JPS616669A - Paper binding device of copying machine provided with bookbinding function - Google Patents

Abstract

PURPOSE:To enable easy saddle switching of copied papers and to be stored in a prescribed storage palce by installing a binding device having a receiving seat for stacking the middle parts of the papers on the receiving face and a binder attachable to and separable from the receiving face on the upper side of the device and inclining the receiving face. CONSTITUTION:A pressing member 52 set above a lower mold 50 for forming a fold is lowered and presses the paper P placed on the protuberance 51 like an edge, and it is elastically deformed along the protuberance to form a fold at the middle part of the paper. When pushing members 78 pushed one of the longer sides of the papers in the direction of the paper binding part 7, and the papers P are pushed out on the inclined receiving face 72 of the receiving seat 71 of the part 70, the papers P are prevented from sliding down with a stopper 75 in the state of the middle parts of the papers P located on the receiving face 72 and it is supported on the receiving seat 71. When the papers P necessary for saddle stitching are placed on th receiving seat 71, the binder 73 executes saddle stitching of the papers P. After this saddle stitching, the stopper 75 is withdrawn, the paper P slides down by its own weight, and the would papers are stored on a tray.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a copying machine equipped with a bookbinding device and capable of saddle-stitching sheets, and particularly to a sheet-stitching device suitable for saddle-stitching sheets. Regarding.

[Prior art]

Conventionally, when copying multiple copies of multiple sheets of original, a sorter or collating device 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 paper with a large rise such as A3 or B4 is end-stitched, it takes up a large amount of space when spread, making it difficult to handle. Also, for large size paper,
In order to reduce the storage space, edge-stitched sheets are sometimes folded in half at the center, but folding the sheets all together in this way also makes them look unsightly when stored (because of the folding pattern). When opening a double-page spread, it becomes difficult to see the information on the folded part.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a paper binding device for a copying machine equipped with a bookbinding function that stacks sheets with a crease formed in the center in advance and performs saddle stitching. do.

[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, in which a contact glass 3 is provided in the upper part of the casing 2 of the copying machine 1!11 and is stretched horizontally. A recirculating document handling device 4 is arranged in the casing 2 above the contact 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. A large diameter roller 10 for reversing 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, 15 is in pressure contact with the contact glass 3. Further, an inclined reversing passage 17 is formed which communicates the passage 13 near the separation rollers 9 and the end of the contact glass 3, and the passage 17 in the vicinity of the separation rollers 9, 9 is connected to the end of the contact glass 3. Switching pawl member 18 for closing either one of the passages 13, 17
is installed.

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 WiD on the contact glass 3 along the roller 19. They are in pressure contact. Further, an arc-shaped passage 22 is formed along the outer circumference of this roller 19, and a passage 23 for returning the original document to the original tray 6 communicates with the rear end of this passage 22. A pair of rollers 24 24 are disposed at the rear end of the passage 23 for discharging the originals from 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 125 with a variable magnification function is disposed in the casing 2 below the contact glass 3, and the copying device 25 has an image forming section 26, which It has a photosensitive drum 28 that receives light from an optical system 27 that exposes the document on the glass 3 to form an electrostatic latent image.

Various chargers, a developing section 26A, a transfer section 26B1, a cleaning device, and the like are arranged around the photosensitive drum 28, but since these structures are similar to those in 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, 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
Conveying rollers 33, 33, . . . are arranged around 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 pawl member 38 is disposed near the reversing section 35, and the sheet P from the fixing section 34 is transferred to the reversing section 35 or to a paper folding section 45 (described later) 1' provided in another casing 44. supply. 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, the reversing section 35 and the intermediate tray 39
A passage 40 with conveying rollers 41 is arranged therebetween. 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 C transfer section 26B via paths 31a and 31b, and the toner image on the photosensitive drum 28 is transferred thereto. The paper P to which this toner image has been transferred has the toner image fixed thereon in the fixing section 34, and then passes through the path 36 of the reversing section 35.
be introduced within. When the rear end of the paper P is completely introduced into the passage 36, the conveying rollers 37, 37 are reversed, the paper P is introduced from the rear end into the passage 40, and the paper P is fed into the intermediate tray 39. do. The paper P stored in the 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 1-lay 39 will be sent out one by one and supplied to the transfer section 26B again. The image is copied 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.
supplied to

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

The paper folding section 45 is for forming a fold in advance in the center of the paper P that covers the saddle-stitched book. This paper folding section 45 is provided in a casing 44 of
A pair of conveyance rollers 47 and 48 are provided at the entrance.

A horizontal passage 49 is provided downstream of the rollers 47 and 48.
As shown in detail in FIG. 2, in the middle of this passage 49, a lower mold 50 for forming a crease is disposed, the upper end of which is formed an edge-like protrusion 51 on which the paper P is placed. It is set up. This lower mold 50 for forming a crease is disposed so as to extend in a direction across the passage 49, that is, in a direction parallel to the short side of the paper P. It is located at approximately the same height as the lower surface of 49.

On the other hand, above the edge-like protrusion 51 of the lower die 50 for forming a crease, a pressing body 52 is supported by a member (not shown) so as to move up and down so as to move toward and away from the edge-like protrusion 51. It is arranged transversely to the passageway 49. The pressing body 52 has a rectangular longitudinal section and has a length that corresponds to almost the entire area of the edge-like protrusion 51 of the lower mold 50 for forming creases. This pressing body 52 is
At least the surface member is made of an elastic member such as sponge or urethane, and can be easily elastically deformed when pressed against the edge-shaped protrusion 51.

Conveyance rollers 53, 53 are disposed in the passage 49 on the downstream side of the lower die 50J for forming the crease, and
3.53 is movable in the vertical direction so that it can take a paper transport position shown by a solid line in FIG. 1 and a retracted position shown by a chain line in FIG. A stopper 54 that can rotate around a shaft 54a and take a retracted position faces inside the passage 49 on the downstream side of both rollers 53 and 53, and a pair of conveyance rollers 55 are provided at the tip of the passage 49. .55 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.

A non-binding tray 56 that can rotate around a shaft 56a between a solid line position and a chain line position is disposed in the casing 44 on the downstream side of the conveyance rollers 55, 55. receives unfolded sheets P that do not need to be bound from the paper folding section 45 at the chain line position, and rises to the solid line position and retreats when sheets P to be bound are conveyed from the paper folding section 45.

A paper binding section 57 for edge binding is provided in the casing 44 below the non-binding tray 56. The paper binding section 57 includes a binding tool 58, such as a stapler, which is arranged to be movable up and down, and which binds the sheets of paper P using a stopper such as a stable, and a receiving seat 59, which is arranged below the binding tool 58.
The receiving surface 60 at the upper end of the receiving seat 59 is formed into an acute edge shape. Further, a pair of guide plates 63 and 64 are arranged on both sides of the receiving seat 59, one of which is fixedly arranged in an inclined state, and the other guide plate 64 is arranged as a guide plate. It is rotatably supported by a support shaft 62 so that it can take the solid line position where it is on the same surface as the plate 63 and the chain line position where the end-stitched paper P slides down into the tray 68.

A wall plate 65 that is movable in the direction of the arrow is erected on one side of the guide plate 64, as shown in FIG.
A wall plate 66 that is movable in a direction perpendicular to the axial direction of the shaft 62 is erected at the tip of the guide plate 64 .

This configuration is achieved by forming the base of the wall plate 66 and the guide plate 64 into a comb-like shape that engages with each other. Note that this wall plate 66 can take a retracted position when the guide plate 64 takes the chain line position. Furthermore, on the outside of the wall plate 65, there is a roller 67 with an uneven width, which is moved in pressure contact with the paper P on the guide plate 64 and brings the two adjacent sides of the paper into contact with both the wall plates 65 and 66. is installed protrudingly. The axis of the width shifting roller 67 is arranged to intersect with the axis of the support shaft 62, and the width shifting roller 67 can move toward and away from the paper P on the guide plate 64. .

A paper binding unit (paper binding device) 70 for saddle stitching is disposed on the side of the fold forming lower die 50 of the paper folding unit 45 . The paper binding unit 70 has a receiving seat 71, as shown in detail in FIG. It is formed into an acute edge shape so that the sheets P can be stacked one on top of the other. The receiving surface 72 of the receiving seat 71 has its longitudinal direction located in the same vertical plane as the longitudinal direction of the edge-like protrusion 51 of the lower mold 50 for forming creases, and the one closer to the lower mold 50 faces upward. It is arranged at an angle so that it is located at an angle. The inclination angle of this receiving surface 72 is set so that the paper P slides on this receiving surface 72. Further, above the receiving surface 72, a binding tool 73 such as a stapler that binds the sheets of paper P with a fastener such as a staple is disposed so as to be movable up and down. Further, a stopper 75 that prevents the paper from sliding off the receiving surface 72 is movably arranged on the end surface 74 below the receiving seat 71.

On the other hand, on the opposite side of the sheet binding section 70 of the sheet folding section 45, a pair of cylinder devices 76.7 are arranged horizontally.
6 are arranged at intervals in the longitudinal direction of the paper P,
The tip of the piston rod 77 of each cylinder device 76 is opposed to the side edge of the paper P stopped by the stopper 54,
A pushing member 78 that pushes in the direction is provided in a protruding manner.

A tray 79 is provided on the lower surface of the casing 44 to receive the saddle-stitched sheets P that have slipped from the receiving surface 72 of the receiving seat 71.

To perform edge-stitch binding of paper P using the above-described configuration,
The stopper 54 of the paper folding section 45 is retracted from the passage 49 to guide the paper binding section 57 for edge binding without stopping the MP conveyed from the fixing section 34 to the paper folding section 45 at the paper folding section 45. Transfer onto plates 63,64. At this time, the movable guide plate 64 is in the solid line position shown in FIG.
are located on the same plane. Then, the conveyance roller 55.
When the paper P from 55 is conveyed onto both guide plates 63° and 64, the two orthogonal sides of the paper P are pressed against both wall plates 65° and 66, which are arranged in advance to match the size of the paper P. The width adjusting roller 67 rotates in a sliding motion to position the end of the paper P on the receiving seat 59. When all the sheets P necessary for edge-stitching bookbinding have been placed on both guide plates 63 and 64 in this manner, the binding tool 58 is lowered to edge-stitch the sheets P. After this edge binding, the paper P is moved by its own weight to the guide plate 63.6 by rotating the guide plate 64 to the chain line position in FIG.
4 and is stored in the tray 68.

On the other hand, in order to saddle-stitch the paper P, the stopper 54 arranged to match the size of the paper P faces the passage 49, and the paper P conveyed from the fixing unit 34 to the paper folding unit 45 is The tip of the conveyor roller 47.48.53.53
After passing through, it comes into contact with a stopper 54 and stops. Paper P
When the tip of the roller comes into contact with the stopper 54 and stops, a sensor (not shown) detects this and the conveyor 0-ra 47, 48, 53
53 is stopped. In this state, the central part of the paper is placed on the edge-shaped protrusion 51 of the lower die 50 for forming folds, and the rear end of the paper P is placed on the conveying roller 47.
, 48. After that, the lower die 5 for forming the crease
The pressing body 52 facing above 0 descends and presses onto the paper P placed on the edge-shaped protrusion 51 of the lower die 50 for forming a crease. Since this paper P is received by the edge-shaped protrusion 51, the pressing body 52 is elastically deformed along the edge-shaped protrusion 51, and forms a crease at the center of the paper sheet P. Then, the pressing body 52 rises and the edge-shaped protrusion 5
1, the conveyance rollers 53, 53 separate from each other as shown by the chain lines in FIG. 1, and the paper P becomes free. Therefore, the piston rod 77 of each cylinder device 76 located on the side of the paper P is extended, and one long side of the paper P is pushed in the direction of the paper binding section 70 by the pushing member 78 at the tip. The paper P is pushed onto the inclined receiving surface 72 of the receiving seat 71 of the paper binding section 70. Then, the paper P is supported on the receiving seat 71 with its center portion positioned on the receiving surface 72 and prevented from sliding down by the stopper 75. Therefore, by repeating the above-described operation, the sheets P are sequentially supplied from the paper folding section 45 to the paper binding section 70 and stacked on the receiving seat 71, so that all the sheets P necessary for saddle stitching are placed on the receiving seat 71. When the sheets P are placed on the sheet P, the binding tool 73 is lowered (attached to the receiving surface 72 of the receiving seat 71) to saddle-stitch the sheets P. After the saddle stitching, the stopper 75 is retracted from the position where it contacts the receiving seat 71, so that the saddle-stitched sheets P slide down on the receiving seat 71 due to its own weight and are stored in the tray 79.

Note that the conveyance 0-ra 53° 53 of the paper folding section 45 mentioned above
When the paper P is conveyed to the paper binding section 70, they come into contact with each other in preparation for the next paper P, and the piston rod 77 and stopper 75 of each cylinder device 76 also return to their original states.

As described above, according to this embodiment, both saddle stitching and edge stitching of the sheets P can be easily performed.

FIG. 4 shows another embodiment of a paper binding device 70 for saddle-stitching, in which the stopper 75 in FIG. It is configured to be rotatable about 71a as an axis so that it can assume a horizontal position shown by a solid line in FIG. 4 and an inclined position shown by a chain line.

According to such a configuration, the receiving seat 71 is kept in a horizontal state, the paper P is received from the paper folding unit 45, the paper P is saddle stitched in the horizontal state, and then the receiving seat 71 is set in an inclined state. When rotated, the saddle-stitched sheets P slide down on the receiving surface 72 of the receiving seat 71 due to its own weight and are stored in the tray 79.

The embodiment shown in FIG. 4 can also provide the same effects as the first embodiment described above. Note that the paper folding section 45
The configuration of is not limited to that shown in FIGS. 3 and 4.

〔Effect of the invention〕

As explained above, the paper binding device in a copying machine equipped with a bookbinding function according to the present invention has a receiving seat whose upper surface is used as a receiving surface for stacking the central part of sheets, and a receiving surface of this receiving seat. Since the receiving surface of the seat is configured such that its longitudinal direction can be inclined with respect to the horizontal plane, the paper on the receiving seat can be easily inserted into the binding device. This has the effect that, after being bound, it can be slid down on the receiving surface of the receiving seat and stored in a predetermined storage location.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing an embodiment of a copying machine to which the paper binding device according to the present invention is applied, FIG. 2 is a detailed plan view of the vicinity of the guide plate shown in FIG. 1, and FIG. FIG. 4 is an enlarged perspective view of the binding device (paper binding section), which is similar to FIG. 3 showing another embodiment of the present invention. 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, 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, 46... Book binding device, 49... Passage, 50... Lower mold for forming folds,
52... Pressing body, 54... Stopper, 56... Unbound tray, 57... Paper binding section, 58... Binding tool, 59... Receiving seat, 63.64... Guide Board, 7
0... Paper binding part, 71... Receiving seat, 72... Receiving surface, 73... Binding tool, 75... Stopper, 79...
...Tray, D...Document, P...Paper. Applicant's agent Kiyoshi Inomata Figure 3 Atsushi Figure 4

Claims (1)

[Scope of Claims] 1. It has a receiving seat whose upper surface is used as a receiving surface for stacking the center portion of sheets, and a binding tool arranged so as to be able to approach and separate from the receiving surface of this receiving seat. A paper binding device for a copying machine having a bookbinding function, characterized in that the receiving surface of the receiving seat is configured such that its longitudinal direction can be inclined with respect to a horizontal plane. 2. The receiving surface of the receiving seat is always arranged at an angle, and a stopper for preventing the sheet from sliding off the receiving surface is arranged on the lower end surface of the receiving seat so as to be movable forward and backward. The paper binding device according to item 1. 3. Claim 1, wherein the receiving seat is rotatable so that the receiving surface can take a horizontal position and an inclined position.
Paper binding device described in Section 1.