JP2001278522A - Sheet material conveying device, sheet material processing device, and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet material conveying device capable of holding the curvature radius of a conveying route at a small curvature radius, and sufficiently suppressing the conveying resistance and frictional sound of a conveyed article and the deterioration of conveyance when a thick sheet material or a bundle of sheet materials is conveyed along a curved conveying route. SOLUTION: A conveying guide plate 102 among conveying guide plates for connecting, to each other, a pair of feed rollers 100a and 100b of a sheet material conveying device is rotatable about the center axis 103 of the feed roller 100b. A torsion coil spring 104 is installed on the center shaft 103 of the roller 100b. Immediately after the rear end part of a booklet P conveyed by the feed roller 100a is released from the feed roller 100a, the conveying guide plate 102 is pressed open by a moment produced by the elastic force of the booklet P.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying apparatus for conveying a sheet material or a bundle of sheet materials, and a sheet processing apparatus provided with the sheet conveying apparatus.

[0002]

2. Description of the Related Art Conventionally, a sheet material discharged from an image forming apparatus is subjected to post-processing, and thereafter, the processed sheet material is conveyed to a sheet material stacking section, and is stacked on a sheet discharging device (sheet material processing device). Are as described below.

In this type of apparatus, first, a sheet material on which an image is created by an image forming apparatus main body is discharged at a predetermined timing from a predetermined discharge port of the image forming apparatus. The sheet material is received from a receiving port of the sheet binding device, nipped by a sheet material transport roller, and transported to a predetermined position. Thereafter, a predetermined number of sheets to be stapled are aligned and loaded on a sheet material stacking section for temporarily stocking the sheets.

When a predetermined number of sheets are accumulated, the discharge from the image forming apparatus is temporarily stopped, and in the meantime, a predetermined portion of the sheet bundle is bound by a binding means such as a staple.

The predetermined site to be bound may be the transport direction of the sheet material bundle, that is, the center of the sheet material bundle in the longitudinal direction.

In such a binding process, when a bundle of sheet materials is bound at a central portion in the longitudinal direction, the bundle of sheet materials is thereafter sandwiched by a pair of transport rollers opposed to each other and transported to a saddle stitch portion by a predetermined distance. The Rukoto. Therefore, the central portion of the sheet material bundle is bent by the veneer member in a direction perpendicular to the surface of the conveyed sheet material bundle, and the veneer member is located on the side facing the veneer member with the sheet member interposed therebetween. A booklet is created by being pushed into a folding roller and sandwiched. The created booklet is then nipped by a discharge roller and discharged through a bent conveyance path.

[0007] By repeating this operation, the created booklets are sequentially stacked on a stack portion located downstream thereof.

[0008]

However, the above-mentioned conventional apparatus has the following problems.

That is, when a relatively thick transported material such as a bundle of sheet materials or a booklet is transported along a bent transport path, the transported material is considered in consideration of the bending rigidity and elasticity of the transported material. It is necessary to increase the radius of curvature of the guide.

[0010] Therefore, the space occupied by the transport guide becomes large, and the apparatus becomes large.

As a solution to this problem, a method is conceivable in which the radius of curvature of the bent portion of the transport guide is reduced in order to reduce the size of the apparatus, and instead, the transport is assisted by strengthening the drive of the transport rollers and the like.

However, even if the above-described apparatus configuration is adopted, the transport resistance at the bent portion of the transport guide, the rubbing noise, the deterioration of the transported object, the curl,
The occurrence of jams and the like cannot be avoided.

[0013] On the other hand, a method of securing a wide transport path space in the bent portion in advance and suppressing transport resistance and the like when transporting a thick bundle of sheet material or a booklet or the like in a bent transport path. However, in such a configuration, the leading end of the conveyed article may become violent while passing through the curved conveyance path, and the frequency of occurrence of JAM is further increased.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has as its object to convey a conveyed object such as a thick sheet material, a bundle of sheet materials, or a booklet. In conveying along the sheet, the sheet material conveying device which can keep the radius of curvature of the conveying path small, and can sufficiently suppress the conveying resistance, the rubbing noise, and the deterioration of the conveying of the conveyed object, and such a sheet. An object of the present invention is to provide a sheet material processing apparatus and an image forming apparatus provided with a material conveying device.

[0015]

In order to achieve the above object, a first aspect of the present invention comprises a pair of conveyance guide plates forming a bent conveyance path, and a sheet material is provided between the pair of conveyance guide plates. Or, in a conveyance device that guides a bundle of sheet materials and conveys while changing the direction, at the time of conveyance of the sheet material or the bundle of sheet materials, at least a part of a conveyance guide plate that forms an outer peripheral side of the bent conveyance path is used. The gist of the present invention is to move and expand the transport path space of the bent transport path.

Further, a part of the transport guide plate, which forms the outer peripheral side of the bent transport path and moves when the sheet material or the bundle of sheet materials is transported, rotates around the leading end in the transport direction as a rotation axis. Thus, it is preferable to widen the transport path space of the bent transport path by moving the rear end of the transport path in the outer peripheral direction of the bent transport path away from the transport path.

Further, a part of the transport guide plate forming the outer peripheral side of the bent transport path is urged toward the inner peripheral side, and a part of the transport guide plate forming the outer peripheral side and the part of the bent transport path are urged. An urging means for holding the conveying path space having a predetermined shape formed by an inner peripheral conveying guide plate, and a part of the conveying guide plate forming an outer peripheral side of the bent conveying path, Preferably, the rear end of the sheet material or the bundle of sheet materials in the conveyance direction moves when passing through a part of the conveyance guide plate, so as to enlarge the conveyance path space of the bent conveyance path.

Also, the bending reaction force of the conveyed sheet material or the bundle of sheet materials opposes the urging force of the urging means and pushes a part of the conveyance guide plate which forms the outer peripheral side of the bent conveyance path. By moving, the transport path space of the bent transport path is preferably expanded.

Further, it is preferable that the apparatus further comprises a restricting means for appropriately permitting and restricting the movement by a part of the transport guide plate which forms the outer peripheral side of the bent transport path.

According to a second aspect of the present invention, there is provided a sheet material processing apparatus for conveying a processed sheet material or a bundle of sheet materials through the sheet conveying device and discharging the sheet material to the stack section. And a processing unit for mechanically processing a sheet material or a bundle of sheet materials, and a stack unit for discharging and stacking the sheet material or the bundle of sheet materials. .

According to a third aspect of the present invention, after an image forming process is performed on the sheet material, mechanical processing, transport, and discharge of the sheet material or the bundle of the sheet material subjected to the image forming process are performed together. An image forming apparatus includes a sheet material processing apparatus having the above configuration.

According to the above configuration, when a conveyed object such as a sheet material or a booklet passes through the bent conveyance path, even if a bent conveyance path having a small radius of curvature is formed as a measure for miniaturizing the apparatus, the conveyance path can be bent. At least a part of the transport guide plate forming the outer peripheral side secures a space in which the transport guide plate pair can move, and the distance between the pair of transport guide plates at the bent portion is increased, so that the transport resistance and the jam (JA) due to the elasticity, rigidity, etc.
M), curl of the transported object, rubbing noise, etc. are reduced. Furthermore,
Since the interval of the transport path is widened after the leading end of the transported object passes through the bent portion, the JAM generated when the transported object rampages in the bent transported path can be suitably avoided.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of a sheet conveying apparatus and a sheet processing apparatus according to the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view schematically showing a main internal structure of a sheet processing apparatus having a built-in sheet conveying apparatus (mechanism) according to a first embodiment of the present invention.

First, 1 is an image forming apparatus main body, and 2 is a sheet material processing apparatus having a saddle stitch function connected in parallel to the image forming apparatus 1. This sheet material processing apparatus 2 can staple a plurality of sheet materials on which image formation has been completed by the image forming apparatus main body 1 as a bundle at a predetermined position with staples, form a booklet that can be opened, and further stack the booklets. Device.

Next, the operation of each component in the sheet processing apparatus 2 will be described.

As shown in FIG. 1, the apparatus 2 has an inlet 3 and an inlet roller pair 4 for receiving a sheet material (not shown) on which an image has been formed from the image forming apparatus 1, and has a downstream direction. It has a pair of transport guide plates 5 and a pair of transport rollers 6 for transporting the sheet material, and has a pair of discharge rollers 9 at the downstream end 8 of the pair of transport guide plates 5 for transporting the sheet material in the arrow direction 7. Then, the conveyed sheet material is discharged onto the tray 10.

Here, a predetermined step 11 is provided between the position of the discharge roller pair 9 and the upper surface of the tray 10, and the sheet material falls down the step 11 by its own weight. Further, the tray 10 is provided at a predetermined angle with respect to the horizontal, and the sheet material slides down on the tray 10 by its own weight in the arrow direction 12.

Next, the sheet material that has slid down on the tray 10 in the direction of the arrow 12 by its own weight by the paddle roller 14 which is constantly rotating in the direction of the arrow 13 further contacts the abutting plate 15 at the end of the sheet material. To align the sheet material in the transport direction.

Thereafter, alignment in the non-transport direction is performed by the alignment plate pair 16 (an alignment plate disposed on the near side on the paper is not shown). This operation is repeated a plurality of times, and when a predetermined number of sheet materials are stacked on the tray 10, the image forming apparatus 1
The discharge of the sheet material from is stopped. Next, the sheet bundle is moved to the nip roller pair 17 which has been retracted up and down.
Nip. Next, the abutment plate 15 is
8 and is conveyed a predetermined distance by the nip roller pair 17.

After that, by the stapler unit 19,
A central portion in the transport direction of the bundle of sheet materials is bound. Thereafter, the bundle of sheet materials is further transported by the transport roller pair groups 20a, 20b, and 20c. A reflection sensor 21 is provided downstream of the pair of conveying rollers 20c, and the sensor 21 detects the arrival of the leading end of the bundle of sheet materials in the conveying direction.

Thereafter, the conveying roller pair 20c conveys the sheet bundle (hereinafter referred to as booklet P) by a predetermined distance and stops. Then, the stopped sheet material bundle is protruded in the direction of arrow 23 by the protruding plate 22, and is sandwiched by the folding roller pair 24. By rotating the folding roller 24 in the direction of the arrow 25, the booklet folded in half is transferred to the transport roller pair group 10.
The transport path advances in the direction of arrow 26 according to 0a and 100b, and is stacked in a stacking box 27 as a stack unit.

Next, the portions A and B surrounded by broken lines in FIG. 1 will be described.

In FIG. 1, two portions surrounded by broken lines, A,
In B, a pair of transport guide plates each including a bent portion, and two pairs of transport rollers before and after the pair of transport guide plates are provided. Since the operations here are the same except for the difference in the shape of the conveyed object, FIGS. 2 (a), (b), and (c) show only the operation at a location B indicated by a broken line.
This will be described with reference to FIG.

In the pair of transport guide plates connecting the pair of transport rollers 100a and 100b, the inner transport guide plate with a small radius of curvature is denoted by 101, and the transport guide plate with a large radius of curvature at a position opposed to 101 is denoted by 102. The transport guide plate 102 is a guide plate having a straight shape on the upstream side and a curvature shape on the downstream side in the transport direction of the booklet P. The same applies to the transport guide plate 101 located at a position facing the transport guide plate 102.

However, while the transport guide plate 101 is fixed, the transport guide plate 102 is a shaft 10 which is the central axis of the roller on the outer peripheral side of the transport roller pair 100b.
3 can be rotated. The transport roller pair 10
0b has a torsion coil spring 104 as a biasing means on the center axis 103 of the roller on the outer peripheral side, and the torsion coil spring 104 causes the conveyance guide plate 102 to have an arrow 105 centered on the center axis 103. The direction spring is acting.

In this configuration, as shown in FIG. 2B, the leading end of the booklet P in the transport direction passes through the transport roller 100a, and then passes through the transport path formed by the transport guide plates 101 and 102. Thereafter, when the leading end of the booklet P reaches the bent portion, the transport guide plate 102 is moved by the arrow 1.
A force for pushing in the 06 direction acts. However, the spring force of the torsion coil spring 105 is set to be larger than this force so that the conveyance guide plate 102 does not rotate around the central axis 103.

Further, as shown in FIG. 2C, the booklet P is transported by the transport roller 100a, the leading end of the booklet P is nipped by the transport roller 100b, and the rear end of the bundle of the booklet P is moved from the transport roller 100a. At the same time as the release, the transport guide plate 102 is expanded by the moment due to the elastic force of the booklet P.

Thereafter, the booklet P is further conveyed, and the moment for spreading the conveyance guide plate 102 is weakened.
When the moment by the torsion coil spring 105 wins, the transport guide plate 102 returns to the original position.

(Second Embodiment) Next, a second embodiment of the present invention will be described focusing on differences from the first embodiment.

FIGS. 3 and 4 are views illustrating a sheet material processing apparatus including a sheet material conveying apparatus as a second embodiment according to the present invention.

First, 1 is an image forming apparatus main body, and 2 is a sheet material processing apparatus having a saddle stitch function connected in parallel to the image forming apparatus 1. The sheet material processing apparatus 2 can bind a plurality of sheet materials of which the image formation has been completed by the image forming apparatus main body 1 into one bundle, stapling them at a predetermined position with a staple, form a booklet that can be opened, and stack them. Device.

Next, the operation of each component in the sheet processing apparatus 2 will be described. The apparatus 2 receives a sheet material (not shown) on which image formation has been completed from the image forming apparatus 1.

The sheet material processing apparatus has an entrance 3 and an entrance roller pair 4 and the like, and a conveying guide plate pair 5 and a conveying roller pair 6 for conveying the sheet material in the downstream direction.
, And conveys the sheet material in the arrow direction 7. A sheet discharge roller pair 9 is provided at a downstream end 8 of the conveyance guide plate pair 5, and discharges the conveyed sheet material onto a tray 10.

Here, a predetermined step 11 is provided between the position of the paper discharge roller pair 9 and the upper surface of the tray 10, and the sheet material falls down the step 11 by its own weight. Further, the tray 10 is inclined at a predetermined angle with respect to the horizontal direction, and the sheet material placed on the tray slides down in the arrow direction 12 by its own weight.

Next, the sheet material that has slid down on the tray 10 in the direction of the arrow 12 by its own weight by the paddle roller 14 that is constantly rotating in the direction of the arrow 13 further contacts the abutting plate 15 at the end of the sheet material. To align the sheet material in the transport direction. Thereafter, the alignment in the non-transport direction is performed by the alignment plate pair 16 (not shown). This operation is repeated a plurality of times, and when a predetermined number of sheet materials are stacked on the tray 10, the discharge of the sheet materials from the image forming apparatus 1 is stopped.

Next, the sheet bundle is nipped by the nip roller pair 17 which has been retracted up and down. Next, the butting plate 15 is retracted to the position indicated by the two-dot chain line 18, and the sheet material is conveyed by the nip roller pair 17 for a predetermined distance. Thereafter, the stapler unit 19 binds the central portion of the bundle of sheet materials in the transport direction. Thereafter, the bundle of sheet materials (hereinafter, referred to as booklet P) is further transported by the transport roller pair groups 20a, 20b, and 20c. A reflection sensor 21 is provided downstream of the pair of transport rollers 20c, and detects the leading end of the booklet P in the transport direction. Thereafter, the conveying roller pair 20c is moved to a predetermined distance
And stop. Then, the stopped booklet P is protruded in the direction of the arrow 23 by the protruding plate 22, and is sandwiched by the pair of folding rollers 24. The folding roller 24 is moved in the arrow direction 25
, The booklet P folded in half is moved along the conveyance path by the conveyance roller pair groups 200a and 200b as indicated by arrows 26.
Proceed in the direction. Then, the leading end of the loading box 27 is brought into contact with the wall 28 against which the leading end of the loading box 27 is contacted.
Will be loaded inside.

Next, a portion C surrounded by a broken line in FIG. 3 will be described with reference to FIG.

As shown in FIG.
Of the pair of transport guide plates connecting between a and 200b, the inner transport guide plate with a small radius of curvature is denoted by 201, and the transport guide plate with a large radius of curvature at a position opposite to 201 is denoted by 202. The transport guide plate 202 is a guide plate having a curvature shape over the entire area. On the other hand, the transport guide plate 201 located at a position facing the transport guide plate 202 is a guide plate having a curvature shape on the upstream side and a straight shape on the downstream side in the transport direction of the booklet P. .

Further, while the transport guide plate 201 is fixed, the transport guide plate 202 is a transport guide plate rotatable about a shaft 203 and the center of the outer peripheral roller of the transport roller pair 200b. . The transport roller pair 200
In the center of the roller on the outer peripheral side of b, a shaft 203 has a torsion coil spring 204, and the torsion coil spring 204 acts on the conveyance guide plate 202 in the direction of arrow 205 around the center axis 203. ing.

In FIG. 4, the transport guide plate 2
In reference numeral 02, rotation is stopped by hooking a key portion of a solenoid (regulating means) 206 on a projection 207 which is a part of the transport guide plate 202. The transport guide plate 201 has a booklet passage detection sensor 208.

In this configuration, the leading end of the booklet P passes through the pair of transport rollers 200a and is further transported. After the leading end of the booklet P passes through the pair of transport rollers 200b, the leading end of the booklet P is detected by the booklet passage detection sensor 208. When the passage of the conveying guide plate 202 is detected and the solenoid 206 is once pulled based on the signal, the rotation stop of the conveyance guide plate 202 is released. Therefore, after the rear end of the booklet P passes through the pair of conveying rollers 200a, the booklet conveying guide plate 202 is pushed and spread in the direction of the arrow 209 by the elastic force of the booklet P. Then, the booklet P is further conveyed, and when the moment for pushing and spreading the conveyance guide plate in the direction of arrow 209 is weakened and the moment by the torsion coil spring 204 is overcome, the booklet P is returned to the original position. At this time, the rotation of the solenoid is stopped so that the toothed portion of the solenoid rides over the slope of the projection 207.

(Third Embodiment) Next, a third embodiment of the present invention will be described focusing on differences from the first embodiment.

FIGS. 5 and 6 illustrate a sheet processing apparatus including a sheet conveying apparatus according to a third embodiment of the present invention.

First, in FIG. 5, 1 is an image forming apparatus main body, and 2 is a sheet material processing apparatus having a saddle stitch function connected in parallel to the image forming apparatus 1. The sheet material processing apparatus 2 staples a plurality of sheet materials on which image formation has been completed by the image forming apparatus main body 1 as a bundle at a predetermined position with a staple, opens the booklet into an openable booklet, and then puts it in a predetermined stacking box. It is a device to be loaded.

Next, the operation of each component of the sheet processing apparatus 2 will be described. The apparatus 2 has an entrance 3 and an entrance roller pair 4 for receiving a sheet material (not shown) on which image formation has been completed from the image forming apparatus 1, and a conveyance guide plate pair 5 for conveying the sheet material in the downstream direction. And a conveying roller pair 6, and conveys the sheet material in the arrow direction 7. A sheet discharge roller pair 9 is provided at a downstream end 8 of the pair of conveyance guide plates 5, and the conveyed sheet material is discharged onto a tray 10. Here, a predetermined step 11 is provided between the position of the discharge roller pair 9 and the upper surface of the tray 10, and the sheet material falls down the step 11 by its own weight. Further, the tray 10 is provided at a predetermined angle with respect to the horizontal, and the sheet material slides down on the tray 10 by its own weight in the arrow direction 12.

Next, the sheet material that has slid down on the tray 10 in the direction of the arrow 12 by its own weight by the paddle roller 14 constantly rotating in the direction of the arrow 13 is further brought into contact with the butting plate 15 at the end of the sheet material. To align the sheet material in the transport direction. Thereafter, the alignment in the non-transport direction is performed by the alignment plate pair 16 (not shown). This operation is repeated a plurality of times, and when a predetermined number of sheet materials are stacked on the tray 10, the discharge of the sheet materials from the image forming apparatus 1 is stopped. Next, the bundle of sheet materials is nipped by the nip roller pair 17 which has been retracted up and down until now. Next, the butting plate 15 is retracted to the position indicated by the two-dot chain line 18, and the bundle of sheet materials (hereinafter referred to as a booklet P) is conveyed by the nip roller pair 17 for a predetermined distance.

After that, by the stapler unit 19,
The booklet P is bound at the center in the transport direction. Thereafter, the booklet P is further transported by the transport roller pair groups 20a, 20b, and 20c. A reflection sensor 21 is provided downstream of the transport roller pair 20c, and the sensor 21 detects the leading end of the booklet P in the transport direction. Thereafter, the conveying roller pair 20c is moved a predetermined distance
And stop. Then, the stopped booklet P is protruded in the direction of the arrow 23 by the protruding plate 22 and is sandwiched by the folding roller pair 24. The folding roller 24 is moved in the arrow direction 25
, The booklet P folded in half is moved along the conveying path by the conveying roller pair group 300a, 300b with an arrow 26.
Then, the leading end of the booklet P is brought into contact with the leading end contacting wall 28 of the loading box 27 to be loaded in the loading box 27.

Next, FIG. 6 shows an enlarged portion D surrounded by a broken line in FIG.

In the pair of conveying guide plates connecting the pair of conveying rollers 300a and 300b, the inner conveying guide plate having a smaller radius of curvature is denoted by reference numeral 301, and the conveying guide plate having a larger radius of curvature is located at a position opposed to 301. The transport guide plate 302 is a guide plate having a curvature shape over the entire area. On the other hand, the transport guide plate 301 located at a position facing the transport guide plate 302 is a guide plate having a curvature shape on the upstream side and a straight shape on the downstream side in the transport direction of the booklet P. .

Further, while the transport guide plate 301 is fixed, the transport guide plate 302 is a transport guide plate that is rotatable about the central axis 303 of the outer peripheral roller of the transport roller pair 300b. .

As shown in FIG. 6, the transport guide plate 3
02 and the eccentric cam 305
The eccentric cam 305 is rotated by a stepping motor (not shown). The transport guide plate 301 has a booklet passage detection sensor 307.

In this configuration, the front end of the booklet P passes through the pair of conveying rollers 300a and is further conveyed, and the front end of the booklet P passes through the pair of conveying rollers 300b. Is detected, the eccentric cam 305 rotates a predetermined angle in the direction of arrow 308 based on the signal, and the conveyance guide plate 302 moves
Move in the 09 direction. When the booklet P is further conveyed and the rear end of the booklet P breaks the booklet passage sensor 307, the booklet P rotates again by a predetermined angle in a direction opposite to the eccentric cam arrow 308,
The transport guide plate 302 returns to the original position.

[0064]

As described above, according to the present invention,
When a conveyed object such as a sheet material and a booklet passes through a conveyed bent path, the conveyance resistance due to the elasticity and rigidity of the conveyed object and the jam (J
AM), curl of the conveyed object, rubbing noise and the like can be reduced. Therefore, the size of the entire apparatus can be easily reduced.

Further, since the interval of the conveyance path is widened after the leading end of the conveyed object passes through the bent portion, it is possible to suppress the JAM caused by the conveyed object rampaging in the bent conveyed path.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view schematically illustrating a main internal structure of a sheet processing apparatus including a sheet conveying apparatus according to a first embodiment of the present invention.

FIG. 2 is an exemplary sectional view showing a sheet material conveying operation according to the embodiment;

FIG. 3 is a sectional view schematically showing a main internal structure of a sheet material processing apparatus including a sheet material transporting apparatus according to a second embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view of a main part showing a sheet material conveying operation according to the embodiment.

FIG. 5 is a sectional view schematically showing a main internal structure of a sheet processing apparatus including a sheet conveying apparatus according to a third embodiment of the present invention.

FIG. 6 is an enlarged cross-sectional view of a main part showing a sheet material conveying operation according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image forming apparatus main body 2 Sheet material processing apparatus B, C, D Transport apparatus part (sheet transport apparatus) 100a, 100b Transport roller pair 101 Transport guide plate (fixed) 102 Transport guide plate (rotation) 104 Torsion coil spring 200a, 200b Transport roller pair 201 Transport guide plate (fixed) 202 Transport guide plate (rotated) 204 Torsion coil spring 206 Solenoid 208 Booklet passage sensor 300a, 300b Transport roller pair 301 Transport guide plate (fixed) 302 Transport guide plate (rotated) 303 Twist Coil spring 305 Eccentric cam 306 Rod 307 Booklet passage sensor P Sheet bundle (booklet)

Claims (7)

[Claims] 1. A sheet material having a pair of conveyance guide plates forming a bent conveyance path, guiding a sheet material or a bundle of sheet materials between the pair of conveyance guide plates, and conveying the sheet material while changing its direction. In the transport device, at the time of transporting the sheet material or the bundle of sheet materials, at least a part of a transport guide plate that forms an outer peripheral side of the bent transport path moves to expand a transport path space of the bent transport path. Characteristic sheet material transport device. 2. The sheet conveying apparatus according to claim 1, wherein a part of the conveying guide plate, which forms an outer peripheral side of the bent conveying path and moves when conveying the sheet material or a bundle of sheet materials, is provided. By rotating the front end in the conveyance direction as a rotation axis, the rear end in the conveyance direction is separated from the conveyance path toward the outer peripheral direction of the bent conveyance path to expand the conveyance path space of the bent conveyance path. A sheet material conveying device characterized by the above-mentioned. 3. The sheet conveying apparatus according to claim 1, wherein a part of the conveying guide plate that forms an outer peripheral side of the bent conveying path is urged toward an inner peripheral side to form the outer peripheral side. An urging means for holding the conveying path space having a predetermined shape formed by a part of the conveying guide plate and a conveying guide plate forming an inner peripheral side of the bent conveying path; and an outer peripheral side of the bent conveying path. A part of the conveyance guide plate that forms a part of the conveyance path space of the bent conveyance path moves when the rear end in the conveyance direction of the conveyed sheet material or the bundle of sheet materials passes through a part of the conveyance guide plate. A sheet material conveying device characterized by expanding the number of sheets. 4. The sheet conveying device according to claim 3, wherein a bending reaction force of the conveyed sheet material or a bundle of sheet materials opposes the urging force of the urging means, and the outer periphery of the bent conveyance path. A sheet material conveying device, characterized in that a conveying path space of the bent conveying path is expanded by pushing a part of a side conveying guide plate. 5. The sheet conveying apparatus according to claim 1, wherein a movement of a part of a conveying guide plate on an outer peripheral side of the bent conveying path is appropriately permitted and restricted. A sheet material conveying device further comprising a regulating means. 6. A sheet material conveying apparatus according to claim 1, a processing unit for mechanically processing a sheet material or a bundle of sheet materials, and the sheet material or sheet material. And a stack unit on which the bundle of sheets is discharged and stacked, and transports the processed sheet material or the bundle of sheet materials via the sheet material transport device and discharges the bundle to the stack unit. Sheet processing equipment. 7. A sheet material processing apparatus according to claim 6, wherein the sheet material is subjected to an image forming process, and then the sheet material or the sheet bundle subjected to the image forming process is mechanically processed. An image forming apparatus that performs processing, transport, and discharge together.