JPS616668A - Copying machine provided with bookbinding function - Google Patents

Abstract

PURPOSE:To enable copied papers to be stacked in a state of each fold of the papers perfectly coincident with each other and to be bound securely at the positions of the folds for installing a copied paper stacking tray having guide plates provided with a vibration mechanism. CONSTITUTION:The paper P havig a fold formed at the middle part is fed from the conveying roller 55 to paper binding section 57. The guude plate 64 of both guide plates 63, 64 of the section 57 is inclined, the papers P are moved one by one by the action of a laterally moving roller 67 into contact with both wall plates 65, 66. When the papers P are stacked at the position regulated with both guide plates 63, 64 to the quantity to be bound, the plate 66 is moved in the direcion of support shaft 62 to locate the folds of the papers P onto the edge of the receiving seat 59. Both guides 63, 64 are turned and the plates 63, 64 are vibrated with the vibrator 69 so as to allow the folds of the papers P with the edge of the receiving face 60. As a result, all the folds of the papers P can be just aligned bound.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a copying machine equipped with a bookbinding function, and particularly relates to a copying machine equipped with a bookbinding function that performs saddle stitch binding.

[Prior art]

Conventionally, when copying multiple copies of multiple sheets of original, a sorter or T-aligner is used to align the pages of the copied sheets, and a stitcher or the like is used to stitch the edges of the sheets. was.

However, when large-sized sheets such as A3 and B4 are end-stitched, they take up a large amount of space when spread between two pages, making them difficult to handle. Also, for large size paper,
In order to reduce the space required for storage, edge-stitched sheets are sometimes folded in half at the center, but folding the sheets all together in this way does not look good when stored. When the page is spread, it becomes difficult to see the information on the folded part.

Therefore, in order to enable saddle stitching, the copied sheets discharged from the copying machine are folded in half at the center to create a crease, and the sheets with these creases are stacked on a predetermined number of pages and bound at the crease. However, when folded sheets are piled up and bound, if the folds are not aligned accurately, a good double-page spread will not be obtained, resulting in extremely unsightly results.

[Purpose of the invention]

In view of the above-mentioned points, the present invention provides a copying machine equipped with a bookbinding function that, when stacking sheets with folds, allows the sheets to be stacked so that the folds of each sheet are perfectly aligned and to be bound reliably at the folds. This was done for the purpose of providing an opportunity.

[Structure of the invention]

The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 shows a copying machine 1 equipped with a bookbinding function according to the present invention.A contact glass 3 is provided in the upper part of a casing 2 of the copying machine 1, and is stretched horizontally. A recirculating document handling device 4 is arranged in the casing 2 above the glass 3. This document handling device 4 has a document tray 6 facing into the upper opening 5 of the casing 2, and this document tray 6 is located almost directly above the contact glass 3. An opening is formed in the lower surface of one end of the document tray 6, and a pair of pulleys 7.7 are wound around the opening, and a pair of pulleys 7, 7 are wound around the document tray 6, and the documents in the document tray 6 are moved rightward one by one starting from the lowest one. A delivery belt 8 for delivery is facing. A pair of separation rollers 9, 9 are provided on the right side of the delivery belt 8 to prevent the upper part of the two-sheet original document, and on the diagonally lower right side of this separating roller 9°9, the original document is separated. Large diameter to be reversed.
A roller 10 is provided. A plurality of rollers 11 and 12 are in pressure contact with the outer periphery of the roller 10 for conveying the document along the roller 10, and an arc-shaped passage 13 is formed along the outer periphery of the roller 10. . A horizontal passage 14 is formed from the lower end of the roller 10 to the contact glass 3, and a conveyor belt 16 wound around a pair of pulleys 15 is in pressure contact with the contact glass 3. There is. Further, the passage 13 near the separation rollers 9 and the contact glass 3
An inclined reversing passage 17 is formed which communicates with the end of the passageway 13.17, and a switching pawl member 1 is formed in the vicinity of the portion l111D-ra 9゜9.
8 are arranged.

A large-diameter roller 19 is disposed on the left side of the contact glass 3, and a plurality of rollers 20 and 21 are arranged around the outer periphery of the roller 19 to convey the original mD on the contact glass 3 along the roller 19. They are in pressure contact. Also,
An arcuate passage 22 is formed along the outer periphery of the roller 19. A passage 23 for returning original documents to the original tray 6 communicates with the rear end of this passage 22. A pair of rollers 24 24 are disposed at the end for discharging the originals in the passage 23 onto the original tray 6 .

In such a document handling device 4, a document tray 6 is provided.
If necessary, switch the switching claw member 18 from the illustrated position and run the conveyor belt 16 on the contact glass 3 in the opposite direction to move the original document onto the contact glass 3 , which has been exposed on one side. By conveying the document in the order of 13 and 17 through the passages 13 and 17, making one turn around the roller 10, and then reversing the document, the document is stopped on the contact glass 3 again, so that the back surface of the document can be exposed continuously.

A copying device 25 having a variable magnification function is disposed in the casing 2 below the contact glass 3, and this copying device 25 has an image forming section 26, which includes:
an optical system 2 that exposes the document on the contact glass 3;
A photosensitive drum 2 receives light from 7 to form an electrostatic latent image.
It has 8.

Various chargers, a developing section 26A, a transfer section 26B, a cleaning device, etc. are arranged around the photosensitive drum 28, but since these structures are similar to those of a general copying machine, their explanations will be omitted. .

A plurality of paper cassettes 29 are provided on the end surface of the casing 2.
．． 29... are mounted therein, and rollers 30, 30... are disposed within the casing 2 for sending out sheets of paper P one by one from each paper cassette 29 mounted thereon. Further, the paper P sent out from each paper cassette 29 is conveyed through a passage 31a, and each passage 31a joins to form a passage 31b.
It is arranged to reach the transfer section 26B. This passage 3
Conveyance rollers 33, 33, . . . are arranged at 1b. One end of the conveyor belt 32 faces near the transfer section 26B, and the transfer section 26B conveys the paper P onto which the toner image on the photoreceptor drum 28 has been transferred. A fixing section 34 is disposed at the other end of the conveyor belt 32, and is configured to fix the toner image on the paper P.

On the downstream side of the fixing section 34, there is a passage 36 that curves upward.
A reversing section 35 is provided with a reversing section 35, in which a conveying roller 37.37 is arranged. The reversing unit 35 is configured to reverse the sheet P by feeding the sheet P introduced from the leading end from the rear end. Further, a switching claw member 38 is disposed near the reversing section 35, and supplies the paper P from the fixing section 34 to the reversing section 35 or a paper folding section 45, which will be described later, provided in another casing 44. It looks like this. An intermediate tray 39 is disposed at the bottom of the casing 2, and is configured to temporarily store the paper P that has been introduced into the reversing section 35 and reversed. For this purpose, a passage 40 equipped with conveying rollers 41 is provided between the reversing section 35 and the intermediate tray 39. Note that it is also possible to directly introduce the paper P from the fixing section 34 into the intermediate tray 39 from the passage 40 without introducing it into the reversing section 35 .

At the front end of the intermediate tray 39, there is a roller 43 for feeding out the sheets P in the intermediate tray 39 one by one starting from the uppermost one.
．． 43... are arranged, and the paper P sent out from the intermediate tray 39 is again supplied to the transfer section 26B via a passage 42 that joins the passage 31b.

In order to perform double-sided copying using the copying apparatus 2 described above, the switching claw member 38 is raised and the paper P from the fixing section 34 is transferred to the reversing section 35.
2. Then press the operation button (not shown). Then, an electrostatic latent image is formed on the photoreceptor drum 28 by the light from the optical system 27 that scans the original document on the contact glass 3, and this electrostatic latent image is visualized by the toner from the developing section 26A. Ru. On the other hand, paper P from the selected paper cassette 29 is supplied to the transfer section 26B via paths 31a and 31b, and the toner image on the photoreceptor drum 28 is transferred thereto. The paper P onto which this toner image has been transferred is transferred to the fixing section 3.
After the toner image is fixed in step 4, the toner image is introduced into the passage 36 of the reversing section 35. Then, completely reach the rear end of the paper P in the path 3.
6, reverse the conveyance roller 37.37,
Paper P17) This paper P is introduced into the passage 40 from the rear end.
is fed into the intermediate tray 39. The paper P stored in this intermediate tray 39 has an image transferred onto its upper surface. In this way, once a predetermined number of single-sided copied sheets P are stored in the intermediate tray 39, from now on, the sheets P in the intermediate tray 39 are sent out one by one and transferred again to the transfer section 26'B.
to copy the image onto the back side of the paper P. At this time, the switching claw member 38 has been switched to the state shown in FIG.
5.

If copying is to be performed on only one side of the paper, the switching claw member 38 may be set in the state shown in FIG. 1 from the beginning.

The paper folding unit 45 is for making a crease in advance in the center of the paper P to be saddle-stitched,
This paper folding section 45 is provided inside the casing 44 of a bookbinding device 46 that can be attached to and detached from the casing 2, and as shown in detail in FIG. It has nine conveyance rollers 47,48. Furthermore, an incomplete circumferential roller 49 located downstream of both rollers 47 and 48 can be joined to one of the conveyor rollers 547. A passage 50 is formed on the downstream side of these rollers 47 and 48, and the base end of this passage 50 is inclined forwardly upward in the direction of the joint of the roller 47 and the intermittent roller 49, so that the paper P is It is designed to be caught in the joint of the rubber 47 and 49. Further, a pair of sponge rollers 51 and 51 are disposed at the tip of the passage 50, and a passage 52 is roughly formed at the tip of the rollers 51 and 51. Further, a sensor 53 for detecting the presence or absence of paper P is disposed on the side of the passage 52.
3 detects the paper P, the incomplete circumferential roller 49 rotates once in the direction of the arrow. A stopper 54 that can rotate around a shaft 54a and take a retracted position faces inside the passage 52 on the downstream side of the sensor 53, and a pair of conveyance rollers 55, 55 are provided at the tip of the passage 52. is installed. A plurality of stoppers 54 may be provided according to the size of the paper P, or they may be moved according to the size of the paper P being used.

The sponge rollers 51 and 51 serve to press the paper so that only the vicinity of the center of the paper P is bent toward the joint between the rollers 47 and 49 when the missing edge of the paper P is in contact with the stopper 54. , the conveyance force is weak,
Moreover, the circumferential speed of the sponge roller 51.51 is 47.
It is desirable that the circumferential speed be a little faster than the circumferential speed of 48. Further, a plurality of pairs of sponge rollers 51, 51 may be provided depending on the size of the paper P.

A non-binding tray 56 is disposed in the casing 44 on the downstream side of the conveyance rollers 55, 55, and is rotatable about a shaft 56a between a solid line position and a chain line position in FIG. The non-binding tray 56 receives unfolded sheets P that do not need to be bound from the paper folding section 45 at the chain line position, and also receives sheets P to be bound from the paper folding section 45.
When being transported, it rises to the solid line position and retreats.

A paper binding section 57 is provided in the casing 44 below the non-binding tray 56.

The paper binding unit 57 is arranged to be movable up and down, and includes a binding tool 58 such as a stapler that binds the sheets of paper P using a stopper such as a stable, and a seat 59 arranged below the binding tool 58. This receiver has a receiving surface 60 at the upper end of the seat 59 so that the folds of the paper P folded in the center by the paper folding unit 45 are aligned and the paper P is stacked one on top of the other. It is formed into a sharp edge shape to make it easier to use.

On both sides of the seat 59, a pair of flat guide plates 63 and 64, which constitute the bottom of the deposition tray 62, are attached to the supporting shaft 61 in the vicinity of the receiving surfaces 60 and 60 of the seat 59, respectively.
It is rotatably supported by.

These guide plates 63, 64 are movable between the position shown by the solid line and the position shown by the chain line in FIG.

and the guide plate 63. ．． 64 is the vibration mechanism 69.6
9 is attached. This vibrator fi69°69 can give slight vibrations up and down to the guide plates 63 and 64, and for example, a rotary vibrator having an eccentric rotor or other suitable vibrating machine can be used. Board 63.
64 or connected via a connecting member.

On one side of one of the guide plates 64, as shown in FIG. A wall plate 66 is provided upright and movable in a direction perpendicular to the axial direction of the support shaft 62. This configuration is wall plate 6
This is achieved by forming the base of 6 and the guide plate 64 into a comb-teeth shape that meshes with each other. Note that this wall plate 66 can take a retracted position as shown by the chain line in FIG. Further, on the outside of the wall plate 65, there are width adjusting rollers that roll in pressure contact with the paper P on the guide plate 64 and bring the two adjacent sides of the paper P into contact with both wall plates 65 and 66. 67 is provided protrudingly.

The axis of this width offset roller 67 is arranged to intersect with the axis of the support shaft 62, and the width offset roller 67
is capable of approaching and separating from the paper P on the guide plate 64.

A tray 68 is disposed below the guide plate 64, as shown in detail in FIG.
1. They face each other at θ2. And this angle θ1
．． By setting θ2 to an appropriate angle, the edge-tied paper P1 that has fallen off the guide plate 64 is transferred to the tray 68.
The saddle-stitched sheets P2 are aligned along the other side 70 of the tray 68.

Saddle-stitch binding of sheets P by the bookbinding device 46 comprising the sheet folding section 45 and sheet binding section 57 described above will be described.

The paper P conveyed from the fixing section 34 to the paper folding section 45
The tip of the conveyor roller 47, 48 and sponge roller 51
, 51, and comes into contact with a stopper 54, which is arranged in advance to match the size of the paper P, and stops. After that, the sponge rollers 51 and 51 continue to rotate, but their conveying force is weak, so there is no risk that the roller 11P will buckle.

Then, as the paper P is subsequently transported by the transport rollers 47 and 48, the paper P begins to warp near the end of the path 50.

At this time, the incomplete circumferential roller 49 rotates once in response to a signal from the sensor 53 that detects the paper P, and the bent paper P is caught between the conveyance roller 47 and the roller 49, creating a crease in the center of the paper P. form. Thereafter, the notch part of the notch roller 49 faces the conveyance roller 47, but before this state is reached, the stopper 54 retreats from the passage 52, so the notch part of the notch roller 49 opposes the conveyance roller 47. When the conveying force disappears, the paper P with a crease formed in the center by the conveying force of the sponge rollers 51, 51 is supplied to the paper binding section 57 from the direction of the conveying rollers 55, 55.

When paper P with a crease formed in the center is supplied, both guide plates 63 and 64 of the paper binding section 57 are arranged so that the leading end of the guide plate 64 is positioned slightly downward, as shown by the solid line in FIG. are located in the same plane and are inclined. Note that, at this time, the non-binding tray 56 is located at the solid line position in FIG.

In this state, the sheets P fed onto both guide plates 63 and 64 are moved one by one by the action of width adjusting rollers 67 to both wall plates 63 and 64.
5 and 66. In this way, all the sheets P constituting one booklet are placed on both guide plates 63.
．． 64, the wall plate 66 is moved in the direction of the support shaft 62 so that the fold of the MP is received (button seat 5
Move the paper P so that it is located on the edge 9. Then, both the guide plates 63 and 64 are rotated to the position indicated by the chain line in FIG. The vibrating mechanisms 69 and 69 are actuated to give vibration to the guide plates 63 and 64. As a result, the paper P moves slightly so that both sides of the paper P are aligned along the guide plates 63 and 64 with the crease as the boundary, and the crease is placed at the apex of the seat 59 (FIG. 5(A)).

Then, the binding tool 58 is lowered and the sheets P are bound along the folds of the sheets P. Finally, one guide plate 63 is rotated to the solid line position and the wall plate 66 is retracted, so that the saddle-stitched sheets P slide down along the guide plate 64 and are accumulated in the tray 68.

〔Effect of the invention〕

As explained above, the present invention provides a copying machine having a bookbinding function for saddle-stitching sheets after copying and binding the sheets into a book, by providing a stacking tray for stacking copied sheets with a crease in the center. The bottom of the tray is composed of front and rear guide plates that can be bent and rotated into a mountain shape at the middle part in the direction in which the paper enters. One of the guide plates is provided with a sliding wall plate for pushing the edges of the stacked sheets to position the center fold at the binding section, and the guide plate is provided with a vibration plate. Since it is equipped with a vibration mechanism that gives a vibration, when folded sheets are piled up and bound at the folds, the folds of all the sheets for one book can be neatly aligned, and there is no need to worry about misalignment or poor appearance after binding. It is possible to bind the book without damaging it.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing an embodiment of a copying machine according to the present invention, FIG. 2 is an enlarged view of the paper folding section of FIG. 1, and FIG.
4 is a plan view of the main part of FIG. 3, FIG. 5 is a front view showing the relationship between the paper binding section and the tray shown in FIGS. 3 and 4, FIG. 5(A) shows the paper alignment state, and FIG. 5(B) shows the same u1 output state. DESCRIPTION OF SYMBOLS 1... Copying machine, 2... Casing, 3... Contact glass, 4... Recirculating original handling device, 6...
- Original tray, 25... Copying device, 26... Image forming section 1.26A... Developing section, 26B... Transfer section, 28.
... Photoreceptor, 29 ... Paper cassette, 34 ... Fixing section, 35 ... Reversing section, 39 ... Intermediate tray, 44 ...
...Casing, 45... Paper folding section, 49... Circumferential gap roller, 54... Stopper, 56... Non-binding tray, 57... Paper binding section, 58... Binding tool, 59
...The receiver is the seat, 62...The tray for depositing, 63.64.
... Guide plate, 65.66 ... Wall plate, 67 ... Width adjustment roller, 68 ... Tray, 69 ... Vibration mechanism, D.
...manuscript, P...paper.

Claims (1)

[Claims] In a copying machine that has a bookbinding function that saddle-stitches and binds sheets after copying, a stacking tray for stacking copied sheets with a crease in the center is provided. The bottom part is made up of front and rear guide plates that can be bent and rotated into a mountain shape, and a catch is installed at the lower part between the front and rear guide plates, and a binding tool is installed opposite to each other at the upper part of the same. A pushing wall plate is slidably provided to push the edge of the stacked sheets to position the central fold at the binding portion, and a vibration mechanism for applying vibration to the guide plate is attached. A copying machine with a bookbinding function.