JPH06127801A - Transfer device for long paper - Google Patents

Abstract

PURPOSE:To perform the cutting, winding and discharge of long paper smoothly with efficiency. CONSTITUTION:In the transfer device for long paper, a driving motor 107 operable in both normal and reverse directions is prepared in common for a carrier roller 81 for transferring long paper 2 and a winding part in which a storage space part is formed to wind the long paper 2 from the carrier roller 81 by guides 851, 852 and the guide 851 can move to open a part of the storage space part. Driving force is imparted to the carrier roller 81 by the clockwise operation of the driving motor 107. The transfer device is also provided with transmission mechanism having a one-way clutch 104 for imparting driving force to move the guide 851, movable by the counterclockwise operation of the driving motor 107, into the position of opening a part of the storage space part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to an image forming apparatus or the like for forming an image on a long sheet such as roll paper and then cutting the sheet into a predetermined size by a cutter and discharging the sheet. It relates to the device.

[0002]

2. Description of the Related Art For example, in an image forming apparatus such as an electrostatic plotter, an ink jet printer or a laser printer, after forming an image on a roll paper, a cutter in a direction perpendicular to a paper conveying direction (hereinafter referred to as a Y cutter). The sheet is cut using a cutter (hereinafter, referred to as an X cutter) parallel to the sheet conveyance direction or the sheet conveyance direction, and for example, from A4 size to A0 or A
It is known to eject paper of various sizes such as 0 width and 10 m in length.

By the way, in a color-compatible image forming apparatus, a mark for image formation is formed outside the effective image range on the side of the roll paper, and a plurality of colors are superposed in accordance with this mark to form a color image. I am trying.

In such an image forming apparatus, generally, when image data is received from a host computer and an image corresponding to the image data is laid out and formed on roll paper, a plurality of images are thereafter arranged within the width of the paper. By selectively contacting the X cutter with the paper, the paper is cut into various sizes and discharged.

In this case, in the case where the roll paper has a margin for forming a mark on the side, the X cutter is selectively brought into contact with the paper to cut the margin or the mark. I am trying.

Further, in a function which is usually called an automatic layout function and has a function of rearranging data sent from the computer for each image size, this function is used to perform layout on roll paper for each image size. ing. Therefore, the width of the roll paper may not be filled with the image in some cases, and in this case, the corresponding portion may be unavoidably discharged as a blank paper as a blank paper.

Therefore, in such an apparatus, for example, A4, A3, A2, A1, A0 size paper on which an image is formed and a long size paper of 10 m in length are started, as well as a margin part on the side of the roll paper. Sheets cut into various shapes, such as a blank sheet portion on which an image is not formed by the image forming unit, are discharged from the discharge port.

On the other hand, in an apparatus such as an electrostatic plotter in which the image forming portion is located between the roll paper and the transport roller, image formation can be performed only when tension is applied to the recording paper by the roll paper and the transport roller. There are some that are not. In such an apparatus, the leading edge of the sheet cannot be returned to the upstream side of the nip portion of the transport roller, so that the sheet from the latent image forming section to the leading edge of the sheet is wasted. Then, every time the image forming operation is performed, this portion is cut as waste paper by the Y cutter and discharged from the discharge port.

As described above, in each of the conventional apparatuses, the sheet is discharged from the sheet discharge port in various states. However, all kinds of discharged sheets are discharged from the discharge port outside the apparatus. It was dropped and stored in the stocker located at the bottom. Then, the operator selects and takes out only the required recording paper from the stocker at the end of the paper discharge,
Other wasted paper such as margins and marks is left as it is and is treated as dust at a certain point.

[0010]

Conventionally, from the paper discharge port A
4, A3, A2, A1, A0 size recording paper and length 10
Along with the long-sized recording paper of m, waste papers of various sizes such as a blank portion on the side of the roll paper and a blank portion of the image forming portion in the width direction which is not imaged are discharged, and all of them are the same. When storing in a stocker, it is necessary for the operator to select the desired paper from the stocker and take it out.In this case, especially small size paper should be slipped into other blank paper or waste paper. There is a problem, and finding and extracting it can be extremely troublesome.
Further, when a long paper is ejected later, the weight of the long paper often causes the previously output paper to be crushed and bent. Furthermore, for example, A0
Since a long paper of size or length of 10 m is randomly stored in the stocker where waste paper is stored, it may buckle and bend during the fall, and if you try to remove it from the stocker in this state There was also a chance to beat.

As described above, conventionally, various sizes of paper and waste paper that is not actually needed are mixedly ejected, and the materials of the paper may vary, so that the required paper and the waste paper are used. Select unnecessary paper such as
Further, it is necessary to consider the paper size, material, etc., and there is a problem that the paper cannot be discharged efficiently.

Therefore, there has been a strong demand for the appearance of an apparatus having a structure capable of separating dust from the required output and discharging it according to the material. However, an apparatus which meets such a demand is one in which each step of carrying, cutting, winding, and ejecting a long sheet is individually performed by different driving sources, and the driving means is complicated. It will be a big one,
Moreover, since each process is individually operated, the whole operation cannot be efficiently and smoothly performed.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a long paper transporting device capable of efficiently and smoothly carrying, cutting, winding, and discharging a long paper. To aim.

[0014]

The present invention has a conveying means for conveying a long sheet and a storage space formed by a plurality of sheet guide members for winding the long sheet conveyed by the conveying means. At the same time, a take-up storage unit in which at least one paper guide member is movable so that a part of the storage space can be opened, a drive source capable of forward and reverse operation, and the conveyance by forward drive of the drive source. Give driving force to the means,
The driving means has a transmission mechanism that gives a driving force to move the movable paper guide member to a position where a part of the storage space is opened by operating the drive source in the negative direction.

Further, in the present invention, the drive source is a pulse motor, and a part of the accommodating space portion by the movable paper guide member is rotated by the negative direction rotation of the pulse motor corresponding to the number of pulses corresponding to the movement amount. Is configured to determine the amount of movement in the opening direction.

Further, according to the present invention, a conveying means for conveying the long paper, a cutting means for cutting the long paper conveyed by the conveying means into a predetermined size as required, and the cutting means. Rewinding having a storage space portion formed by a plurality of paper guide members for winding a long sheet conveyed by the above-mentioned method and at least one paper guide member being movable so that a part of the storage space portion can be opened. A storage part, a drive source capable of forward and reverse operation, a drive force is applied to the conveying means and the cutting means by the forward direction operation of the drive source, and a drive force is applied to the cutting means by the negative direction operation of the drive source. The drive means is provided with a transmission mechanism that prevents the movable paper guide member and moves the movable paper guide member to a position where a part of the storage space is opened.

[0017]

As a result, according to the present invention, the cutting means for cutting the long sheet while conveying the sheet and the conveying means for conveying the sheet to the winding and storing section have the same drive source, and the long sheet to be conveyed. As a winding and storing section for winding the sheet, there is a storage space section formed of a plurality of sheet guide members, and at least one sheet guide member is movable so that a part of the storage space section can be opened. The drive source is also used to drive the movable sheet guide member of the winding and storing section. Then, when the drive source is operated in the forward direction, a driving force for conveying and cutting the long paper by the conveying means and the cutting means is given,
Further, in the case of the operation in the negative direction, the driving force to the conveying means and the cutting means is blocked, and the driving force to move the movable sheet guide member to the position for opening a part of the storage space is applied. The transmission mechanism will be activated. With this, since it is possible to perform the driving of conveying and cutting the long-sized paper and the driving of opening a part of the storage space portion in the winding storage portion by one drive source, the configuration of the drive means can be simplified and Transporting and cutting long paper by the operation of the transmission mechanism
It is possible to efficiently and smoothly perform winding up to discharge of the rolled long paper.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In this case, this embodiment shows an example in which the present invention is applied to an electrostatic plotter. FIG. 1 shows a schematic configuration of a paper transport unit. In the drawing, the roll paper denoted by reference numeral 1 is, for example, a paper 2 having a width of 914 mm and a length of 150 m.

The paper 2 that is rewound from the roll paper 1 is always conveyed by applying back tension to the roll paper 1 side with the conveyance roller 3. Further, an electrostatic recording head 4 that forms a latent image on the paper 2 positioned between the roll paper 1 and the transport roller 3 by using the paper 2 as an electrostatic recording paper, and the latent image in black, cyan, and A developing unit 5 for developing with a color liquid developer such as magenta or yellow is arranged.

Then, while rewinding and winding the paper 2 of the roll paper 1, the electrostatic recording head 4 forms an electrostatic latent image and the developing unit 5 develops the latent image. In the developing unit 5, 4 of cyan, magenta, yellow and black are used.
The colors work independently, the paper 2 is reciprocated 4 times, and the latent image formation and the development operation are repeated for each color, and the color is changed by 4 colors.
I try to form an image.

In this case, the paper 2 is rewound and wound around the roll paper 1 by the conveying roller 3 every time one color development is completed at the time of color image formation, and the leading end of the paper 2 is intermediately wound at the time of halfway development. It is wound around the take-up roller 6, and at the time of final color development, the leading end of the paper 2 is switched by the path switching means.
The cutter unit 7 is conveyed.

Then, the sheet 2 that has passed through the cutter unit 7
Is sent to the paper discharge device 8. This paper discharge device 8
Depending on the state, the sheet discharge as it is or the sheet discharge after winding is selectively executed. Reference numeral 9 is a stocker for storing the paper discharged from the paper discharge device 8.

FIG. 2 shows a schematic structure of the cutter unit 7. In this case, the cutter unit 7 determines the length of the sheet 2 in the conveying direction, determines the Y-cutter 71 that cuts the sheet 2 in a direction perpendicular to the conveying direction, and determines the width direction of the sheet 2 in the conveying direction. Paper 2 in the parallel direction
Each of which has a plurality of X cutters 72 for cutting the sheet, and further includes a first conveyance roller 73 and a second conveyance roller 73 which are conveyance roller pairs for conveying the sheet 2 to the Y cutter 71 and the X cutter 72 in the cutter unit 7. It has a transport roller 74.

Here, the X cutter 72 has a central portion of 4 with a margin of 37 mm left and right with respect to the paper 2 having a width of 914 mm.
Five pieces in total are arranged along the width direction of the sheet 2 so as to be equally divided. Each X cutter 72 can be selectively brought into contact with or separated from the paper 2 by a moving mechanism (not shown), and the combination of the cuts by the X cutters 72 allows the paper 2 to be aligned with the image position A4, A3, A.
It is designed to be cut into 2, A1, and A0 sizes. .

The Y-cutter 71 normally stands by outside the sheet 2 in the width direction, and temporarily suspends the first and second conveying rollers 73 and 74 at the time of cutting so that the Y-cutter 71 is moved to the sheet 2. By crossing in the width direction, it is cut into a predetermined length. As a result, depending on the image size, it is possible to obtain a long sheet having a width of the sheet 2 of A0 or 914 mm and a length of 10 m. FIG. 3 (FIG. 4) shows a schematic configuration of a paper path between the cutter unit 7 and the paper discharge device 8 provided downstream of the cutter unit 7.

In this case, as a sheet path behind the second conveying roller 74 of the cutter unit 7, a narrow first conveying path formed by the first guide 91 and the second guide 92, a second guide 92 and a third guide. It has a wide second transport path formed by 93. In this case, the first transport path is on a substantially extended line of the cutter transport path, and the second transport path is at a position branched downward from the second transport path.

Then, at this branch point, an obstacle protrusion 94 protruding from the first guide 91 so as to shield the first conveyance path.
Is provided. Further, a gate 95 is provided on the third guide 93 side so as to face the obstacle protrusion 94, and the gate 95 can be swung by a solenoid 96.

In this case, the obstacle projection 94 is made of a flexible film, and the solenoid 96 attracts the gate 95 to lift the gate 95 upward so as to shield the second conveying path as shown in FIG. There is. Here, the gate 95 is
As shown in FIG. 2, six positions are arranged corresponding to the width position of the sheet 2 cut by the X cutter 72, and are independently provided by solenoids 96 provided for the respective gates 95 around the common axis. It is possible to swing.

Therefore, when the gate 95 faces downward as shown in FIG. 3, the leading edge of the sheet 2 conveyed from the cutter unit 7 is directed downward by the obstacle protrusion 94, and the leading edge of the sheet 2 is first. Instead of entering the transport path, it slides on the third guide 93 by its own weight through the second transport path, is transported to the outside of the apparatus, and is dropped and stored in the paper stocker.
When the gate 95 faces upward as shown in FIG. 3, the leading edge of the sheet 2 conveyed from the cutter unit 7 passes between the obstacle projection 94 bent by the gate 95 and the gate 95, and the first conveyance path. It is supposed to be guided to. Next, FIG. 5 (FIG. 6) shows a schematic configuration of the paper discharge device 8.

In this case, the above-mentioned first transport path communicates with the nip point between the third transport roller 81 and the pinch member 82. In addition to the pinch member 82, a paper discharge pinch roller 83 is arranged around the third transport roller 81. Further, a comb-teeth-shaped tip portion 911 of the first guide 91 is inserted between the third conveying roller 81 and the pinch member 82.

As shown in FIG. 2, the third conveying roller 81 is, for example, one in which a plurality of foamed rubber rollers are press-fitted and adhered to a metal shaft at a predetermined interval, and the roller is damaged by the cut paper edge. In order to prevent the generation of shavings, the paper 2 is at least cut by the X cutter 72 described above.
The part without the roller is made to correspond to the position where is cut. In this case, the diameter of the foamed rubber material may be set smaller than that of other outer circumferences. Further, the pinch member 82 is arranged corresponding to the position of the foamed rubber material roller forming the third conveying roller 81, and as shown in FIG. 6, the bracket 8 held swingably by the rotation center 821.
It is composed of a plastic roller rotatably supported at the tip of 22. In this case, the pinch member 82 made of a plastic roller is in pressure contact with the third conveying roller 81 by a biasing means (not shown), and the pressure contact force is set so small as not to affect the conveying force in the cutter unit 7. Has been done. Further, a part of the bracket 822 extends to the downstream side of the sheet on the opposite side of the pinch member 82 from the third transport roller 82, and a flexible film 822a serving as a sheet transport guide is provided at this part. is doing.

The paper discharge pinch roller 83 is located on the downstream side in the paper carrying direction together with the third carrying roller 81, and the paper 2 carried by the nip between the pinch member 82 and the third carrying roller 81 is guided through the guide 84. I take it into the nip part.

As shown in FIG. 6, the guide 84 is formed by joining the ends of two substantially arcuate plate members 841 and 842, and a swing shaft 843 provided on one plate member 841 side. A solenoid (not shown) can swing about. Also, the joint portion 844 of the guide 84
Has a comb-tooth shape, and this portion is the third conveyance roller 8
There is a positional relationship in which the foam rubber material No. 1 enters between the rollers. In this case, the comb-teeth shape of the joining portion 844 is located at the vicinity of the first guide 91, at least at the paper edge position cut by the X cutter 72 being a projection.

5 and 6 show that the guide 84 assumes two positions by the action of the solenoid.
When the guide 84 takes the position shown in FIG. 5,
The sheet 2 conveyed by the pinch member 82 by the plate member 842 is guided to the sheet discharge pinch roller 83 side, and is fixed so as to close the hole provided in the apparatus upper surface cover 98 as shown in FIG. 3 (FIG. 4). The paper is discharged along the discharged paper tray 97. In this case, the paper discharge tray 97 is formed with a gentle slope upward to guide the paper 2 discharged from the third conveying roller 81 onto the apparatus upper surface cover 98. Further, a flexible member 99 that restricts the paper discharge path is provided on the apparatus upper surface cover 98 so as to face the paper discharge tray 97. The flexible member 99 is for preventing the rear end of the sheet 2 from bulging and riding on the third conveying roller 81 to deteriorate the storability.

Now, in the case where the guide 84 is located at the position shown in FIG. 5, the process until the small size sheet 2 is discharged onto the apparatus upper cover 98 will be briefly described with reference to FIGS. 3, 4 and 7. .

In this case, the image forming operation is started and the paper 2
The leading edge is conveyed through the cutter unit 7, but the paper 2
Since there is waste paper at the tip, initially all gates 95 descend downward as shown in FIG. As a result, the leading end of the sheet 2 is pressed downward by the obstacle protrusion 94 and guided to the second transport path. Further, the waste paper 2a shown in FIG. 7 whose rear end is cut by the Y cutter 71 slides down on the third guide 93.

Next, when the paper 2 is a small size paper,
The guide 84 takes the position shown in FIG. 5 by a solenoid (not shown), and at the timing when the leading edge of the sheet comes out of the cutter unit 7, only the gate 95 corresponding to the sheet portion 2d shown in FIG. It moves upward as shown in FIG. 4 and guides it to the first transport path.

Further, in the width direction of the sheet 2 shown in FIG. 7, the gate 95 corresponding to the portion 2c where the image is not recorded is
While it is descending downward as shown in FIG. 3, it is guided to the second conveyance path and slid down on the third guide 93. Further, a mark is recorded on the side portion of the paper 2, or as a margin, the X cutter 7
In the case of being cut at 2, the gate 95 corresponding to the blank portion 2b shown in FIG. 7 is slid down on the third guide 93 while the gate 95 corresponding to the blank portion 2b shown in FIG. The sheet portion 2d on which an image is actually formed, which is guided to the first transport path by the rise of the gate 94 shown in FIG. 4, is transported by the third transport roller 81 and the pinch member 82, and is guided by the guide 8.
The sheet is guided along the fourth plate member 842 and is ejected onto the sheet ejection tray 97 by the sheet ejection pinch roller 83.

In this manner, by selectively moving the plurality of gates 95 provided in the width direction of the sheet 2, the necessary image portion on the sheet 2 and the unnecessary dust portion are separated. Can be discharged to different storage parts. Meanwhile, the guide 84
When the position shown in FIG. 6 is taken, the sheet 2 conveyed by the pinch member 82 by the plate member 841 is discharged to the winding section 85.

In this case, when the guide 84 is at the position shown in FIG. 6, the leading end of the sheet 2 is nipped and conveyed by the pinch member 82 and the third conveying roller 81, and along the plate member 841 of the guide 84. And is conveyed to the winding section 85.

As shown in FIG. 5 (FIG. 6), the winding portion 85 has three guides 84, 8 each having an arc shape.
51 and 852 form a substantially cylindrical space. These three guides 84, 851, 852 are formed by sticking a resin sheet having a low coefficient of friction along a paper transport direction on a partial surface of a base material. As the kind of resin, polyacetal, fluorine resin and the like are preferable. Then, the sheet 2 is wound along the guides 84, 851, 852 having the resin sheet surface.

As described above, the guide 84 forms a conveyance path leading to the third conveyance roller 81 and the paper discharge tray 97, and a part thereof, here, the plate member 841 is the paper storage of the winding section 84. It has the role of a guide that forms a space, and also plays the role of a switching gate that switches the paper path. Further, the sheet 2 can be discharged to a different path without providing a new conveyance guide, which has an effect of making the sheet path shortest.

On the other hand, the guide 852 is swingably provided about the shaft 852a and is biased by the spring 86 in the clockwise direction in FIG. And this guide 8
The left and right positions on the outer side in the paper width direction of 52 are bent at a right angle to the space side of the winding section 85, and a rotatable roller 852b is provided inside the facing bending section. Further, the guide 851 has a bent portion 851a at a position corresponding to the roller 852b, and the guide 851 has a third transport roller 8
1 is swingably held by a bearing portion held by a side plate (FIG. 2).

Further, as shown in FIG. 2, the guide 851 is provided with a plurality of holes 851b over the range of the sheet width, and the assist rollers 87 are rotatably provided in the holes 851b, respectively. A part of the outer circumference of 87 is projected from each hole 851b into the paper winding space of the winding unit 8. Similar to the third transport roller 81, the assist roller 87 here is configured by press-fitting a plurality of foam rubber rollers onto a metal shaft.

Further, the guide 851 is the assist roller 8
7, a flexible film 88 is provided toward the downstream side in the paper transport direction, and the tip of the flexible film 88 is guided by the guide 8.
4 is located near the surface of the plate member 841.

Such a guide 851 is swingably held coaxially with the above-mentioned third conveying roller 81, and torsion coil springs 89 are provided symmetrically at both ends of the shaft of the third conveying roller 81. One end of the torsion coil spring 89 is fixed to the guide 851 as shown in FIG. 6, and the other end is in contact with the first guide 91.
The urging force of 9 causes the guide 851 to move to the assist roller 87.
6 is urged clockwise in FIG. 6, and the swing range is restricted by a stopper (not shown).

As a result, the bent portion 851 of the guide 851 is
The a is always in contact with the roller 852b of the guide 852. In this case, if the biasing force of the torsion coil spring 89 is made stronger than the biasing force of the spring 86 on the guide 852 side, the guide 852 is positioned by the guide 851. That is, when the guide 851 is in contact with the regulating means and is lifted to the uppermost portion, the diameter of the inscribed circle by the guide 84, the guide 851, and the guide 852 is, for example, about 40 m.
A paper winding space of the winding portion 8 having a substantially cylindrical shape of m is formed. The torsion coil spring 89 at this time is
The guide 851 is provided with a moment that is slightly larger than the moment of its own weight including the guide 851 and the assist roller 87 and the moment of rotation of the guide 852.

The flexible film 88 provided on the guide 851 is in contact with the flexible film 882a attached to the bracket 822 of the pinch member 82,
The sheet conveyed by the third conveying roller 81 and the pinch member 82 is guided to the winding section 85 by the surface of the plate member 841 of the guide 84 and the flexible film 822a.
In this case, the contact pressure between the flexible film 822a and the surface of the plate member 841 is small, and the thickness of the flexible film 822a is set so as not to hinder the progress of the sheet 2. FIG. 2 shows a drive mechanism for each unit.

In this case, the third conveyor roller gear 101 is fixed to both ends of the shaft of the third conveyor roller 81 outside the supporting side plate (not shown). Further, the assist roller gear 102 is fixed to both ends of the assist roller 87 outside the guide 851.

On the other hand, the guide 851 is fixed with the fourth idler gear 103 and studs supporting the fourth idler gear 103 on both sides thereof, and the one-way clutch 104 is press-fitted into the inner diameter of the fourth idler gear 103. One-way clutch 10
The direction of press-fitting 4 is set so that the stud supporting the fourth idler gear 103 can rotate only in one direction.

The fourth idler gear 103 has a guide 851.
On both sides of the third conveyance roller gear 101 and the assist roller gear 102 are engaged with each other.
The drive is transmitted to the assist roller 87 only when the sheet rotates in the sheet conveying direction. Cutter unit 7
A cutter drive gear 105 is fitted to the shaft via a one-way clutch 106 at one shaft end of the second conveying roller 72 inside.

A driving motor 107 is provided on a side plate (not shown), and the driving force of the driving motor 107 is driven by a motor gear 108 fixed to the output shaft of the driving motor 107 and a first idler gear 109 also fixed to the side plate. Gear 1
I am trying to tell 05. In this case, due to the action of the one-way clutch 106, only when the drive motor 107 rotates in the direction in which the sheet is conveyed (counterclockwise in FIG. 2),
The driving force is transmitted to the second transport roller 74.

The driving force of the second transport roller 74 drives the first transport roller 73 via a clutch mechanism (not shown). As a result, the driving force of the drive motor 107 drives the first transport roller 73 and the second transport roller 74, and only the second transport roller 74 is driven by the clutch mechanism.

On the side plate (not shown), the motor gear 1
A second idler gear 110 that meshes with 08, a third idler gear 111 that meshes with the second idler gear 110, and a stud that holds these gears are arranged.

The third idler gear 111 meshes with one of the third conveyor roller gears 101 fixed to the third conveyor roller 81 to transmit the driving force of the drive motor 107 to the third conveyor roller 81. As a result, the third transport roller 81 and the assist roller 87 can be driven by the driving force of the drive motor 107.

A pulse motor is used as the drive motor 107 to enable forward / reverse rotation control. When the drive motor 107 is rotated in the forward direction (counterclockwise in FIG. 2), the driving force thereof is the first conveyance roller 73, the second conveyance roller 74,
The sheet 2 is fed by the third transport roller 81 and the assist roller 87.
The drive motor 10
When 7 rotates in the reverse direction, the driving force is not transmitted to the second conveying roller 74 of the cutter unit 7 by the action of the one-way clutch 106.

The third conveying roller 81 rotates in the direction for returning the sheet 2 to the image forming side, but the left and right fourth idler gears 1
No. 03 cannot rotate with respect to the stud, which is the center axis of rotation, due to the action of the one-way clutch 104.

Therefore, since the driving force is not transmitted to the assist roller gear 102 and the fourth idler gear 103 does not rotate, the entire guide 851 is rotated by the shaft of the third conveyor roller 81 as the third conveyor roller gear 101 rotates. It rotates counterclockwise around the center against the biasing force of the torsion coil spring 89. In this case, the swing range of the guide 851 is set to, for example, about 40 degrees by a regulation member (not shown).
Therefore, the reverse rotation range of the drive motor 107 is set to the number of pulses corresponding to the movement amount of 40 degrees.

Returning to FIG. 6, the guide 852 has a spring 86.
Is abutted against the guide 851 and positioned. Then, as the guide 851 rotates counterclockwise, the guide 852 moves downward via the roller 852b and rotates clockwise. As a result, the position of each rotation center is set so that the space of the winding portion 8 maintains a substantially cylindrical shape even if these two guides 851 and 852 move. Next, the winding operation of the paper 2 will be described.

Now, as shown in FIG. 6, the leading end of the sheet 2 which has entered the sheet winding space of the winding section 85 is guided by the guide 8
4, the guide 852 and the guide 851 are advanced, but at this time, since the flexible film 88 forms a part of the guide of the cylindrical space, the flexible film 88 advances along the flexible film 88 and makes a round. . Here, the flexible film 88 is provided in order to make the interval between the guide 84 and the guide 851 as narrow as possible so that the peripheral guide shape is close to a cylindrical shape. Further, by providing the thin flexible film 88,
It is also possible to make contact with the surface of the guide 84, and the sheet 2 can be stably made to go around once.

Thereafter, the paper 2 is wound around the inner space of the paper 2 while being guided by the inner surface of the paper 2 which has made a round (this state is shown in FIG. 8).

In this case, since the surface of the assist roller 87 is always in a position projecting from the inscribed circle of each guide, the outer periphery of the sheet 2 and the assist roller 87 are surely brought into contact with each other, and the sheet 2 is conveyed by the third conveying roller 81. While being fed in, the assist roller 87 is given a rotational force to wind it.

When the paper 2 is wound up to a certain extent, it cannot be taken up while being inserted inside the paper 2. Therefore, as shown in FIG. 9, the sheet 2 is wound outward while increasing its diameter. In this case, since contact surfaces of the guide 84, the guide 852, and the guide 851 with the paper 2 are provided with a resin having a small friction coefficient, the contact resistance with the paper 2 is smaller than the paper conveying force. Then, the diameter of the sheet 2 becomes large and the guides 84, 852,
When the contact pressure with 851 increases and the self-weight of the sheet 2 increases, the guide 851 is pushed counterclockwise against the biasing force of the above-mentioned torsion coil spring 89. In this embodiment, the sheet 2 having a length of 10 m is set to be able to be wound, which corresponds to the amount of rotation of the guide 851 through 12 degrees.

When the guide 851 is pushed down, the guide 852 accordingly moves clockwise with the roller 852b being in contact with the bent portion 851a. As a result, the space of the winding unit 85 expands while moving the center of the wound paper 2 while keeping the substantially cylindrical shape in the moving direction of the guide 851.

In this case, the paper 2 is the assist roller 87.
Is placed below in the direction of gravity, and the surface of the assist roller 87 is projected beyond the inscribed circle of the winding space, so that the rolled-up sheet 2 is reliably attached to the surface of the assist roller 87 by its own weight. It is possible to make contact and obtain a sufficient conveying force. Further, in the paper take-up space of the take-up unit 85, since the paper insertion port is located at the upper part, there is no hindrance to the insertion and conveyance of the paper even if the paper diameter increases and the weight of the paper 2 increases.
Further, the guide 851 and the guide 852 do not change the position of the flexible film 88 and the plate member 841 of the guide 84 forming the moving sheet insertion port, so that the sheet can be stably inserted and conveyed.

After that, when the winding is completed, the drive motor 107 reversely rotates by about 53 pulses and stops. As a result, as shown in FIG. 10, the guide 851 is rotated about 40 degrees counterclockwise by the drive mechanism, and the guide 852 is also rotated clockwise by the spring 86. As a result, the roller 852b of the guide 852 becomes
Since it is separated from a by a large distance, it is further rotated by a spring 86 and stopped by a rocking restricting portion (not shown).

In this case, the guide 851 has a flexible film 88, which is
Since the guide 851 can be largely moved in a small space because it can be bent even if it interferes with the bracket 822 of the pinch member 82, the guide 85 can be moved.
Since the space between 1 and the guide 84 is widely opened, the paper 2 which has been wound up falls between these spaces by its own weight.

The sheet 2 falling by its own weight falls to the stocker 9 along the third guide 93, but when it falls, it rolls along the guide 851 surface and the slope of the third guide 93. In this case, the guide 851 is wound in the direction in which the paper 2 is wound.
Since the surface and the slope of the third guide 93 are set, even if the end portion of the rolled-up paper 2 is not fixed, the rolled-up paper does not spread and falls in the stocker 9 while keeping the rolled-up posture. It is stored.

On the other hand, when the drive motor 107 rotates in the reverse direction and stops, the drive force is not transmitted to the cutter unit 7 by the action of the one-way clutch 106 incorporated in the cutter drive gear 105. Therefore, the leading edge of the succeeding sheet 2 cut by the Y cutter 71 is not conveyed and is stopped. Further, in the image forming section, since the image formation is continued while the sheet is conveyed by the conveying roller 3 shown in FIG. 1, the recording sheet 2 is bent between the conveying roller 3 and the cutter unit 7. That is, since the succeeding sheet 2 is not conveyed into the space of the winding section 85 until the wound sheet 2 is discharged, the forward / reverse rotation of the drive motor 107 can be performed without special control. The sheet conveyance between the cutter unit 7 and the winding device 8 can be aligned simply by controlling the.

As described above, in this embodiment, the wound paper 2 and the unnecessary paper which becomes the dust whose path is switched by the gate 95 are stored in the common stocker. That is, the stocker is commonly used so that the wound paper 2 can be stored without providing a special stocker. On the other hand, small-sized output sheets are discharged to the sheet discharge tray 97 on the upper surface of the apparatus by the gate 95 and the guide 84 as described above, and are stacked and stored therein. Therefore, it is not necessary to search for the small size paper in the stocker, and the small size paper is not damaged by the fall of the wound paper 2. Further, although the rolled paper 2 is mixed with a portion that becomes dust, the size of the paper is large and the paper is rolled, so that it is easy to determine and is not damaged when taken out.

When the discharge of the rolled paper is completed, the drive motor 107 starts the normal rotation again. At this time, since the driving direction of the one-way clutch 104 is the direction to transmit to the assist roller 87, the guide 851 is returned to the initial position by the biasing force of the torsion coil spring 89, and the bent portion 851a resists the force of the spring 89 and guides 852. Since the roller 852b is pushed up, the guide 852 also returns to the initial position. Next, FIG. 1 shows the overall operation of the above configuration.
The flow chart of No. 1 will be described.

In this case, it is first determined whether the paper size is A0 or larger (step 111). Here, if YES, it is determined whether the material of the paper is film or synthetic paper (step 112). If NO in all other cases, the solenoid 96 is selectively driven to raise the gate 95 upward as shown in FIG. 4 (step 113).

Then, the guide 84 is moved to the position shown in FIG. 6, the conveying path is switched to the winding section 85 side (step 114), and the sheet is wound by the winding section 85 (step 115). Then, when the winding is completed, the sheet is discharged to the stocker (step 11).
6).

On the other hand, if NO in step 111, the effective image area of the paper is determined (step 11).
7). If NO here, as shown in FIG. 3, the solenoid 96 is selectively driven to lower the gate 95,
The paper is discharged to the stocker (step 118).

If YES in step 111, the solenoid 96 is selectively driven to raise the gate 95 upward as shown in FIG. 4 (step 11).
9). Then, the guide 84 is moved to the position shown in FIG. 5, the conveyance path is switched to the paper discharge tray 97 side (step 120), and the paper is discharged to the paper discharge tray 97 on the upper surface of the apparatus.

When it is determined in step 112 that the material of the paper is film or synthetic paper, the process proceeds to step 118, and the solenoid 96 is selectively driven to lower the gate 95 downward as shown in FIG. The paper will be discharged to the stocker. Next, the operation of selecting the sheet discharge path according to the material of the sheet will be described.

In the image forming apparatus to which the present embodiment is applied, paper such as trespassing paper, transparent film, synthetic paper and the like may be used in addition to standard paper. Since the image forming conditions differ depending on the material of the paper, the operator generally sets some conditions, for example, by selecting the type of paper to be used from a panel or the like.

Further, when the paper is wound and discharged as in this embodiment, the winding performance is greatly influenced by the material of the paper. Paper with low rigidity such as standard paper and treasuring paper can be easily wound up, but transparent film and synthetic paper based on resin have high rigidity and have a large force to swell outward when winding up. . In such a sheet, there is a case in which the sheet swells when it is wound and then discharged, so that it cannot be dropped and discharged properly. Especially when the winding length is short (for example, 2 m
In the following), the bulge during discharge is remarkable. Therefore, in the present invention, the discharge path to be used for sheet discharge is selected with reference to the material of the sheet used in advance and the sheet size during image formation.

Specifically, regardless of the material, small-size paper that cannot be rolled up is discharged to the paper discharge tray 97 on the upper surface of the apparatus by the gate 95 and the path switching guide 84.

In the non-image area, the second guide 92 and the third guide 9 are operated by the gate 95 regardless of the paper size and material.
It is guided to the path formed by 3 and discharged to the stocker.

Usually, in the case of the paper size to be wound and discharged, when the paper material is a resin-based transparent film or synthetic paper, for example, when the length is 2 m or less, it is not conveyed to the winding and Similar to the image part, it is discharged to the stocker as it is. In order to prevent troubles in the winding section 85, it is certain that no winding is performed depending on the paper material. Long paper that is not rolled up in the stocker will be ejected, but resin-based paper will not be damaged even if it is not rolled up. Next, FIG. 12 illustrates processing of jammed paper.

Like the guide 851, the first guide 91 is swingably held by the bearing of the side plate of the third conveying roller 81. In this case, the torsion coil spring 89 has one end fixed to the guide 851 and the other end fixed to the first guide 9.
1, the guide 851 and the first guide 91 are in contact with each other.
Are urged about the shaft of the third conveying roller 81 in the directions in which they repel each other by the urging force of the torsion coil spring 89.

On the other hand, the paper discharge tray 97 is fixed to the cover 98 so as to enter the device through the hole of the device upper surface cover 98, and the first guide 91 resists the biasing force of the screw coil spring 89. And push it down to fix the position.

Then, by the gate 95, the roll paper, which has a different path from the waste paper, is merged on the extension line of the second transport path constituted by the second guide 92 and the third guide 93. By merging with the wide second transport path as described above, the guide 851 can be largely opened without increasing the size of the apparatus.

Therefore, in this way, the paper discharge path is common to the waste paper and the roll paper, so that the transport path is simple and the operator can easily handle even if a paper jam occurs. . For example, when a paper jam occurs, processing of the second transport path, which is a path for discharging waste paper from the paper discharge port, can be performed. That is, by manually pushing down the guide 851 around the shaft of the third transport roller 81, the paper roll can be removed at the take-up unit 85, and the paper ejection tray 97 can be removed to remove the first guide. 91 is lifted up by the urging force of the torsion coil spring 89 to the upper side of the arrow shown in the figure, and the sheet removal process of the first transport path can be performed.

As a result of the first guide 91 being lifted by the force of the torsion coil spring 89, the spring force becomes weak and the guide 8
51 can also be moved downward at the same time, and the guide 852 can be moved in conjunction therewith to open the winding unit 85 in an interlocking manner. When the paper conveyance is stopped due to a power failure during winding, the first conveyance path is opened to cut the paper 2, and the winding unit 8
It is also possible to remove the paper 2 that is being wound from the paper 5. The present invention is not limited to the above-mentioned embodiments, and can be carried out by appropriately modifying it without departing from the scope of the invention.

[0087]

According to the present invention, the driving means of the cutting means for conveying and cutting the long paper and the conveying means for conveying the paper to the take-up storage portion are common, and the long paper to be conveyed is As a winding and storing section for winding, there is a storage space section formed of a plurality of sheet guide members, and at least one sheet guide member is movable so that a part of the storage space section can be opened. Since the drive source is also used to drive the movable sheet guide member of the storage unit, the structure of the drive unit can be simplified.

When the drive source is operated in the positive direction, a driving force for conveying and cutting the long paper by the conveying means and the cutting means is applied, and in the case of operating in the negative direction, the conveying means and the cutting means are operated. The transmission mechanism is operated so as to block the driving force and move only the movable sheet guide member to the position where a part of the storage space is opened. It is possible to efficiently and smoothly carry out the conveyance, cutting, and winding of the long paper to the discharge of the long paper wound.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a paper conveyance unit according to an embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a cutter unit according to an embodiment.

FIG. 3 is a diagram showing a schematic configuration of a sheet path between a cutter unit and a sheet discharging device according to an embodiment.

FIG. 4 is a diagram showing a schematic configuration of a sheet path between a cutter unit and a sheet discharging device according to an embodiment.

FIG. 5 is a diagram showing a schematic configuration of a paper discharge device according to an embodiment.

FIG. 6 is a diagram showing a schematic configuration of a paper discharge device according to an embodiment.

FIG. 7 is a diagram for explaining a cut state of each part of the sheet according to the embodiment.

FIG. 8 is a diagram for explaining a winding state of the paper in the winding portion space of the embodiment.

FIG. 9 is a view for explaining the winding state of the paper in the winding portion space of the embodiment.

FIG. 10 is a diagram for explaining a paper discharge state of paper in the winding portion space of the embodiment.

FIG. 11 is a flowchart for explaining the overall operation of one embodiment.

FIG. 12 is a diagram for explaining processing of jammed paper according to an embodiment.

[Explanation of symbols]

1 ... Roll paper, 2 ... Paper, 3 ... Conveying roller, 4 ... Electrostatic recording head, 5 ... Developing unit, 6 ... Intermediate winding roller,
7 ... Cutter unit, 71 ... Y cutter (paper conveyance right-angled cutter), 72 ... X cutter, 73 ... First conveyance roller,
74 ... 2nd conveyance roller, 8 ... Paper discharge device, 81 ... 3rd conveyance roller, 82 ... Pinch member, 821 ... Rotation center, 822
... Bracket, 822a ... Flexible film, 83 ... Paper discharge pinch roller, 84 ... Guide, 841, 842 ... Plate member, 843 ... Swing shaft, 844 ... Comb-tooth shaped joint portion, 85
... Winding portion, 851, 852 ... Guide, 852a ... Bending portion, 852b ... Roller, 86 ... Spring, 87 ... Assist roller, 88 ... Flexible film, 89 ... Torsion coil spring,
9 ... Stocker, 91 ... First guide, 911 ... Tip part, 9
2 ... Second guide, 93 ... Third guide, 94 ... Obstacle protrusion,
95 ... Gate, 96 ... Solenoid, 97 ... Discharge tray,
98 ... Device top cover, 99 ... Flexible member, 101 ... Third transport roller gear, 102 ... Assist roller gear, 10
3 ... Fourth idler gear, 104 ... One-way clutch,
105 ... Cutter drive gear, 106 ... One-way clutch, 107 ... Drive motor, 108 ... Motor gear, 109
… First idler gear, 110… Second idler gear, 11
1 ... Third idler gear.

Claims (3)

[Claims] 1. A transporting means for transporting a long paper, and a storage space formed by a plurality of paper guide members for winding up the long paper transported by the transporting means,
A take-up storage unit in which at least one paper guide member is movable so that a part of the storage space can be opened; a drive source capable of forward and reverse operation; And a drive unit having a transmission mechanism that applies a driving force and that moves the movable sheet guide member to a position where a part of the storage space is opened by operating the driving source in the negative direction. A long paper transport device characterized by the above. 2. The drive source is composed of a pulse motor, and a part of the storage space by the movable paper guide member is opened by rotation of the pulse motor in the negative direction corresponding to the number of pulses according to the amount of movement. The long paper transport apparatus according to claim 1, wherein the amount of movement in the direction is determined. 3. Conveying means for conveying the long paper, cutting means for cutting the long paper conveyed by the conveying means to a predetermined size if necessary, and conveying through the cutting means. A take-up storage part having a storage space part formed by a plurality of paper guide members for winding a long paper, and at least one paper guide member being movable so that a part of the storage space part can be opened. A driving source capable of forward and reverse operation, a driving force is applied to the conveying means and the cutting means by the driving of the driving source in the positive direction, and a driving force for the cutting means is blocked by the driving of the driving source in the negative direction, A long paper transporting device, comprising: a drive unit having a transmission mechanism for applying a driving force for moving the movable paper guide member to a position where a part of the storage space is opened.