JPS60250367A - Form folding method in copying machine provided with bookbinding function - Google Patents

Abstract

PURPOSE:To form a fold after carrying a form exactly, and to execute efficiently saddle stitching bookbinding by forming the fold so as to be orthogonal to the carrying direction of the form, in the center part of the form. CONSTITUTION:A form folding part 45 is provided on the downstream of a fixing part, and a missing periphery roller 49 is placed so as to be joinable in a carrying roller 47. Also, sponge rollers 51, 51, a form detecting sensor 53, stopper 54 which can move forward and backward freely, etc. are provided on a path 50. A form which has passed through the fixing part goes into the folding part 45, abuts on the stopper 54 and stops temporarily; but in that case, the form starts to bend in the direction of a joint part at the end of the path 50 by a feed action of the rollers 47, 48. In this case, the sensor 53 detects the form and brings the missing periphery roller 49 to one rotation, a fold is formed by the rollers 47, 49, and the form is fed to a stitching part. Therefore, the form is carried exactly, the fold is formed, and saddle stitching bookbinding can be executed easily.

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 relates to a sheet folding method for forming folds in advance on the 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, edge-stitching large-sized sheets such as A3 and B4 takes up a large amount of space when spread, making it difficult to handle. Also, for large size paper,
In order to save space when storing, edge-stitched sheets are sometimes folded in half in a medium heat section, but folding the sheets all at once in this way does not look good when stored, and the folded paper is This makes it difficult to see the information on the folded part when making double-page spreads.

In order to overcome this problem, the sheets may be saddle-stitched, but in order to saddle-stitch the sheets, it is necessary to form a crease in the center of the sheets in advance. However,
The formation of folds on the paper is closely related to the conveyance of the paper and the document.

[Object of the Invention] In view of the above-mentioned points, the present invention provides a bookbinding function that efficiently conveys paper and manuscripts in relation to various operations and also forms creases on the paper.
The purpose of this invention is to provide a paper folding method for a copying machine.

[Structure of the invention]

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

FIG. 1 shows a copy 111 having a bookbinding function according to the present invention, in which a contact glass 3 stretched horizontally is provided in the upper part of the casing 2 of the copy 1fi1. A recirculating document handling device 4 is arranged in the upper casing 2. 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 at one end of the document tray 6 facing downward, and a pair of pulleys 7. A delivery belt 8 for delivery in the right direction faces. 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 this roller 10 for conveying original documents along this roller 10.
An arcuate passage 13 is formed along the outer periphery.

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 claw member 18 that closes either one of the roads 13 and 17
is installed.

A large-diameter roller 19 is disposed on the left side of the contact glass 3, and a plurality of rollers 19 are arranged on the outer periphery of the contact glass 3 to transport the document on the contact glass 3 along the roller 19. Rollers 20° and 21 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 ends 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. Then, the document is conveyed in the order of passages 13 and 17, rotated around the roller 10, turned over, and then stopped on the contact glass 3 again, so that the back side of the document can be exposed continuously.

A copying device 25 with a variable magnification function is disposed in the casing 2 below the contact glass 3, and this copying device 25 has a developing 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 device, a cleaning device, etc. 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 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 3ia merges into a passage 31b.
It is arranged to reach the developing section 26. This passage 31
Conveying rollers 33, 33, . . . are arranged at b.

One end of a conveyor belt 32 faces near the developing section 26, and the developing section 26 conveys the paper P onto which the toner image on the photoreceptor drum 27 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 images 1 to 1 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 provided 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.
．． 4.3... are arranged, and the paper P sent out from the intermediate tray 39 passes through a passage 42 that merges with the passage 31b.
The toner is supplied again to the developing section 26 via the.

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 27 by the light from the optical system 27 that scans the original document on the contact glass 3, and this electrostatic latent image is made visible by toner from the developing device. . On the other hand, the selected paper cassette 29
The paper P from - passes through the passages 31a and 31b to the developing section 2.
6, and the toner image on the photosensitive drum 27 is transferred thereto. The paper P to which this toner image has been transferred has the toner image fixed thereon by the fixing section 34, and is then introduced into the path 36 of the reversing section 35. When the rear end of the paper P is completely introduced into the passage 36, the conveyance 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 intermediate tray 39
The sheets P in 9 are sent out one by one and supplied again to the developing section 26 to copy the image on the back side of the MiP. At this time, the switching claw member 38 has been switched to the state shown in FIG.
The paper P on which both sides have been copied is supplied from the fixing section 34 to the paper folding section 45 .

If copying is to be performed on only one side of the paper, it is sufficient to set the switching claw member 38 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.
A pair of conveyance rollers 47 and 48 are provided at the entrance. Furthermore, an incomplete circumferential roller 49 located downstream of both rollers 47 and 48 can be joined to one of the conveying rollers 47. A crease passage 50 is formed on the downstream side of these rollers 47 and 48, and the base end of this passage 50 is inclined upward in the direction of the joint between the roller 47 and the cut-circumferential roller 49, so that the paper P can pass through both rollers. It is designed to fit into the joint of 47.49. Furthermore, a pair of sponge rollers 51 and 51 are arranged at the tip of the passage 50,
A passage 52 is further formed on the tip side of the rollers 51, 51. Further, a sensor 53 for detecting the presence or absence of paper P is disposed on the side of the passage 52, and when the sensor 53 detects the paper P, the incomplete circumferential roller 49 rotates once in the direction of the arrow. It has become. A stopper 54 is provided in the passage 52 on the downstream side of the sensor 53, and is rotatable about a shaft 54a to take a retracted position.
A pair of conveyance rollers 55, 55 are arranged at the tip of the passage 52. A plurality of the stoppers 54 may be provided depending on the size of the paper P, or they may be used.
It may be arranged to move according to the size of the paper P that is present.

The sponge rollers 51, 51 serve to press down the paper so that only the vicinity of the center of the paper P is bent in the direction of the joint between the rollers 47 and 49 when the leading edge of the paper P is in contact with the stopper 54. , the conveyance force is weak,
Moreover, the peripheral speed of the sponge roller 51.51 was -547 on both days.
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.

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

No binding] - A paper binding section 57 is provided in the casing 44 below the lay 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 with a stopper such as a staple, and a receiving seat 59 arranged below the binding tool 58. The receiving faces 60 at the upper ends of the five receiving seats are formed at acute angles so that the folds of the paper P folded at 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 in the shape of an edge.
The receivers are provided on both sides of the seat 59, respectively.
A pair of flat guide plates 63, 64 are rotatably supported by supports @61, 62 in the vicinity of the surface 60, and each guide plate 63° 671 corresponds to the solid line 1 in FIG.
It is movable between upright and chain line positions.

The guide plate 61 on the other side! A fixed wall plate 65 is erected on one side of I, as shown in FIG.
A wall plate 66 that is movable in a direction perpendicular to the axial direction of the support 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 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-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 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 θ
, θ2 to an appropriate angle, the edge-stitched paper P1 that has slipped off the guide plate 64 is placed in 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 paper P 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 accordance with the timing according to the signal from the sensor 53 that detects the paper P, and the bent paper P is caught between the conveyance roller 47 and [1-949, and the center portion of the paper P is form a crease. Thereafter, the missing portion of the missing circumferential roller 49 opposes the conveying roller 47, but before this state is reached, the stopper 54 retreats from the passage 52, so that the missing circumferential portion of the missing circumferential roller 49 opposes the conveying roller 47. When the conveying force disappears, the sponge roller 51.51
The sheet P with a crease formed in the center by the conveying force is supplied to the sheet binding section 57 from the direction of the conveying rollers 55 and 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. It is located on the same plane and is 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 sheet at a time by the action of the opening 67 to
5.6.6. In this way, all the sheets P constituting one booklet are placed on both guide plates 6.
3. After the paper P is stacked with its position regulated on the paper P, the wall plate 66 is moved in the direction of the support shaft 62, and the fold of the paper P is aligned with the receiving seat 5.
The paper P is moved so that it is located on the two edges. Then, both the guide plates 63 and 64 are rotated to the chain line position shown in FIG. Then, lower the binding device 58 and insert the paper P along the fold line of the paper P.
Bind. 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.

Saddle stitching of the paper P can be performed in this way, but the conveyance direction of the paper P in this embodiment is
The direction is perpendicular to the short side of the paper, that is, vertical feeding. Further, contrary to this vertical feeding, the conveying direction perpendicular to the long side of the paper P is called insertion feeding.

Next, the reason for performing the vertical feeding in the above-described embodiment will be explained.

When the paper size is twice the original size, in order to saddle-stitch the paper P, it is necessary to reverse the conveyance directions of the original and the paper P. Therefore, when the document tray is fed vertically, the paper P is fed horizontally, but since document 1] may be copied on either the left or right half of the paper P,
Depending on the number of pages of the document, the original 4RD must be swung left and right with respect to its transport direction, or the paper P must be swung left and right with respect to its transport direction. However, a complicated configuration is required to sort the document sheets or sheets P into left and right sides in this way.

On the other hand, if the original paper is fed horizontally, the paper P is fed vertically, but in this case, the direction in which the original paper is shifted when copying onto the paper P matches the conveyance direction of the original paper and the paper P. Therefore, in order to align the document tray and the paper P, there is no need to feed the document tray or the paper P to the left and right, but simply change the timing at which the toner image on the photoreceptor drum 28 is transferred to the paper P. Alternatively, the copying position on the document tray 11[P may be changed by changing the stopping position of the document tray that falls on the contact glass 3.

In this way, it can be said that it is preferable to feed the paper P vertically than to feed it horizontally because the structure of the copying machine is simpler and the operation is easier. Therefore, the formation of a fold on the paper P in the paper folding section 45 is performed by folding the paper P that is being fed vertically.
Since the folds are formed in the paper P, the folds are formed in a direction perpendicular to the transport direction of the paper P.

[Effects of the Invention] As explained above, in the paper folding method in a copying machine equipped with a bookbinding function according to the present invention, the paper conveyance direction is perpendicular to the short side of the paper, and a Since the creases are formed in the direction perpendicular to the paper conveyance direction, the paper and original documents can be conveyed efficiently and then the creases can be formed on the paper, making it possible to efficiently perform saddle stitching using a copying machine. It has the excellent effect of

A schematic front view showing an embodiment of the copying machine, FIG. 2 is an enlarged view of the paper folding device (paper folding section) shown in FIG. 1, FIG. 3 is an enlarged view of the paper binding section shown in FIG. 1, and FIG. A plan view of the main parts in Figure 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.

DESCRIPTION OF SYMBOLS 1... Copying machine, 2... Casing, 3... Contact glass, 4... Recirculating original handling device, 6...
- Original tray, 25... Copying device, 26... Developing unit, 28... Photoconductor, 29... Paper cassette, 34...
...Fixing section, 35... Reversing section, 39... Intermediate tray, 44... Casing, 45... Paper folding section, 49
. . . Intermittent roller, 54 . . . Stopper, 56 . . . Non-binding tray, 57 . Guide plate, 6
5.66...Wall plate, 67...Width adjustment roller, 68...
・Tray, D...Document, P...Paper.

Figure 1 Figure 2

Claims (1)

[Claims] The conveyance direction of the paper is perpendicular to the cut edge of the paper,
A paper folding method for a copying machine equipped with a bookbinding function, characterized in that a crease is formed in the center of the paper in a direction perpendicular to the conveyance direction of the paper.