JP2002234637A - Paper carrying device, gluing bookbinding device, and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify constitution of a paper carrying device having a gluing mode and a non-gluing shift mode, and improve productivity and operability in a gluing bookbinding process. SOLUTION: This paper carrying device is composed of a first carrying means to hold a paper sheet to be carried, a positioning member to abut on a tip part of the paper sheet carried by the first carrying means, a detecting means to detect the tip part of the paper sheet carried by the first carrying means, and a second carrying means to hold the paper sheet, and carry it to a second carrying passage in a perpendicular direction to a first carrying means of the first carrying means. It has a direct discharge mode to discharge the paper sheet from the device by the first carrying means, a shift mode to shift the paper sheet from the first carrying passage for a specified quantity to be carried, and a paper direction changing mode to carry the paper sheet to the second carrying passage after the paper sheet is positioned by the first carrying means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper transport device for transporting a paper carried in from the outside and advancing it in a straight or right angle direction. The present invention relates to a glue binding apparatus for applying glue in a shape, and an image forming apparatus including the glue binding apparatus.

[0002]

2. Description of the Related Art In recent years, there has been provided a glue binding apparatus which performs a gluing process on a predetermined position of a sheet on which an image is recorded by a main body of an image forming apparatus such as a copying machine, a printer, or a multifunction machine of the same to perform bookbinding. I have.

[0003] As the glue processing device, (1) a device for discharging glue onto paper using a glue discharge nozzle, (2) a glue wheel is installed in a glue storage box, and glue is attached to the outer periphery of the rotating glue wheel. Device that makes the outer periphery of the glue wheel contact the paper to transfer
(3) A hot melt coating device that discharges a mixture of a hot melt agent (heat fusing agent) and heated compressed air from a nozzle is used.

In the bookbinding apparatus disclosed in Japanese Patent Publication No. 59-500907, the paper direction changing step and the glue applying step are arranged on substantially the same plane, and the aligning and pressing step is arranged below the glue applying step. Further below, a sheet bundle stacking step of stacking the discharged sheet bundle is arranged.

A paper transport direction changing device described in Japanese Patent Publication No. 2590477 is for converting a sheet in a right angle direction in a paper folding device or the like, and changes the direction of the sheet without being affected by the type of the sheet.

[0006] The paper transport method of the image forming apparatus described in Japanese Patent Publication No. 2676253 is a method of transporting a paper sheet to a front-operation-type image forming main body, and a sorter for recording paper sorting provided alongside the image forming main body. A sorting discharge conveyance path connected to the image formation conveyance path so as to receive the recording paper discharged from the image formation conveyance path, convey the recording paper in a substantially right angle direction, and feed the recording paper to the sorter; In this configuration, the preceding recording paper is received at the entrance of the right-angle transport path, and after being sent out therefrom, the recording paper interval is set such that the succeeding recording paper enters the right-angle transport path.

[0007]

A conventional paper transport device,
The glue binding apparatus has the following problems.

(1) If the paper transport path of the glue binding apparatus is arranged in a plane, the paper transport path becomes longer, which not only increases the size of the apparatus but also lowers the productivity of the glue binding process.

(2) A direct discharge mode in which a sheet conveyed from outside the image forming apparatus or the like is received and discharged directly to the outside of the apparatus, and a shift mode in which the sheet is displaced by a predetermined amount in a direction orthogonal to the sheet conveying direction and discharged. And a post-processing mode for receiving and transporting the paper and performing post-processing such as a gluing process, and a glue binding apparatus equipped with the paper transport apparatus are complicated and bulky, and productivity is increased. descend.

(3) After receiving and transporting a sheet carried in from the outside, stopping the sheet by abutting against a positioning member and positioning the sheet, when the sheet is started to be transported in a direction orthogonal to the sheet transport direction, the movement of the sheet, The sheet is bent, and post-processing such as gluing is not performed at an accurate position.

(4) At the time of rectilinear transport for receiving and transporting a paper conveyed from outside, the leading end of the paper abuts on a non-driven transport roller of the orthogonal paper transport means, and a paper transport failure occurs.

(5) When the paper passes straight between the upper and lower guide plates, or when the paper is transported in the orthogonal paper transport path, the leading end of the paper abuts on the transport roller that is not driven, resulting in poor paper transport. Occurs.

An object of the present invention is to provide a paper transport apparatus, a glue binding apparatus, and an image forming apparatus which solve the above problems.

[0014]

The above object is achieved by the following apparatus according to the present invention.

(1) A first transport means comprising a first transport drive roller and a first transport driven roller for receiving the transported paper, transporting the paper in a sandwiched manner, and the paper transported by the first transport means And a second transport drive roller and a second transport driven roller for nipping and transporting the paper in a second transport path in a direction orthogonal to the first transport path of the first transport means. A second sheet conveying means, wherein the first sheet conveying means discharges a sheet to the outside of the apparatus by the first sheet conveying means, and the first sheet conveying driven roller is stopped after the first sheet conveying drive roller is stopped. A roller is separated from the first transport driving roller, the second transport driven roller is pressed against the second transport driving roller, and the second transport driving roller is driven and rotated to feed a predetermined amount of paper to the second transport path. Shifted and stopped Thereafter, the second transport driven roller is separated from the second transport drive roller, and the first transport driven roller is pressed against the first transport drive roller,
A shift mode in which the transport drive roller is driven to rotate and the paper is discharged out of the apparatus by the first transport path, and the positioning member is caused to protrude above the paper passing surface of the first transport path to abut the leading end of the paper. After the positioning, the second transport driven roller is pressed against the second transport drive roller, and the second transport drive roller is driven and rotated to transport the paper to the second transport path. A sheet transport device characterized by the above-mentioned.

(2) A first transport means comprising a first transport drive roller and a first transport driven roller for receiving the transported paper, nipping and transporting the paper, and transporting the paper by the first transport means A detecting member provided near the positioning member, for detecting a front end of the sheet conveyed by the first conveying means, and a second member in a direction orthogonal to the first conveying path. A second transport unit including a second transport drive roller and a second transport driven roller for nipping and transporting the sheet in the transport path, a control unit for controlling each drive unit of the first transport unit and the second transport unit, The control means abuts the leading end of the sheet on the positioning member after detecting the passage of the leading end of the sheet by the detecting means, and after a predetermined time elapses, stops the drive rotation of the first transport drive roller. Let me After forming the deflection at the leading edge of the paper,
The second transport driven roller located near the leading edge of the paper is pressed against the second transport driving roller to clamp the leading edge of the paper, and then the first transport driven roller is moved from the pressure contact position of the first transport driving roller. The second transport driven roller located at a position other than the vicinity of the leading edge of the sheet is pressed against the second transport driving roller by releasing the front edge of the sheet, and the second transport driving roller is driven after the pressing operation. A paper transport device, wherein the paper transport device rotates and transports the paper by sandwiching the paper in the second transport path.

(3) A first transport means comprising a first transport drive roller and a first transport driven roller for receiving the transported paper, nipping and transporting the paper, and transporting the paper by the first transport means A detecting member provided near the positioning member, for detecting a front end of the sheet conveyed by the first conveying means, and a second member in a direction orthogonal to the first conveying path. A second transport unit configured to include a second transport driving roller for nipping and transporting the sheet in the transport path and a second transport driven roller, wherein the second transport driving roller is configured to enter the paper by the first transport unit. A sheet conveying device, wherein a conical surface is formed on a direction side, and a leading end of the sheet is conveyed by the first conveying means along the conical surface.

(4) A first transport unit comprising a first transport drive roller and a first transport driven roller for receiving the transported paper, transporting the paper in a sandwiched manner, and the paper transported by the first transport unit A detecting member provided near the positioning member, for detecting a front end of the sheet conveyed by the first conveying means, and a second member in a direction orthogonal to the first conveying path. A second transport unit including a second transport driving roller and a second transport driven roller for nipping and transporting the paper in the transport path, and a pair of guide plates disposed opposite to each other with a predetermined gap to guide the transported paper And a pressure contact position between the first conveyance driving roller and the first conveyance driven roller of the first conveyance means, and a pressure contact position between the second conveyance driving roller and the second conveyance driven roller of the second conveyance means. , The guide plate A sheet conveying device, wherein the sheet conveying device is disposed at a position opposite to a central sheet conveying reference plane therebetween.

(5) A first transport unit comprising a first transport drive roller and a first transport driven roller for receiving the transported paper, transporting the paper in a sandwiched manner, and the paper transported by the first transport unit A positioning member for abutting the leading end of the sheet, detecting means for detecting the leading end of the sheet conveyed by the first carrying means, and a second carrying path in a direction orthogonal to the first carrying path of the first carrying means. A second transport driving roller for nipping and transporting the paper and a second transport driven roller
Transport means, the first transport means transports the paper, the positioning member positions the paper, the detecting means stops the paper, the second transport driven roller is pressed against the second transport drive roller, and the second transport driven roller is pressed against the second transport drive roller. (2) A sheet conveying device that performs orthogonal conveyance by driving and rotating a conveyance driving roller to convey the sheet to the second conveyance path, and a glue discharging device disposed downstream of the second conveyance path to form a sheet to be conveyed. A glue binding apparatus comprising: a glue application device that forms a linear glue application section near a side edge; and a unit that aligns and presses a sheet after applying the glue to produce a booklet.

(6) An image forming apparatus main body comprising an image writing means, an image forming means, and a sheet conveying device, and a glue coating process performed on a sheet discharged from the image forming apparatus main body. An image forming apparatus comprising: the paper transport device according to any one of the preceding claims, and the glue binding device according to the above (5).

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a paper conveying apparatus, a glue binding apparatus, and an image forming apparatus equipped with a glue binding apparatus according to the present invention will be described with reference to the drawings.

(One Embodiment of Image Forming Apparatus) FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus main body A, an image reading apparatus B, and a glue binding apparatus C.

The main body A of the image forming apparatus includes a charging unit 2, an image exposure unit (writing unit) 3, a developing unit 4, and a transfer unit 5 around a rotating image carrier (hereinafter, referred to as a photosensitive member) 1.
A, the charge removing means 5B, the separating claw 5C, and the cleaning means 6 are arranged, and the surface of the photoreceptor 1 is uniformly charged by the charging means 2 and thereafter, the image read from the original by the laser beam of the image exposing means 3 A latent image is formed by performing laser beam scanning based on the data, and the latent image is reversely developed by the developing unit 4 to form a toner image on the surface of the photoconductor 1.

On the other hand, the transfer paper (hereinafter referred to as paper) S fed from the paper storage means 7A is sent to the transfer position.
At the transfer position, the toner image is transferred onto the sheet S by the transfer unit 5A. After that, the paper S is discharged by the discharging means 5B.
As a result, the charge on the back surface is erased, separated from the photoreceptor 1 by the separation claw 5C, conveyed by the intermediate conveyance unit 7B, subsequently heated and fixed by the fixing unit 8, and discharged by the paper discharge roller 7C.

When forming images on both sides of the sheet S,
The sheet S, which has been heated and fixed by the fixing unit 8, is branched from a normal sheet discharge path by a transfer path switching plate 7D, is switched back in a reverse transfer 7E, is turned over, and is discharged outside the apparatus by a sheet discharge roller 7C. You. Discharge roller 7C
Received from the receiving unit 1 of the glue binding apparatus C
It is sent to 1.

On the other hand, the developer remaining on the surface of the photoreceptor 1 after the image processing is removed by the cleaning means 6 downstream of the separation claw 5C, and the surface is prepared for the next image formation.

An image reading apparatus B provided with an automatic document feeder of a sheet-through type reading system is installed above the image forming apparatus main body A.

[0028] The glue binding apparatus C is provided with the uppermost sheet discharging means 1.
0, horizontal conveying means 20 below, direction changing conveying means 3
0, a paper transport device including a stacking device 40, a discharging device 50, a paper discharging device 60, and a cover sheet feeding device 70, and a glue discharging device 8.
0, a glue application device including a glue supply device 90.

FIG. 2 is a front sectional view of the glue binding apparatus C. The sheet S introduced into the receiving unit 11 is
Is selected as one of the upper sheet discharging means 10 and the horizontal conveying means 20.

(Discharge directly to the fixed discharge tray 16 at the top of the apparatus)
The paper S introduced into the paper discharging means 10 is transported upward,
The sheet is nipped by the conveying rollers 13 and 14 and is discharged onto the fixed sheet discharge tray 16 by the discharge roller 15.

(Shift processing or non-sorted large-volume discharge, discharge to elevating discharge tray 63) When this transport mode is set,
The switching plate 12 closes the transport path of the sheet discharging means 10 and opens the transport path of the horizontal transport means 20 to allow the paper S to pass.

The paper S introduced into the horizontal transport means 20 is
The sheet S, which is nipped and conveyed by the conveying rollers 21, 22, 23, and 24 and is not subjected to the glue coating process, is nipped by a discharge roller 61 via a shift means (not shown), and is lifted and lowered outside the apparatus from a first discharge port 62. The paper is discharged onto the paper discharge tray 63. On the elevating sheet discharge tray 63, for example, a maximum of 3000 sheets S can be stacked.

FIG. 3 is a side view of the glue binding apparatus C, and FIG. 4 is a plan view. 5 and 6
FIG. 4 is a schematic perspective view for explaining a paper transport path and a glue application process during the glue application process.

When the mode is set to the glue binding process, the sheet S discharged from the main body A of the image forming apparatus is transported by the transport roller 21 driven and rotated by the motor M1. -24 to be conveyed. When the leading end of the sheet S comes into contact with the positioning member 25, the bending of the sheet S is corrected, and the sheet S is positioned in the transport direction (the first transport path X in the direction indicated by the arrow in FIGS. 2 and 4 to 6).
1). Thereafter, the driving of the motor M1 is stopped, and the upper rollers of the conveying rollers 21 to 24 are retracted upward from the sheet surface by a driving means (not shown), and the conveying rollers 22 to 2 are stopped.
4 is released.

Further, the sheet S is nipped by the conveying rollers 31 and 32 driven and rotated by the motor M2, and is conveyed in the conveying direction deflected by 90 degrees (the second conveying in the direction of the arrow in FIGS. 3 to 6). Road Y1). The paper S continues to be transported by rollers 33,
The sheet is pinched by U and transported in a U-turn and sent to the stacking means 40 (third transport path Z in the direction of the arrow in FIGS. 3 to 6).

Glue coating process on the paper S The glue discharging device 80 is configured such that the transport rollers 31 to 34 move linearly or linearly on one side edge of the paper S traveling from the second transport path Y1 to the third transport path Z. The glue is discharged in the form of intermittent broken lines to form a glue application portion N on the upper surface of the paper S (see FIG. 5).

The glue used in the embodiment of the present invention is a vinyl acetate adhesive having a viscosity of 750 to 1500 m at room temperature.
Pa · s.

Loading, Alignment, and Pressure Processing of Sheet S The first sheet S that has not been subjected to the glue application processing is nipped and conveyed by conveying rollers 33 and 34 that are driven and rotated, and conveyed to the fourth conveying path Y2 in the Y2 direction. And is placed on the loading table 41. Subsequent second and subsequent sheets S that have been subjected to the glue application processing are nipped and conveyed by conveying rollers 33 and 34 to form a fourth conveying path Y
2 and is stacked on the preceding sheet S on the stacking table 41.

That is, the leading end of the sheet S nipped and transported by the transport rollers 34 is gripped by the gripper means 43 held by the rotating endless belt 42, and moves above the loading table 41 in the fourth transport path Y2. Transported to The pressurizing unit 44 held by the moving gripper unit 43 presses and moves the back side of the surface on which the glue application section N of the preceding sheet bundle placed on the stacking table 41 is moved, thereby bonding the sheets. to be certain. The leading end of the sheet S gripped by the gripper means 43 is connected to the leading end stopper 4.
5 and are aligned. The leading end stopper 45 is movable by a driving unit (not shown), and stops at a predetermined position according to the size setting of the sheet S. The rear end of the paper S
The paper rear end aligning and pressing means 46, which is movably driven, performs alignment of the paper rear end and pressing of the paper rear end upper surface. Both end portions of the sheet S are positioned by the side end stopper 47 and an alignment unit (not shown). The alignment and positioning of the leading end, the trailing end, and both sides of the sheet S are performed before the pressing process by the pressing unit 44. The pressing process of the sheet S by the pressing unit 44 is performed when the second and subsequent sheets S are loaded on the loading table 41.
It may be performed each time it is placed on the top. Alternatively, the pressing process may be performed each time a plurality of sheets S are stacked.

One book bound by the above-described gluing process is completed. In this glue binding apparatus C, for example,
A maximum of 200 sheets S can be glued and bound.

A plurality of discharge belts 53 wound around a driving roller 51 and a driven roller 52 are rotatably arranged on a part of the sheet loading surface of the sheet loading table 41.

The booklet Sa on which the last sheet S is stacked on the stacking table 41, subjected to pressure processing, and glued and bound is discharged from the discharge pawl 53 of the discharge belt 53 rotated by the motor M3.
a, the rear end of the booklet Sa is held, and slides on the mounting surface of the stacking table 41, and is nipped by the discharge roller 64 provided at the second discharge port of the discharge means 60, and lifted and discharged. The sheet is discharged and stacked on the plate 63 (fifth transport path X2 in the direction of the arrow). Prior to the paper discharging process, the pressing means 44 and the side end stopper 4
7 is retracted above the transport path by a driving unit (not shown).

On the elevating sheet discharge tray 63, a sheet S which has been discharged from the first discharge port 62 and has not been coated with glue and a booklet Sa which has been discharged from the second discharge port 65 and have been coated with glue can be stacked. And a large amount of paper S and booklet S
a can be accommodated.

(Glue Discharge Apparatus) FIG. 7 is a sectional view of the glue discharge apparatus 80.

The glue discharging device 80 has an opening 8 for discharging glue.
Nozzle member 81 having 1a, movable needle member (hereinafter referred to as needle) 8 for opening and closing opening 81a
2. Casing 8 that movably accommodates needle 82
3. Solenoid SL that movably drives needle 82
1 and so on.

The return spring 85 is connected to the housing 8 of the glue discharging device 80.
4 and the upper surface of the flange portion 82b, and presses the needle 82 downward. Solenoid S
When L1 is not operated, the return spring 85 causes the needle 82 to move.
Of the nozzle member 81 closes the opening 81a.

When a voltage is applied to the solenoid SL1, the plunger SLa moves upward, the needle 82 directly connected to the plunger SLa is pulled up, and the nozzle member 81
The opening 81a is opened so that the paste can be discharged.

An inlet member 87 is fixed to the side surface of the casing 83, and the glue supplied from the glue supply device 90 described later is introduced into the glue accommodating chamber 83a through the supply pipe 88.

(Paper Transport Mode) FIG. 8 shows the first transport path X
1 is a schematic plan view showing various paper transport modes in a second transport path Y1.

In the first transport path X1 and the second transport path Y1, it is possible to carry out paper transport in three modes: a direct paper discharge mode, a shift mode, and a paper direction conversion mode.

FIG. 8A shows a paper transport process in the direct paper discharge mode. When the direct discharge mode is set, the positioning member 25 is retracted below the first conveyance path X1, and the introduced sheet S is conveyed while being nipped by the conveyance rollers 21 to 24, passes above the positioning member 25, Discharge roller 61
Is discharged outside the machine (see FIG. 2).

FIG. 8B shows the paper transport process in the shift mode. When the shift mode is set, the positioning member 25 is retracted below the first transport path X1, and the introduced sheet S is nipped and transported by the transport rollers 21 to 24,
After a predetermined time has passed since the passage of the leading end of the sheet is detected by a sensor (not shown), the sheet arrives near the positioning member 25 and stops. In this stopped state, the pressure of the transport rollers 21 to 24 is released by the drive of a solenoid (not shown), and then the transport roller 31 is brought into the pressure contact state. Subsequently, the transport roller 31 is driven and rotated for a predetermined time, and shifts and transports the sheet S in the Y0 direction indicated by a white outline arrow in a right angle direction. After the shift conveyance is completed, the pressure contact of the conveyance roller 31 is released, the conveyance rollers 21 to 24 are brought into a pressure contact state, and the conveyance rollers 21 to 24 are driven and rotated to remove the paper S by a white arrow X1.
Conveyed in the direction, and discharged outside the machine.

FIGS. 8C and 8D show a process in which the sheet is conveyed after being converted in a right angle direction in the gluing process. The introduced sheet S is conveyed while being nipped by the conveying rollers 21 to 24, and when the passage of the leading end of the sheet is detected by a sensor (not shown), the sheet conveying speed by the conveying rollers 21 to 24 is reduced, and after a predetermined time elapses. , And stops at a low speed against the positioning member 25. During the paper transport, the pressure contact of the transport roller 31 is released. The leading end of the sheet abutting on the positioning member 25 is bent, and the bending is corrected.

After the stop of the sheet S, only the conveying roller 311B of the conveying rollers 31 which is close to the positioning member 25 is kept in the pressed state, and the pressed state of the conveying rollers 21 to 24 is released. Thereby, the bending (loop) of the leading end of the sheet is eliminated and the sheet becomes flat. Thereafter, the transport rollers 31 and 311 are brought into a pressure contact state, and driven and rotated to transport the sheet S in the Y1 direction and send the sheet S to the glue application processing unit of the glue discharging device 80.

FIG. 9 is a plan view of the first and second transport paths X1 and Y1. FIG. 10 is a plan view of the first and second transport paths X1 and Y1. It is sectional drawing of a contact member vicinity.

Each of the transport rollers 22, 23, and 24
A first drive rotatably supported below the first transport path X1
The transport drive rollers 22A, 23A, and 24A, and the upper first transport driven rollers 22B, 23B, and 24B that are pressed against the first transport drive roller and can be driven to rotate. Each of the transport rollers 22 to 24 has substantially the same configuration.

First transport drive roller 22 of transport roller 22
A is driven and rotated by a motor M0. Transport roller 23
The first transport drive roller 23A and the first transport drive roller 24A of the transport roller 24 are driven and rotated by the motor M1.

First transport driven roller 22 of transport roller 22
B is supported by the release member 22C, oscillated by the solenoid SL11, and pressed and separated from the first transport driving roller 22A. The first transport driven roller 23B of the transport roller 23 is supported by the release member 23C, is swung by the solenoid SL12, and is pressed against and separated from the first transport drive roller 23A. The first transport driven roller 24B of the transport roller 24 is a release member 24.
C, is oscillated by the solenoid SL13, and presses and separates from the first transport drive roller 24A.

The release members 22C to 24C are respectively urged by springs 27, and are driven by the first transport driven rollers 22B, 23C.
B and 24B are pressed against the first transport drive rollers 22A to 24A. The solenoids SL11, SL12, and SL13 swing the release members 22C to 24C about the rotation shaft 27a to separate the first transport driven rollers 22B to 24B from the first transport drive rollers 22A to 24A.

When the sheet S is transported along the first transport path X1, the first transport driven rollers 22B to 24B are released from the driving of the solenoids SL11 to SL13 and are biased by a spring, so that the first transport driving rollers 22A to 22B are driven. Press in contact with 24A.

Prior to the sheet conveyance, the second conveyance driven rollers 311B to 314B are connected to the solenoids SL21 and SL21.
22 is retracted downward from the sheet transport surface by the drive of
It is held in a non-pressing state with the transport driving rollers 311A to 314A.

A positioning member 25 for positioning the leading end of the sheet S conveyed along the first conveying path X1 is movably disposed downstream of the conveying roller 24 in the sheet conveying direction. The leading end of the positioning member 25 forms a V-shaped part that receives the leading end of the sheet S and positions it at a predetermined position. The positioning member 25 is swung by the solenoid SL3, and the tip of the positioning member 25 is moved to the first transport path X1.
When the paper S is positioned on the paper transport surface, the leading end of the paper S is received and positioned.

The paper transport reference surface of the first transport path X1 is opposed to and parallel to the upper guide plate 2 at a predetermined interval.
6A and the lower guide plate 26B.
The distance between the upper guide plate 26A and the lower guide plate 26B is set to, for example, 3 mm.

The peripheral surfaces of the second transport drive rollers 311A to 314A are formed of a slippery resin such as polypropylene, and have a cylindrical surface g and a conical surface h. The cylindrical surface g is the second
It comes into pressure contact with the circumferential surfaces of the transport driven rollers 311B to 314B. The conical surface h is formed at an inclination angle of 10 to 30 degrees with the rotation axis.

When the sheet S is transported along the first transport path X1, the second transport drive rollers 311A to 314 in the non-transport state are not used.
The leading end of the sheet S, which has hit the conical surface h of A, smoothly advances along the conical surface h and is conveyed to the positioning member 25 while being nipped by the conveying rollers 22 to 24, so that poor conveyance is prevented. .

A curved portion is formed on the upper guide plate 26C facing the lowermost guide side of the lower guide plate 26B in the sheet transport direction.
A space having a bulge is formed above the paper transport reference plane. The leading end portion of the sheet S conveyed while being nipped by the conveying rollers 22 to 24 comes into contact with the innermost portion of the V-shaped portion of the positioning member 25 and stops and is positioned. Thereafter, the portion of the paper S that continues to be transported forms an upwardly convex deflection in the curved portion of the upper guide plate 26C, and the transport of the paper S is stopped after the bending is corrected. You.

FIG. 11 is a partial sectional view of the second transport path Y1. After stopping the sheet S and correcting the skew, the solenoid SL2
2 is released, the spring is urged, and the second transport driven rollers 311B to 314B become second transport drive rollers 311A.
To 314A.

The sheet S nipped between the second transport driving rollers 311A to 314A which are driven and rotated by the start of driving rotation of the motor M2 and the second transport driven rollers 311B to 314B.
Is transported along a second transport path Y1 in a direction orthogonal to the first transport path X1.

FIG. 12 shows the first transport drive rollers 22A to 24A and the second transport drive roller 3 in the first transport path X1.
It is the elements on larger scale which show the holding position of 11A-314A.
Hereinafter, the first transport driving roller 23A and the second transport driving roller 313A will be described as representatives.

Sheet S conveyed in first conveyance path X1
Are sandwiched between the conveying rollers 22 to 24, and the upper guide plate 2
6A and the lower guide plate 26B advance in the opposing passage while maintaining the distance d. A indicated by a dashed line is the center line of the center of the interval d.

The nipping position b between the first transport driving roller 22A and the first transport driven roller 22B is set at a distance e below the center line a. The nipping position c between the second transport driving roller 313A and the second transport driven roller 313B is set to a position at a distance f above the center line a. For example, the interval d
Is set to 3 mm, and the distance e and the distance f are set to 0.5 to 1 mm. Therefore, the transport rollers 21 to 21 of the first transport path X1
24, and the nipping position c of the second transport drive roller 313A and the second transport driven roller 313B of the second transport path Y1 are the center line a of the center between the upper guide plate 26A and the lower guide plate 26B. Are arranged upside down.

FIG. 13 shows a state where the first transport driven roller 23B is separated from the first transport driving roller 23A and retracted upward, and a state where the second transport driven roller 313B is separated from the second transport driving roller 313A and retracted downward. It is a partial enlarged view showing a state.

When the sheet S passes through the transport path between the upper guide plate 26A and the lower guide plate 26B in a state where the first transport driven roller 23B is retracted upward, the uppermost portion of the cylindrical surface of the first transport drive roller 23A is formed. (Part that becomes the holding position b)
Is located below the center line a, the leading end of the conveyed sheet S easily passes without being caught on the circumferential surface of the first conveyance drive roller 23A.

When the second transport driven roller 313B is retracted downward, the sheet S is moved to the upper guide plate 26A,
When passing through the transport path between the lower guide plates 26B, the lowermost portion (the portion at the holding position c) and the conical surface h of the cylindrical surface g of the second transport drive roller 313A are located above the center line a. The leading end of the conveyed sheet S easily passes without being caught on the cylindrical surface g and the conical surface h of the second conveyance drive roller 313A.

The glue binding apparatus C of the present invention is connected to an image forming apparatus such as a copying machine, a printer, or a multifunction machine of these. Desired digital processing is performed by the image forming apparatus,
After processing such as single-sided recording, double-sided recording, and page editing, the discharged sheet is subjected to accurate and efficient cover-covering and gluing processing by an image forming apparatus equipped with the glue-binding apparatus C of the present invention. Is done.

It is also possible to form the glue binding apparatus C of the present invention as an independent apparatus and glue and bind a sheet processed by another image forming apparatus.

[0077]

As is clear from the above description, the following effects can be obtained by the glue binding method, glue binding apparatus, and image forming apparatus of the present invention.

(1) According to the paper transport apparatus according to the first and second aspects of the present invention, the paper transport during the shift processing and the paper perpendicular transport during the post-processing such as the gluing mode can be performed by a common transport unit. , The configuration of the paper transport device is simplified, the size of the device is reduced, and the productivity of paper transport is improved.

(2) According to the sheet transport device of the third aspect of the present invention, the sheet is placed at an accurate predetermined position by securely abutting the leading end of the sheet against the positioning member.
The movement and skew of the sheet during the right-angle conveyance are corrected, and the sheet post-processing such as the gluing process is performed at an accurate position.

(3) According to the paper transport apparatus of the fourth aspect of the present invention, when the paper is transported straight, the leading edge of the paper abuts on the non-driven transport roller of the orthogonal paper transport means, and the paper transport failure occurs. Is prevented from occurring, and
The paper is guided in the transport direction, and excellent paper transport is possible.

(4) According to the paper transport apparatus of the fifth aspect of the present invention, during the straight transport and the right-angle transport of the paper, the leading end of the paper hits the transport roller that is not drivingly rotated and is caught. As a result, it is possible to prevent the sheet conveyance failure from occurring, and to stably carry the sheet.

(5) By the glue binding apparatus according to the sixth aspect of the present invention, a precise linear glue application section is formed in parallel with the side edge portion of the paper conveyed at a right angle, and the finished quality is improved. A good booklet is produced.

(6) With the image forming apparatus according to the seventh aspect of the present invention, stable glue binding processing is performed on a large number of sheets continuously discharged at a high speed from the image forming apparatus main body. Many booklets can be produced stably.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus main body, an image reading device, and a glue binding device.

FIG. 2 is a front sectional view of the glue binding apparatus.

FIG. 3 is a side view of the glue binding apparatus.

FIG. 4 is a plan view of the glue binding apparatus.

FIG. 5 is a schematic perspective view illustrating a paper transport path and a glue application process during the glue application process.

FIG. 6 is a schematic perspective view illustrating a paper transport path and a glue application process during the glue application process.

FIG. 7 is a sectional view of the glue discharging means.

FIG. 8 is a schematic plan view showing various paper transport modes in a first transport path and a second transport path.

FIG. 9 is a plan view of a first transport path and a second transport path.

FIG. 10 is a cross-sectional view of the vicinity of an abutting member of a first conveyance path.

FIG. 11 is a partial cross-sectional view of a second conveyance path.

FIG. 12 illustrates a first conveyance drive roller in a first conveyance path,
FIG. 5 is a partially enlarged view showing a nipping position of a second transport driving roller.

FIG. 13 is a partially enlarged view showing a state in which a first transport driven roller is retracted upward and a second transport driven roller is retracted downward.

[Explanation of symbols]

Reference Signs List 20 horizontal transport means 21, 22, 23, 24 transport rollers 22A, 23A, 24A first transport drive rollers 22B, 23B, 24B first transport driven rollers 25 positioning member 26A upper guide plate 26B lower guide plate 26C upper guide plate 30 direction Conversion / conveyance means 31, 32, 33, 34 Conveyance rollers 311A, 312A, 313A, 314A Second conveyance drive rollers 311B, 312B, 313B, 314B Second conveyance driven rollers 40 Loading means 50 Ejection means 60 Discharge means 80 Glue ejection device 90 Glue supply device A Image forming device main body C Glue binding device M0, M1, M2, M3 Motor N Glue coating unit S Transfer paper (paper) Sa Booklet SL1, SL11, SL12, SL13, SL21, S
L22, SL3 Solenoid X1 First transport path Y1 Second transport path

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsunori Takahashi 2970, Ishikawa-cho, Hachioji-shi, Tokyo Konica Corporation (72) Inventor Toshitaka Matsumoto 3-51-4 Kanamecho, Toshima-ku, Tokyo F-term (reference ) 3F102 AA06 AA10 AA11 BA02 BA06 BA09 BB02 BB04 CA00 CB01 FA08 3F108 GA02 GA03 GA04 GB01 HA13

Claims (7)

[Claims] A first conveying unit configured to receive a sheet to be conveyed, sandwich the sheet, and convey the sheet, and a first conveyance driving roller and a first conveyance driven roller; A positioning member for abutting the leading end, a second transport drive roller for nipping and transporting the sheet in a second transport path in a direction orthogonal to the first transport path of the first transport means, and a second transport drive roller;
A second paper transporting means comprising a transport driven roller, and a direct paper discharge mode for discharging paper out of the apparatus by the first paper transporting means, and after stopping the rotation of the first paper transport driving roller, The first transport driven roller is separated from the first transport drive roller, the second transport driven roller is pressed against the second transport drive roller, and the second transport drive roller is driven and rotated to form the second transport path. After the paper is shifted by a predetermined amount and stopped, the second transport driven roller is moved to the second
When the sheet is separated from the transport drive roller, the first transport driven roller is pressed against the first transport drive roller, the transport drive roller is driven to rotate, and the sheet is discharged out of the apparatus through the first transport path. In a shift mode, after positioning the positioning member by protruding above the sheet passing surface of the first conveyance path and abutting the leading end of the sheet, the second conveyance driven roller is pressed against the second conveyance drive roller, and the second conveyance driving roller is pressed. 2. A paper transport device, comprising: a paper transport direction changing mode for transporting paper to the second transport path by driving and rotating a two transport driving roller. 2. A positioning device according to claim 1, wherein said positioning member is located on a downstream side of said first conveyance path in a sheet conveyance direction and is capable of abutting on a leading end of a sheet, and a second position retracting from said first conveyance path. And in the direct sheet ejection mode, waits at the first position, in the shift mode, retracts at the second position, and in the paper direction change mode, waits at the first position. The sheet is conveyed to a second conveyance path in a direction orthogonal to the first conveyance path after the leading end of the paper conveyed by the conveyance means is brought into contact with the paper to correct the sheet bending and positioned. Item 2. The paper transport device according to Item 1. 3. A first transporting means comprising a first transport drive roller and a first transport driven roller for receiving a transported paper, transporting the paper while nipping and transporting the transported paper, and transporting the paper transported by the first transporter. A positioning member for abutting the leading end, detecting means provided near the positioning member for detecting the leading end of the sheet conveyed by the first conveying means, and second conveying in a direction orthogonal to the first conveying path. A second conveyance unit including a second conveyance driving roller and a second conveyance driven roller for nipping and conveying the sheet on the path; a control unit for controlling each driving unit of the first conveyance unit and the second conveyance unit; Composed of
The control means abuts the leading end of the sheet on the positioning member after detecting the passage of the leading end of the sheet by the detecting means, and after a lapse of a predetermined time, stops the driving rotation of the first transport drive roller to thereby stop the leading end of the sheet. After the bending is formed, the second transport driven roller located near the leading edge of the sheet is pressed against the second transport driving roller to pinch the leading edge of the sheet,
Thereafter, the first transport driven roller is separated from the pressure contact position of the first transport drive roller to release the bending of the leading end of the sheet,
The second transport driven roller located at a position other than the vicinity of the leading end of the sheet is pressed against the second transport driving roller, and after the pressing operation, the second transport driving roller is driven to rotate.
A sheet transport device for transporting a sheet while nipping the sheet in a transport path. 4. A first transport means comprising a first transport drive roller and a first transport driven roller for receiving the transported paper, transporting the paper while nipping and transporting the paper, and transporting the paper transported by the first transport means. A positioning member for abutting the leading end, detecting means provided near the positioning member for detecting the leading end of the sheet conveyed by the first conveying means, and second conveying in a direction orthogonal to the first conveying path. A second transport drive roller that transports the paper while nipping the paper in the path, and a second transport unit that includes a second transport driven roller, wherein the second transport drive roller is in a paper entry direction by the first transport unit. A sheet conveying device, wherein a conical surface is formed on a side of the sheet, and a leading end of the sheet is conveyed by the first conveying means along the conical surface. 5. A first transport unit comprising a first transport drive roller and a first transport driven roller for receiving a transported sheet, nipping and transporting the sheet, and a first transport unit for transporting the paper transported by the first transport unit. A positioning member for abutting the leading end, detecting means provided near the positioning member for detecting the leading end of the sheet conveyed by the first conveying means, and second conveying in a direction orthogonal to the first conveying path. A second conveyance unit including a second conveyance driving roller and a second conveyance driven roller for nipping and conveying the sheet on the path, and a pair of guide plates disposed opposite to each other with a predetermined gap to guide the conveyed sheet; And a first transport drive roller of the first transport unit and a first transport drive roller.
The pressure contact position of the transport driven roller and the second position of the second transport unit.
The pressing position of the transport drive roller and the second transport driven roller is
A sheet conveying device, wherein the sheet conveying device is disposed at a position opposite to a center of a sheet conveying reference plane between the guide plates and opposed to the center. 6. A first transport unit comprising a first transport drive roller and a first transport driven roller for receiving a transported paper, nipping and transporting the paper, and a first transport unit for transporting the paper transported by the first transport unit. A positioning member for abutting the leading end, a detecting unit for detecting a leading end of the sheet conveyed by the first conveying unit, and a sheet conveyed to the second conveying path in a direction orthogonal to the first conveying path of the first conveying unit. And a second transport unit including a second transport drive roller and a second transport driven roller for nipping and transporting the sheet, and transporting the sheet by the first transport unit.
The positioning of the sheet by the positioning member, the stop of the sheet by the detecting means, the second conveyance driven roller is pressed against the second conveyance drive roller, and the second conveyance drive roller is driven to rotate, and the sheet is fed to the second conveyance path. A glue applying device that forms a linear glue applying section near the side edge of the paper to be transported by a paper transport device that performs orthogonal transport to be transported and a glue discharging device disposed downstream of the second transport path. And means for aligning and applying pressure to the paper after glue application to produce a booklet. 7. An image forming apparatus main body including an image writing unit, an image forming unit, and a sheet conveying device, and performing a glue coating process on a sheet discharged from the image forming apparatus main body. An image forming apparatus comprising: the sheet conveying device according to claim 7; and the glue binding device according to claim 6.