JPS60254165A - Copying machine equipped with book binding function - Google Patents

Abstract

PURPOSE:To bind books of elegant format efficiently by folding copied forms into two in the center, sheet by sheet, stitching them in a mountain shape with fold up in page order, and stitching forms in supporting by a support member. CONSTITUTION:Forms copied by a copying part which is not shorn in a figure are conveyed, sheet by sheet, by rollers 47 and 48, and passed between sponge rolls 51 and when they contact a stopper 54 positioned according to the size of the forms, a sectorial roller 49 begins to rotate as shown by an arrow. The rear end of each form is wound in between a rooler 47 and the sectional roller 49 and the form is folded into two; when the sectorial roller 49 makes one turn, the stopper 54 moves back and the form is sent by the rolls 51 and discharged from rollers 55. A tray 56 moves up when forms are bound, and the forms are stacked in trays 63 and 64 so that folds are stcked on the front end part 59 of the support member 59, and then stitched together by a stitcher 58. thus, books of elegant format are bound.

Description

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

[Prior art]

When copying, one page is copied on each of the left and right halves of the paper, and if necessary, this is done on the front and back sides of the paper, and then these papers are stacked in page order and the center part is bound to form a booklet. To obtain a copying machine that allows fold binding,
It is conceivable to fold a plurality of sheets of paper that has been copied into two at once and bind the folded sheets together.

However, when multiple sheets of paper are folded in half as described above, although there is an advantage that the folds are aligned, the creases are not firmly formed over all the sheets, and this tendency becomes stronger as the number of sheets increases.

[Purpose of the invention]

In view of the above points, the present invention is a bookbinding method in which sheets are folded in the center one by one after copying is completed, and the center-folded sheets are sequentially stacked in a mountain shape and bound while maintaining this state. The purpose is to provide a copying machine with functions.

[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 stretched horizontally is provided in the upper part of the casing 2 of the copy ii.
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 the document tray 6 is wound around a pair of pulleys 7.
A delivery belt 8 for sending out the originals one by one in the right direction starting from the lowest one is facing. This delivery belt 8
A pair of separation rollers 9, 9 for blocking the upper part of the double-sheet original ID are arranged on the right side of the holder, and a large-diameter roller for reversing the original ID is provided diagonally below the right side of this separation roller 9°9. rollers 10 are 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 communicating with the end of the inner passage 1 is formed in the vicinity of the separating roller 9°9.
3. A switching pawl member 18 for closing either one of the openings 3 and 17 is provided.

A large-diameter roller 19 is disposed on the left side of the contact glass 3, and a plurality of rollers 20 are arranged around the outer periphery of the roller 19 to convey the document on the contact glass 3 along the roller 19.゜21 is 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, the document tray 6
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.

In the casing 2 below the contact glass 3, a copying device @ 25 with a variable magnification function is disposed, and this copying device 25 has a developing section 26, which has the following functions:
It has a photoreceptor drum 28 that receives light from an optical system 27 that has exposed the original 1iD on the touch glass 3 to form an electrostatic latent image.

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 installed, and rollers 30 and 30 are disposed within the casing 2 for feeding out sheets of paper P one by one from each of the installed paper cassettes 29. Also, the paper P sent out from each paper cassette 29
are conveyed through passages 31a, and the passages 31a merge to form a passage 31b, which reaches the developing section 26. Conveying rollers 33, 33, . . . are arranged in this passage 31b. 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,
The toner image is fixed 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 placed in a separate casing 44 (not in the reversing section 35), and is placed in a sheet folding section 45 (to be described later). An intermediate tray 39 is disposed at the bottom of the casing 2, and is configured to temporarily store the paper P 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, rollers 43, 43, . The paper P that has been removed is transferred to the path 4 which joins the path 31b.
2 to the developing section 26 again.

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 the developing section 26 passes through the passages 31a and 31b.
The toner image on the photoreceptor 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 reversely rotated, and the
The paper P is introduced into the passage 40 from the rear end thereof and fed into the intermediate tray 39. 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 sheets P with single-sided copies have been stored in the intermediate tray 39, from now on, the sheets P in the intermediate tray 39 are sent out one by one and supplied to the developing section 26 again. The image is copied onto the back side of the paper P. Since this sharpening switching claw member 38 has been switched to the state shown in FIG.
The paper P in the double-sided copy flow 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, and as shown in detail in FIG. It has transport rollers 47, 48. Furthermore, an incomplete circumferential roller 49 located downstream of both rollers 47 and 48 can be joined to one of the conveying rollers 47. Downstream of these rollers 47, 48 is a passage 5.
0 is formed, and the base end of this passage 50 is connected to the roller 4.
7 and missing circumference 1] - The rollers 47 and 49 are inclined in the direction of the joint, so that the paper P is caught in the joint of both rollers 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 further 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 is provided in the passage 52 on the downstream side of the sensor 53, and is capable of taking a retracted position by rotating around the shaft 5'4a.
A pair of conveyance rollers 55, 55 are arranged at the tip of the passage 52. 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 51.51 serve to press down the paper so that only the vicinity of the center of the paper P is bent toward the joint between the rollers 47.49 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 is 51.51 on both days - La 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.

Note that the configuration of the paper folding section 45 is not limited to the above embodiment, and may be configured by other means.

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 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.

A paper binding section 57 is disposed within the gauging 44 below the non-binding tray 56.

The paper binding unit 57 includes a support member 59 disposed so as to straddle the paper P folded in the middle in the paper folding unit 45 with the fold facing -F, and a support member 59 disposed above the support member 59. and a binding device 58 such as a stapler.

The support member 59 has an upper edge 59A formed in an acute edge shape so as to support the folds of the paper P from below, and both sides of the upper edge 59A are sloped surfaces 59B.

59B, and supports the paper P in a mountain shape. Further, a portion of the upper edge 59A functions as a receiving seat for receiving a binding tool (wire or other needle-like member) during binding by the binding device 58.

A pair of flat guide plates 63 and 64 are arranged on both sides of the support member 59 and are rotatably supported by support shafts 61 and 62 near the upper edge thereof.
3.64 is movable between the solid line position and the chain line position in FIG.

A fixed wall plate 65 is erected on one side of one of the guide plates 64 as shown in FIG. A wall plate 66 is erected and is movable in a direction perpendicular to the direction. 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. Furthermore, the wall plate 65
A width-adjusting roller 67 is protrudingly provided on the outside of the guide plate 64 to 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. ing. The axis of the width adjusting roller 67 is arranged to intersect with the axis of the support shaft 62, and the width adjusting 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 θ1
．． By setting θ2 to an appropriate angle, the edged 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 81I57 described above will be described.

The paper P conveyed from the fixing section 34 to the paper binding section 57
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, 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 upon timing with the signal from the lζ sensor 53, and the bent paper p+:m is caught between the feed roller 47 and the roller 49, and the paper P is caught in the center of the paper P. Form a crease in the section. After that, the notched portion of the notched roller 49 faces the conveyance roller 47,
Since the stopper 54 is retracted from the passage 52 before reaching this state, the cutout portion of the cutout roller 49 is
7, when the conveying force is lost, the sponge roller 51.
Paper P with a crease formed in the center by the conveying force of 51
is supplied to the paper binding section 57 from the direction of the conveyance 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. Incidentally, the non-binding l-lay 56 is now 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 6.
3.64, the wall plate 66 is moved in the direction of the support shaft 62, and the paper P is moved so that the fold of the paper P straddles the upper edge 59A of the support member 59.

Then, both the guide plates 63 and 64 are rotated to the positions shown by the chain lines in FIG. 58 is lowered and the sheets P are bound along the folds of the sheets P.

Finally, turn one guide plate 63 to the solid line position! et!
At the same time, by retracting the wall plate 66, 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, in the present invention, after copying is completed, the transfer paper is
A support member that folds each sheet in the center and stacks the half-folded transfer paper in the order of the pages in a mountain shape with the fold facing upward; By incorporating a binding device that binds the folded edges of the paper group, the sheets are folded and stacked one by one after copying, so that the folds are neatly formed across all pages. Therefore, it is possible to perform saddle-stitch binding with firm folds, without resulting in an unsightly binding due to insufficient folding. In addition, since the binding can be performed using the binding device at the stack position of the folded sheets, there is no need to move the sheets to another location, and the bookbinding can be carried out efficiently.

[Brief explanation of the drawing]

FIG. 1 is a front view of the survey route showing an embodiment of the 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, and FIG. 5 is a front view showing the relationship between the paper binding section and the tray shown in FIGS. 3 and 4. be. FIG. 6 is an enlarged view of the main part 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... Developing unit, 28... Photoconductor, 29... Paper cassette, 34...
... Regular stone part, 35... Reversing part, 39... Intermediate tray, 44... Casing, 45... Paper folding part, 49
... Circumferential gap roller, 54... Stopper, 56... Unbound tray, 57... Paper binding section, 58... Binding tool, 59... Support member, 59... Receiving seat , 63.6
4...Guide plate, 65.66...Wall plate, 67...
Width adjustment roller, 68...Tray, D...Document, P...
・Paper. Applicant's agent Kiyoshi Inomata Figure 2 Figure 3

Claims (1)

[Claims] After copying, the sheets are folded one by one at the center, and the folded sheets are stacked in the order of the pages in a mountain shape with the folds facing upwards. A copying machine equipped with a bookbinding function including a binding device that binds the folded edges of a group of sheets supported by a member.