JPS6123164A - Copying machine - Google Patents

Abstract

PURPOSE:To eliminate the need to circulate an original and to reduce the probability of damage to be inflicted on the original by returning a form to which two right and left pages are already copied to an original handling device without folding it in the center, and using this form as an original for further copying. CONSTITUTION:When the 1st form is copied and discharged, a nonbinding tray 56 is placed at a chain-line position and the stopper of a form folding part 45 is rotated and set back. Then, the form P to which every page is copied is discharged from the machine temporarily and stacked, so the original D in an original tray 6 is replaced with the form, which is used as an original. For the purpose, the nonbinding tray 56 is moved back at a position shown by a solid line and the stopper 54 of the form folding part 45 is projected. Those switching operation set a discharge mode in which binding is not performed and a bookbinding mode when the discharged form P is supplied as the original to a recirculation type original handling device 4, and both are set selectively through the mode switching.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a copying machine capable of double-sided copying, and more particularly to a copying machine suitable for use in bookbinding.

[Prior art]

Copying 8 pages of a manuscript containing image information for 4 pages onto the corresponding page of a sheet of paper that should be saddle-stitched, and creating a book with the same page order when the sheets are saddle-stitched as shown in (l). In copying, since it is necessary to copy every X of a single sheet of original, this original is transported four times per sheet in order to copy all pages. As a result, the number of times the manuscript is circulated increases, and the probability of damaging the manuscript increases.'C:J
Become something.

[Purpose of the invention]

Therefore, the present invention eliminates the need for the number of subsequent circulations of the original by returning the paper on which duplication η'' has been completed on two left and right pages to the document handling device without folding it in the middle, and copying this as a manuscript onto a subsequent sheet of paper. This was done with the purpose of providing a copying machine that greatly reduced the probability of damage to manuscripts.

[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 at the upper part of a casing 2 of a copy*i. , a recirculating document handling device 4 is disposed 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 1-glass 3. An opening is formed in the lower surface of one end of the document tray 6. In this opening, a pair of pulleys 7 and 7 are wound, and the documents in the document tray 6 are loaded one by one from the lowest one. 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, and the rollers 11 and 12 convey the document along this roller 10.
An arcuate passage 13 is formed along the outer periphery of 0. From the lower end of the roller 10 to the contact glass 3
In the hole 1, a horizontal passage 14 is formed,
Also, contact.

A conveyor belt 16 wound around a pair of pulleys 15, 15 is in pressure contact with the glass 3. Further, an inclined reversing passage 17 is formed which communicates the passage 13 near the separating rollers 9 and the end of the contact glass 3. Both passages 13
．． A switching claw portion 418 for opening either one of the 17 is provided.

A roller 19 with a diameter larger than t is placed on the left side of the contact glass 3.
is arranged, and a plurality of [1-ra 20.degree.

Further, an arc-shaped passage 2 is provided along the outer periphery of this roller 19.
2 is formed, and a passage 23 for returning the original document to the original 1-Reiro communicates with the rear end of this passage 22.
At the rear end of the passage 23, there are a pair of rollers 24, 24 for discharging the originals in the passage 23 onto the original tray 6.
is installed.

In this new document handling device 4, the document tray 6
The original ID, which has been supplied onto the contact glass 3 and exposed on one side, is transferred to the passage 14 by switching the switching claw member 18 from the illustrated position as needed and running the conveyor belt 16 on the contact glass 3 in the opposite direction. Then, the back side of the original can be exposed continuously by moving the original through the passages 13 and 17 in this order, making one round around the roller 10, turning it over, and then stopping it on the contact glass 3 again.

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 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.
8 (X)

Various charges (?,
A developing section 26A, a transfer section 26B1, a cleaning device, and the like are provided, but their configurations (as they are similar to those of a general copying machine) will not be described here.

A plurality of paper cassettes 29 are provided on the end surface of the casing 2.
．． 29... are installed in the casing 2, and rollers 30, 30... are arranged in the casing 2 for feeding out 61 sheets of paper I'Ij from each paper cassette 29 installed. has been done. Further, the paper P sent out from each paper cassette 29 is conveyed through a respective passage 31a, and each passage 3'1a merges into the passage 3.
1b, and is arranged to reach the ffji input section 26B. This) m path 31b has a conveyance roller 33.
, 33... have been fixed six times. One end of the general conveyance belt 32 faces near the transfer section 26B, and the toner image on the photosensitive drum 28 is transferred at this transfer section 26B, and the paper P is conveyed. There is.

A fixing section 34 is disposed at the other end of the conveyor belt 32, and fixes the toner image on the FfJ paper P.

On the downstream side of the fixing section 34, there is provided an anti-adhesive section 35 having a passage 36 that is curved upward, and six conveyance rollers 37 and 37 are disposed in this passage 36. The reversing section 35 is configured to reverse the sheet P by feeding the sheet P introduced from the leading end from the rear end.In addition, a switching claw member 38 is provided near the reversing section 35. The paper P from the fixing unit 34 is transferred to the reversing unit 35.
Alternatively, the paper is supplied to a paper folding section 45, which will be described later, provided in another casing/1.4. An intermediate tray 39 is arranged at the bottom of the casing 2,
5. Temporarily store the paper P introduced into the reversing section 35 and reversed. It has become. Inversion part 3
A passage 40 provided with a conveyance roller 41 is provided between the intermediate tray 39 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 4 for feeding out the sheets P in the intermediate tray 39 one by one starting from the uppermost one.
3.43... are arranged, and the paper P sent out from the intermediate tray 39 is passed through a passage 42 that joins the above-mentioned Konoro 31b.
The image is supplied again to the transfer section 26B via the transfer section 26B.

The paper folding unit 45 is for forming a crease in advance in the center of the paper P that covers the saddle stitching,
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 and 48. Ma I
Here, one conveyance roller 47 has both rollers 47. The incomplete circumferential rollers 49 located downstream of '48 are joined together. A passage 50 is formed on the downstream side of these rollers/17.48, and the base end of this passage 50 is inclined forward toward the joint of the rollers 47 and 47 and the grooved circumferential roller 49. The paper P is caught in the joint between 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 5i and 51. Also, paper P is provided on the side of the passage 52.
A sensor 53 is provided to detect the presence or absence of paper P. When this sensor 53 detects the paper P, the incomplete circumferential roller 4
9 rotates once in the direction of the arrow. In the passage 52 on the downstream side of the sensor 53, there is faced a stool 54 which can rotate around a shaft 54a to take a retracted position, and at the tip of the passage 52 there is a pair of conveyance rollers. 55
．． 55 are arranged. The stopper 54 stops the paper P
A plurality of them may be provided depending on the size of the paper P being used, or they may be moved depending on the size of the paper P being used.

The sponge rollers 51, 51 function 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, 49 when the leading edge of the paper P is in contact with the stopper 54. , the conveyance force weakens,
Shikamo sponge roller 51. The circumferential speed of 51 is -ra 47,
It is desirable that the circumferential speed be a little faster than the circumferential speed of 48. Further, a plurality of strips 51, 5'1 may be provided in pairs depending on the size of the paper P.

Inside the casing 44 on the downstream side of the conveyor O-ra 55.55, there is a shaft 56 extending between the solid line 1 and the chain line 1 in FIG.
A non-binding L-lay 56 that can rotate around a is provided, and this 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. Also, when the sheets P to be bound are transported from the sheet folding section 45, they are raised to the solid line position and retracted.

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

The paper binding section 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. The receiver 60 is located at the upper end of the seat 59 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. It is formed into a sharp edge shape. Ma I
The above-mentioned bearings have support shafts 61' and 624 on both sides of the seat 5'9, respectively, near the surface 60 of the five bearings.
A pair of flat guide plates 63.
64, and each guide plate 63.degree. 64 is movable between the solid line position and the chain line position in FIG.

On one side of one of the guide plates 64 is a wall plate 65 that can be moved in the direction of the arrow depending on the paper size, as shown in FIG.
is erected, and a wall plate 66 movable in a direction orthogonal to the axial direction of the support shaft 61 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 is a width adjustment device that rolls in pressure contact with the paper P on the guide plate 64 and brings the two adjacent sides of the paper P into contact with both the wall plates 65 and 66. Coro 6
7 is provided protrudingly.

The axis of the odd-width zero rollers 67 is arranged to intersect with the axis of the support shaft 62, and the width offset rollers 67
7 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.

Both sides 69 and 70 of A 68 face the lower surface of the casing 44 at acute angles e and o2. and,
By setting these angles θ1 and 02 to appropriate angles, the edge-lined paper that has slipped off the guide plate 64)
1 are aligned along one side 69 of the tray 68, and the saddle-stitched sheets P2 are aligned along the other side 70 of the tray 68.

Double-sided copying by the above-mentioned copying unit @2, and a bookbinding unit @4 consisting of the above-mentioned paper folding section 45 and paper binding section 57.
Saddle stitching of sheets P according to No. 6 will be explained.

The switching claw member 38 is raised so that the paper P from the fixing section 3/I is introduced into the reversing section 35, and an operation button (not shown) is pressed. J, the contact is the original I on the last 3
The light from the optical system 27 that scans the photosensitive drum 2
An electrostatic latent image is formed on the regular image portion 26.
The image is visualized by the toner from A. On the other hand, the paper P from the selected paper cassette 29 is supplied to the transfer section 26B through the paths 31a and 31b, and the toner image on the photoreceptor drum 28 is transferred to the paper P. After the toner image is fixed in the fixing section 34, the toner image is fixed in the reversing section 35.
is introduced into the passageway 36 of. When the rear end of the paper P is completely introduced into the passage 36, the transport rollers 37, 3
7 is reversed, the paper P is fed into the passage 40 from the rear end thereof, and the paper P is fed into the intermediate tray 39. The paper P stored in this inner 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 will be sent out one by one and supplied to the transfer section 26'B again. The image is copied onto the back side of the paper P. At this time, since the switching claw member 38 has been switched to one state shown in FIG. 1, 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.

When the first sheet is to be ejected after copying is completed, the non-binding tray 56 is switched to the position shown by the chain line, and the slots 1 to 54 of the sheet folding section 45 are rotated and removed. As a result, the paper P that has been copied to each negative section is once ejected outside the machine and used, so that it is replaced with the original paper in the original tray 6 and this paper P is used as the original.

At this time, this is achieved by retracting the non-binding 1 to 56 to the position shown by the solid line and causing the slots 1 to flange 54 of the paper folding section 45 to protrude to the state shown in the drawing. , These switches are a discharge mode in which the paper P is not subjected to center folding or binding processing, and
This IAU paper 1-) is supplied as one manuscript to the recirculation type document handling device 4, and the bookbinding mode in this case is set. J: QXo By restarting the copying in this way, the entire surface (2 pages) of the T paper P is now copied at the same time, and the paper is transferred from the fixing unit 34 to the paper folding unit 45.
The leading edge of the paper [) that is sent to 1112 is transported by the transport roller 47.
, 48 and sponge openings 51, 51, and comes into contact with a stopper 54, which is arranged in advance to fit the → rice of this 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 sheet 1 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 moment, the incomplete circumferential portion 549 rotates once in response to the signal from the sensor 53 that has detected the paper P, catches the bent paper P between the conveyance roller 47 and the roller 49, and transfers it to the center of the paper P. Form a crease. 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 that the notch part of the notch roller 49 faces 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 and 51 moves to the conveying roller 55.
, 55 directions to the paper binding section 57.

When paper P with a crease formed in the center is supplied, both guide plates 63.6/l of the paper binding section 57 (J shown in solid line in FIG. It is tilted downward and in the same plane (Q) so as to cover it.

In this case, the ray 56 is located at the solid line position in FIG. 3.

In this state J3, the sheets P supplied to both guide sheets 63 and 64-L are moved one by one so as to come into contact with both wall plates 65 and 66 by the action of width adjustment=1067. In this way, when the sheets P constituting one 1111 book are piled up on both guide plates 63 and 64 with their positions regulated,
The wall plate 66 is moved in the direction of the support shaft 62 to move the paper 1 so that the fold of the paper P is positioned on the edge of the receiving seat 59. Then, rotate both the guide plates 63 and 64 to the chain line (;liii) in Figure 3 to receive the paper P (
9. 60-(-The fold of the paper P is received on the surface 6.
0 edges, and the binding tool 58 is lowered to bind the sheets P along the folds of the sheets P. Finally, one of the guide plates 63 is turned 1IIIl to the solid line position, and the wall plate 66 is retracted, so that the saddle-stitched sheets [) slide down along the guide plate 64 and the tray 6
8.

〔Effect of the invention〕

As described above, the present invention includes a paper folding section that copies the image information of the document onto the portions constituting each page on the right side when the paper is spread, folds the copied paper in half, and saddle-stitches the paper; and a paper binding part that stacks the required number of sheets of paper folded in half by this folding part and binds them at the folds, copies the image information of each negative part, and copies the 1c paper to the paper folding part and the paper binding part. By providing a mode in which the paper is ejected without activating the paper, and a mode in which the ejected paper is used as a document, the number of times the document is circulated is reduced, the risk of damage to the document is reduced, and the second sheet is Thereafter, the two left and right pages of the paper are copied at the same time, which has excellent effects such as reducing the time required for copying and increasing the bookbinding speed.

[Brief explanation of drawings]

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 binding section in FIG. 1, and FIG. 3 is an enlarged view of the paper binding section in FIG. 1. , 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, J, and 4. 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...
・Photoconductor, 29...paper cassette, 34...constant r2
Part, 335... Reversing part, 39... Intermediate tray, 44
···casing. 45... Paper folding section, 49... Intermittent roller, 54...
...stopper, 56...no binding 1~lay, b7...
Paper binding part, 58...Binding tool, 59...Outside receiving, 6
3.6.4...Guide plate, 65.66...Wall plate. 67... Width adjustment roller, 68... Tray, D... Document, P... Paper.

Claims (1)

[Claims] A paper folding unit that copies the image information of the original onto the parts that make up each left and right page when the paper is spread, folds the copied paper in half, and saddle-stitches the paper, and the required number of sheets that are folded in half by this paper folding unit. It has a paper binding unit that stacks sheets of paper and binds them together at their folds, and there is a mode in which the paper with image information of each page portion is ejected without operating the paper folding unit and the paper binding unit, and a A copying machine characterized by having a mode in which paper is used as a manuscript.