X of the sheet bundle 16 disposed in the end face processing portion 17 and is provided to be rotatable. A shaft 19 and a plurality of rod-like bodies 20 provided on the outer peripheral surface of the rotary shaft 19 and projecting in a substantially radial direction of the rotary shaft 19, and provided on the outer peripheral surface of the rod-like body 20 having a predetermined hardness. A plurality of protrusions 21. FIG. 2B shows another example of the end face processed portion. As shown in FIG. 2 (b), the end face processed portion 17 ′ of this example has a plurality of rod-like bodies 20 provided with a plurality of protrusions 21 on the outer peripheral surface of the rotary shaft 19 described above. It is provided by forming a row side by side in the direction.

  As shown in FIG. 5, the adhesive application means (adhesive application part) 22 includes an adhesive reservoir 23 for storing hot melt adhesive A and an adhesive reservoir so as to be immersed in the adhesive A stored in the adhesive reservoir 23. And a coating roller 25 that is disposed above 23 and is rotatably provided around a shaft 24 that extends in a direction Y perpendicular to the thickness direction X of the sheet bundle 16 that translates from the end face processing unit 17. Yes. Further, as shown in FIG. 3, the outer peripheral surface of the application roller 25 is subjected to a substantially spiral uneven process. In the illustrated example, a plurality of long convex portions 26 are provided on the outer peripheral surface of the application roller 25 so as to be substantially spiral. At this time, the original outer peripheral surface of the application roller 25 becomes a recess. In the adhesive application unit 22, the application roller 25 contacts the end surface 16 a of the sheet bundle 16 and applies the adhesive A to the end surface 16 a.

  In the binding means (case binding portion) 27, the sheet bundle 16 in which the adhesive A is applied to the end face 16a is translated from the adhesive application portion 22 while being sandwiched between the clamp portions 18, and is arranged at a predetermined position. Further, the cover 3 c supplied from the cover tray 28 is arranged at a predetermined position below the sheet bundle 16. Then, the cover 3c is positioned by the cover sheet positioning means so that the center of the cover sheet 3c coincides with the center of the thickness of the sheet bundle 16, and the cover sheet 3c is pressed and adhered to the end face 16a to which the adhesive A of the sheet bundle 16 is applied. The bonded cover sheet 3c is bent along both side edges of the sheet bundle 16, bound as a booklet 29, and discharged to a bookbinding tray.

  The control unit 9 included in the image forming apparatus 1 described above has a CPU, and executes each process by calling a bookbinding process execution program from the memory. The control means 9 receives a job end signal, sheet size information, and other information required for bookbinding and a command signal from the imposition driver 8. In each path of the image forming apparatus 1 and the bookbinding apparatus 11, a sheet sensor for detecting the sheet 3 to be conveyed is disposed, and a detection signal from each sheet sensor is sent to the control unit 9. Further, the bookbinding processing execution program includes a cutting operation control unit, an alignment operation control unit, an end face processing operation control unit, an adhesive application operation control unit, a binding operation control unit, and the like as subroutines.

From here, the image forming process and the bookbinding process will be described with reference to FIGS.
As shown in FIG. 4, in the image forming process of the cover 3c, first, the cover 3c is printed (S1). Next, the length of the printed cover 3c is adjusted by the cutting unit (S2), and the cover 3c having the adjusted length is stacked on the cover tray 28 (S3). In the image forming process of the paper 3a, the paper 3a is printed (S4).

  As shown in FIG. 4, in the bookbinding process, first, the paper 3a printed in the image forming process of the paper 3a is accumulated on the alignment tray 15 (S5). Next, the sheet 3a collected on the alignment tray 15 is aligned (S6). Next, the end surface 16a on the spine cover side is processed after the aligned sheet bundle 16 is bound (S7). Next, the adhesive A is applied to the end surface 16a of the sheet bundle 16 (S8). Next, the cover 3c supplied from the cover tray 28 is bonded to the end surface 16a of the sheet bundle 16 to which the adhesive A is applied (S9), and a booklet 29 is formed.

  In the step of processing the end surface 16a of the sheet bundle 16 (end surface processing step (S7)), as shown in FIG. 5, the plurality of rod-like bodies 20 of the end surface processing unit 17 are in contact with the end surface 16a of the sheet bundle 16, At least one edge in the thickness direction of each sheet 3 on the end surface 16a is cut and thinned, and each sheet 3 spreads in the thickness direction X so that a gap is formed between the sheets 3. Become. FIG. 5 shows an example in which both edges in the thickness direction of each sheet 3 on the end surface 16a of the sheet bundle 16 are cut, and a state before both edges are cut is indicated by a broken line in the drawing.

  Further, in the step of applying an adhesive to the end surface 16 a of the sheet bundle 16 (adhesive application step (S 8)), the adhesive A is applied to each sheet 3 on the end surface 16 a of the sheet bundle 16 by the application roller 25 of the adhesive application unit 22. Get into the gap between. Further, since the adhesive A is pushed into the end surface 16 a of the sheet bundle 16 by the convex portion 26 provided on the outer peripheral surface of the application roller 25, the adhesive A thereby causes each sheet 3 on the end surface 16 a of the sheet bundle 16 to be pressed. It goes into the gap between the two.

  According to the above-described embodiment, the end surface processing unit 17 cuts and thins both edges in the thickness direction of each sheet 3 on the end surface 16 a on the spine cover side of the sheet bundle 16, and between the sheets 3. By forming the gap, the adhesive A enters the gap of the end surface 16a when the adhesive A is subsequently applied by the adhesive application portion 22. That is, the permeability of the adhesive A is increased, the sheets 3 of the sheet bundle 16 are firmly bonded, and the bonding of the cover 3c performed at the subsequent stage of the adhesive application unit 22 is increased, so that the binding strength is increased. improves.

  Further, the end face processing unit 17 includes a plurality of rod-like bodies 20 projecting substantially radially on the outer peripheral surface of the rotating shaft 19, and when the plurality of rod-like bodies 20 process the end face 16 a of the sheet bundle 16. By contacting the end face 16a, at least one edge of each sheet 3 in the thickness direction of the end face 16a of the sheet bundle 16 is scraped and thinned, and each sheet 3 on the end face 16a is moved in the thickness direction X. It can be expanded. That is, a gap can be formed between the sheets 3 on the end surface 16a of the sheet bundle 16. In addition, since the protrusions 21 are provided on the outer peripheral surface of the rod-shaped body 20, the above-described scraping condition of both edges of each sheet 3 and the spreading condition of each sheet 3 become more remarkable.

  Further, the plurality of convex portions 26 are provided on the outer peripheral surface of the application roller 25 of the adhesive application unit 22 so as to be substantially spiral, that is, the outer peripheral surface of the application roller 25 has been subjected to uneven processing. Thus, the adhesive A can be applied so as to be pushed into the gaps between the sheets 3 on the end surface 16a of the sheet bundle 16, and the permeability of the adhesive A is increased.

DESCRIPTION OF SYMBOLS 3 ... Paper 11 ... Bookbinding apparatus 16 ... Paper bundle 16a ... End surface used as the back cover side of a paper bundle 17 ... End surface processing means (end surface processing part)
DESCRIPTION OF SYMBOLS 19 ... Rotating shaft 20 ... Rod-shaped body 21 ... Protrusion 22 ... Adhesive application means (adhesive application part)
23 ... Adhesive reservoir 24 ... Shaft 25 ... Application roller A ... Adhesive X ... Thickness direction of paper bundle Y: Direction orthogonal to thickness direction of paper bundle

Claims (3)

In a bookbinding apparatus provided with an adhesive application means for applying an adhesive to the end surface on the spine cover side after binding a sheet bundle,
Before the adhesive application means applies the adhesive, the edge of the sheet bundle contacts the end surface on the spine cover side and scrapes at least one edge in the thickness direction of each sheet on the end surface. A bookbinding apparatus comprising end face processing means for forming a gap between sheets. The end face processing means is
A rotating shaft extending in a direction perpendicular to the thickness direction of the sheet bundle;
A plurality of rod-shaped bodies provided on the outer peripheral surface of the rotating shaft and projecting in a substantially radial direction of the rotating shaft;
The bookbinding apparatus according to claim 1, further comprising a plurality of protrusions provided on an outer peripheral surface of the rod-shaped body. The adhesive application means includes
An adhesive reservoir for storing the adhesive;
The spine cover of the sheet bundle is arranged on the adhesive reservoir so as to be immersed in the adhesive accumulated in the adhesive reservoir, and rotates about an axis extending in a direction perpendicular to the thickness direction of the sheet bundle. An application roller for applying the adhesive on the side end surface;
The bookbinding apparatus according to claim 1, wherein the coating roller has a concavo-convex process on an outer peripheral surface thereof.

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